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	<dc:title xml:lang="en-US">PENGARUH FREKUENSI PEMBERIAN PAKAN PADA PENDEDERAN KE DUA IKAN LELE DUMBO YANG DIPELIHARA DI KOLAM TANAH</dc:title>
	<dc:creator>Sundari, Sri</dc:creator>
	<dc:creator>Nugroho, Estu</dc:creator>
	<dc:creator>Subagja, Jojo</dc:creator>
	<dc:description xml:lang="en-US">Effect of Feed Frequency on Second Rearing Larvae of Catfish Culture in Earthen Pond. Â Â Â Â Â Â Â Â Â  Breeding is an important part in business scale of catfish. The critical time of catfish culture is in second rearing of larvae (from 2-3 cm to 8-10 cm) due to their canibalism. The successibility of seed rearing is depend on continuesly feed reservation, including feed management. The objective of this research was to get information about feed frequency given to seed reared in earthen pond. Research was conducted using farmerâ€™s earthen pond in Pabuaran, Kemang Bogor district. Cat fish seed originated from farmer located in Bogor, with size of 2-3 cm per each and stocking density of 100 fish/m2.Â  Treatments were feed frequency i.e. 2x; 4x and 6x in a day or night. Observed parameter were survivalÂ  and growth rate, including water quality. Block Randomized Design of Experiment were used with two replications. Samping was conducted every 7 days. Result showed that there was statistically significant differences (P&amp;lt;0.05) among treatment in survival rate, while no statistically differences in growth rate of seeds length and weight. Feed frequency 2x at night gived the best result of survival rate and percentage of â€filter selectionâ€ was up to 80% and 37.76% respectivelly.Keywords : Feed frequency, second rearing, catfishÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Salah satu skala bisnis ikan lele yang penting adalah pembenihan. Pada pembenihan lele, masa kritis salah satunya ditemui pada tahapan pendederan kedua (dari ukuran 2-3 cm ke 8-10 cm). Keberhasilan pendederan iniÂ  sangat tergantung pada kesediaan pakan yang kontinu, sehingga dapat menekan kanibalisme yang ada. Tujuan penelitian ini yaitu untuk mendapatkan informasi frekuensi pakan yang diberikan dengan tepat pada Â pendederan ikan lele yang dipelihara di kolam tanah. Penelitian ini dilaksanakan di kolam tanah di daerah pabuaran, Kemang, Bogor. Ikan uji yang digunakan adalah benih ikan lele ukuran Â± 2-3 cm/ekor, dengan kepadatan 100 ekor/m2. Perlakuan yang diamati adalah frekuensi pemberian pakan, yaitu i) 2x, ii) 4x dan iii) 6x, baik dilakukan pada siang maupun malam hari. Secara garis besarÂ  parameter yang diamati dalam penelitian ini meliputi pertumbuhan, dan kelangsungan hidup serta sifat fisika dan kimia air. Rancangan percobaan yang digunakan adalah rancangan acak blok yaitu berupa waktu siang dan malamÂ  dengan 2 ulangan waktu. Sampling dilakukan 7 hari sekali. Hasil yang diperoleh menunjukkan adanya perbedaan yang nyata (P&amp;lt;0,05) dari perlakuan terhadap sintasan benih, namun tidak berbeda nyata pada laju pertumbuhan harian berat dan panjang benih. Pemberian pakan dengan frekuensi 2x pada malam hari memberikan pengaruh yang terbaik dengan sintasan mencapai 80%, dengan persentase lolos saring mencapai 37.76%.Kata kunci : frekuensi pakan, pendederan 2, ikan lele</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
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	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/5</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.5</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 1-7</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/5/4</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Sri Sundari, Estu Nugroho, Jojo Subagja</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/6</identifier>
				<datestamp>2023-11-29T01:26:59Z</datestamp>
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	<dc:title xml:lang="en-US">EVALUASI PERTUMBUHAN LIMA STRAIN IKAN NILA PADA MEDIA BERSALINITAS</dc:title>
	<dc:creator>Ath-thar, M. H. Fariduddin</dc:creator>
	<dc:creator>Ariyanto, Dadang</dc:creator>
	<dc:creator>Gustiano, Rudhy</dc:creator>
	<dc:description xml:lang="en-US">Evaluation of Salinity Tolerance on Five Strains of Nile Tilapia (Oreochromis niloticus).Â Â Â Â Â Â Â Â  The objective of the study was to evaluate the salinity tolerance of five strains of nile tilapia, BEST (Bogor Enhanced Strain Tilapia), Lokal Kuningan (LK), Red NIFI (RN), nila merah (NM) dan nila hitam (NH),Â  in 15 ppt saline water. Initial size of fish examined was 3-5 cm, reared in 100 x 40 x 60 cm aquaria with density of 25 fish per aquarium. Each strain had 4 replications. During experiment fish were fed with commercial pellet, 5% of body weigth per day. Observation was done on standard length,Â  body weight, biomass, and survival rate every 10 days for 1 month. Growth of length and body weight showed no differences among strains. For biomass,Â  BEST strain except with RN was significantly different (P&amp;lt;0.01) compare to NH, NM and LK. On the other hand, RN was not significantly different with NH, but significantly different with LK and NM.Â  For survival rate, BEST strain had the highest percentage among others and significantly different than LK, NM and NH. RN was also significantly different than LK, NM, and NH. The last three strains were not significant different among them.Keywords : Strain, oreochromis, salinity, growthÂ ABSTRAKÂ Â Â Â Â Â Â  Banyaknya lahan tambak yang tidak dioperasikan lagi (idle) merupakan lahan tidur yang perlu dioptimalkan Penelitian yang dilakukan bertujuan untuk melakukan evaluasi pertumbuhan benih ikan nila strain BEST (Bogor Enhanced Strain Tilapia), lokal Kuningan, Red NIFI, nila merah dan nila hitam di masyarakat pada media bersalinitas 15 ppt. Ikan uji yang digunakan berukuran 3-5 cm dipelihara dalam akuarium ukuran 100 x 40 x 60 cm dengan kepadatan 25 ekor menggunakan 4 ulangan untuk masing-masing strain. Selama pemeliharaan, ikan diberi pakan komersial (pellet) sebanyak 5% per hari dari bobot tubuh.Â  Pengamatan panjang baku, bobot tubuh, biomasa dan sintasan dilakukan setiap 10 hari sekali selama masa pemeliharaan. Pengamatan pertumbuhan panjang dan bobot tubuh memperlihatkan bahwa kelima strain yang diuji tidak memperlihatkan adanya perbedaan pertumbuhan panjang dan bobot. Untuk biomassa, BEST memberikan hasil yang terbaik dan berbeda nyata dengan NH, NM dan LK namun tidak berbeda nyata dengan RN. Sedangkan RN tidak berbeda nyata dengan NH (P &amp;lt; 0,01) tetapi berbeda nyata dengan LK dan NM. Untuk pengamatan sintasan, ikan nila BEST mempunyai nilai yang terbaik dan berbeda sangat nyata (P&amp;lt;0,01) dibandingkan dengan LK, NM dan NH tetapi tidak berbeda nyata dengan RN. Demikian pula untuk RN yang berbeda nyata dengan LK, NM dan NH. Sedangkan untuk ketiga strain lainnya (LK, NM dan NH) tidak memberikan perbedaan nyata satu sama lain.Â Kata kunci : Strain, oreochromis, salinitas, pertumbuhan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/6</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.6</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 8-12</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/6/5</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 M. H. Fariduddin Ath-thar, Dadang Ariyanto, Rudhy Gustiano</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/7</identifier>
				<datestamp>2023-11-29T01:26:59Z</datestamp>
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	<dc:title xml:lang="en-US">LIMBAH BIOGAS KOTORAN AYAM SEBAGAI ALTERNATIF SUMBER PROTEIN PAKAN BENIH IKAN PATIN (Pangasianodon hypophthalmus)</dc:title>
	<dc:creator>Huwoyon, Gleni Hasan</dc:creator>
	<dc:creator>Hariati, Anik Martinah</dc:creator>
	<dc:creator>Gustiano, Rudhy</dc:creator>
	<dc:description xml:lang="en-US">Chicken Manure Biogas Waste as Protein Source for Patin FryF.Â Â Â Â Â Â Â Â  The hight ofÂ  production cost encourage to search forÂ  alternative low price feed. The objectives of the study was to know an appropriate substitution by chicken manure biogas protein for soybean meal protein, and the influence on growth performance and feed efficiency of siames catfish (Pangasianodon hypophthalmus). The treatments of chicken manure biogas proteinÂ  consisted of control (A = 0 %) and four treatment (B = 8 %, C = 16%, D = 24 % dan E = 32 %). The results showed that best chicken manure biogas protein was found in treatments C (16 %), with survival rate of 100 %, specific growth rate (3,4% bw/day), feed conversion ratio (1,0), retention of energy (30,3 %), protein efficiency ratio (3,6 g/g) and 47,8 % of protein retention. Conclusion showed that the chicken manure biogas protein could be used to substitute for soybean meal with the best result in treatment of feed C = 16 %.Keywords : biogas waste, chicken manure, feed, siames catfish, pangasianodon hypophthalmusABSTRAKÂ Â Â Â Â Â Â Â  Tingginya biaya produksi yang menyebabkan mencari alternatif agar pakan murah. Penelitian ini bertujuan untuk mencari substitusi yang tepat antara protein limbah biogas kotoran ayam terhadap protein bungkil kedelai, serta pengaruhnya terhadap pertumbuhan dan perbandingan efisiensi pakan benih ikan patin (Pangasianodon hypophthalmus). Perlakuan pakan substitusi protein limbah biogas kotoran ayam terhadap protein bungkil kedelai terdiri atas kontrol (A = 0%) dan 4 perlakuan (B = 8 %, C = 16%, D = 24 % dan E = 32%). Hasil penelitian menunjukan bahwa substitusi terbaik pada protein limbah biogas kotoran ayam terhadap protein bungkil kedelai didapatkan pada perlakuan pakan C = 16 %, dengan nilai sintasan 100 %, laju pertumbuhan spesifik 3,4 % bt/hari, rasio konversi pakan 1,0, retensi energi 30,3 %, rasio efisiensi protein 3,6 g/g dan retensi protein 47,8 %. Dari data dapat ditarik kesimpulan bahwa limbah biogas kotoran ayam dapat dimanfaatkan sebagai substitusi bungkil kedelai dengan hasil terbaik pada perlakuan pakan C = 16 %.Kata kunci : limbah biogas, kotoran ayam, pakan, patin, pangasianodon hypophthalmus</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/7</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.7</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 13-20</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/7/6</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Gleni Hasan Huwoyon, Anik Martinah Hariati, Rudhy Gustiano</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/8</identifier>
				<datestamp>2023-11-29T01:26:59Z</datestamp>
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	<dc:title xml:lang="en-US">ANALISIS KERAGAMAN GENETIK TIGA STRAIN NILA MERAH (Oreochromis sp) DENGAN ANOVA RAPD</dc:title>
	<dc:creator>Iskandariah, Iskandariah</dc:creator>
	<dc:creator>Arifin, Otong Zenal</dc:creator>
	<dc:creator>Gustiano, Rudhy</dc:creator>
	<dc:description xml:lang="en-US">Analysis Genetic Variation of Three Strains of Red Tilapia by Anova of RAPD.Â Â Â Â Â Â Â Â Â  Study on the genetic variance of three strains of red tilapia (Oreochromis sp) had been conducted in the Biology Molecular Laboratory, Research Institute for Freshwater Aquaculture (RIFA) Bogor.Â  Three different strains, Red NIFI from Thailand,Â  Red Tilapia from Lido lake and Red Tilapia from Bogorâ€™s farmer were analyzed in the study.Â  Observation used Random Amplified Polymorphism DNA (RAPD) with OPA-03, OPA-04, OPC 14 and OPC-15 primers.Â  The results showed that only OPA-03 primer was able to amplify numerous samples.Â  Further analysis showed that the percentage of polimorphic range was between 16.67 â€“ 38.89%, heterozygosity value 0.0378 â€“ 0.1536 and genetic distance among strain 0.3051 â€“ 0.6037.Keywords : RAPD, genetic, strain, nile tilapia, oreochromisÂ ABSTRAKÂ Â Â Â Â Â Â Â Â Â  Penelitian mengenai variasi genetik tiga strain nila merah dari 3 lokasi yang berbeda telah dilakukan di Laboratorium Molekuler Biologi, Balai Riset Perikanan Budidaya Air Tawar (BRPBAT) Bogor.Â  Strain yang diamati meliputi jenis nila Red NIFI dari Thailand, nila merah dari Danau Lido dan nila merah dari Petani Bogor. Penelitian menggunakan metode analisis Random Amplified Polymorphism DNA (RAPD), dengan menggunakan primer OPA-03, OPA-04, OPC-14 dan OPC-15.Â  Hasil pengamatan menunjukkan hanya OPA-03 yang dapat menghasilkan amplifikasi dalam jumlah sampel yang memadai.Â  Hasil analisis menunjukkan bahwa persentase polimorfik berkisar antara 20.00-40.00%, dengan nilai heterozigositas 0.0604â€“0.1516 dan jarak genetik antar strain 0.1770-0.4865.Â Â Kata kunci : RAPD, genetik, strain, ikan nila, oreochromis</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/8</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.8</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 21-25</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/8/7</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Iskandariah Iskandariah, Otong Zenal Arifin, Rudhy Gustiano</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/9</identifier>
				<datestamp>2023-11-29T01:26:59Z</datestamp>
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	<dc:title xml:lang="en-US">METODE ALTERNATIF ANALISIS SULFUR DALAM SOLAR DENGAN ALAT ICP-OES OPTIMA 5300 PERKIN ELMER</dc:title>
	<dc:creator>Taufiq, Agus</dc:creator>
	<dc:creator>Hutagaol, Ricson P.</dc:creator>
	<dc:creator>Pramono, Ujang</dc:creator>
	<dc:description xml:lang="en-US">Alternative Method for Sulphur Analyse in Diesel Fuel Using ICP-OES Device.Â Â Â Â Â Â Â Â  Advancement of atomic emission spectroscopy with come together source of new excitation created analysis technic as Inductively Coupled Plasma (ICP). Its analysis technic is constitute the simultaneous analysis technic by mean of higher accurate and sensitivity level. Whereas predominance of this technic therefore necessary conducted research for determination amount of sulfur in diesel fuel by ICPâ€™s tchnic in order that can used to alternative method.Â  Modify of Inductively Coupled Plasma Optical Emission Spectrometry (ICP â€“ OES) Perkin Elmer Optima 5300 had done to get reliable and acceptable result.Â  Conclusion of result of the research from this alternative method that the best optimum wavelength used for this technic was 180.669 nm with accuration = 100.7 %, precission 0.78 %, linearity = 0.99968588, LoD = 0.00112, LoQ = 0.0316. Sample analysis result of diesel fuel using wave length (Î») 180.669 nm gave very good validation value, where Â % CV less ofÂ  2/3 % Horwitz. The recovery result of the sample got Â very good value, that was 99.1233 %, ThisÂ  showed that ICP â€“ OES 5300 Perkin Elmer device could be used as alternative method for sulphur content analysis in diesel fuel.Keywords : Sulphur, ICP â€“ OES, validationÂ AbstrakÂ Â Â Â Â Â Â  Kemajuan pada spektroskopi emisi atom dengan ditemukannya sumber eksitasi baru melahirkan teknik analisis secara Inductively Coupled Plasma (ICP). Analisis dengan teknik ini merupakan analisis secara simultan dengan tingkat ketelitian dan sensitifitas yang tinggi.Mengingat keunggulan teknik analisis ini perlu diadakan penelitian penentuan kandungan sulfur dalam solar dengan teknik ini, agar dapat digunakan sebagai metode alternatif. Pada penelitian ini dilakukan modifikasi metode pada alat Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) Perkin Elmer Optima 5300 agar diperoleh data yangÂ  bisa dipercaya dan diterima. Hasil penelitian dari metode alternatif ini memberikan kesimpulan bahwa panjang gelombang optimum (l) yang paling baik diguanakan untuk metode alternatifÂ  ini adalah pada 180.669 nm dengan akurasi = 100.7 %, Presisi = 0.78 %, Linieritas (R2) =Â  0.99968588, LoD = 0.00112, LoQ = 0.0316. Hasil analisis contoh solar menggunakan panjang gelombang (l) 180.669 nm memberikan nilai validasi yang sangat baik, dimana % CV lebih kecil dari 2/3 % Horwitz juga hasil analisis recovery (perolehan kembali) dari contoh menghasilkan nilai yang sangat baik yaitu 99.1233 %, hal ini menunjukan bahwa alat ICP â€“ OES 5300 Perkin Elmer bisa digunakan untuk analisis kandungan sulfur dalam solar menggunakan metode alternatif ini.Kata kunci : Sulfur, ICP â€“ OES, validasi</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/9</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.9</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 26-32</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/9/8</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Agus Taufiq, Ricson P. Hutagaol, Ujang Pramono</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/10</identifier>
				<datestamp>2023-11-29T01:26:59Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">KAJIAN BANYAKNYA PUPUK KANDANG TERHADAP PERKEMBANGAN DAPHNIA (Daphnia sp.) DI RUMAH KACA</dc:title>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:creator>Setyawan, Teddy</dc:creator>
	<dc:description xml:lang="en-US">Study On The Effect Of Chicken Manure On Daphnia Developmnt In A Greenhouse.Â Â Â Â Â Â Â Â Â Â  Daphnia is a zooplankton that used as a natural food for fishes, having complete nutrient, easily digested by fishes because Daphnia having thin skin. Besides, natural food generally doesnâ€™ make lower water-media quality and make more desease resistance of fishes.Â  Study methode was having 8 treatments that wereÂ  0,1,2,3,4,5,6,and 7 g/l of dry chicken manure that immersed in each 30 l aquarium in 3 replicats, placed in a green house. Average of 225 Daphnias were stocked in each aquarium.Â  Statistical experimental design of the study was the Completely Random Design (CRD).Study results showed that mximum number of Daphnia after 6 days was at chicken manure of 3 g/l that was 344,000 Daphnias/30l aquarium. Average water-media temperature in 6 days was 33oC , and water pH was 6.45. There was negative correlation significntly between Daphnia development and pH, but no correlation that one with temperature.Keywords : Daphnia, manure, pH, temperature, and green houseÂ AbstrakÂ Â Â Â Â Â Â Â  Daphnia adalah zooplankton yang digunakan sebagai pakan alami ikan, yang mempunyai kandungan gizi yang lengkap, mudah dicerna dalam saluran pencernaan karena isinya padat dan mempunyai dinding yang tipis, selain itu tidak menyebabkan penurunan kualitas air media, dan dapat meningkatkan daya tahan benih ikan terhadap penyakit. Metoda yang digunakan yaitu dengan mencoba 8 perlakuan 0,1, 2, 3, 4, 5, 6, 7, g/l pupuk kandang kotoran ayam kering yang diaplikasikan dalam akuarium volume 30 l dengan 3 ulangan dalam rumah kaca. Jumlah DaphniaÂ  ditebar, sebanyak 225 ekor per akuarium. Rancangan statistik yang dilakukan adalah dengan Rancangan acak lengkap (RAL). Hasil penelitian menyatakan bahwa jumlah Daphnia tertinggi padaÂ  hari keenam adalah pada konsentrasi pupuk 3 g/l Â yaitu 344.000 ekor. Kualitas air selama penelitian adalah rata-rata suhu air 33 Â°C dan rata-rata pH 6,45 serta kualitas air ini merupakan kondisi optimum untuk pertumbuhan Daphnia di rumah kaca.Â  Ada korelasi negatif (berlawanan) secara nyata antara rata-rata perkembangan Daphnia dengan Â pH, tetapi tidak ada korelasi antara perkembangan Daphnia dengan suhu air.Kata kunci : Daphnia, konsentrasi pupuk , pH, suhu air, rumah kaca</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/10</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.10</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 33-39</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/10/9</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Supriyono Eko Wardoyo, Lilis Sugiarti, Teddy Setyawan</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/11</identifier>
				<datestamp>2023-11-29T01:26:59Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">UJI ANTIOKSIDAN EKSTRAK  HEKSANA, ETIL ASETAT, ETANOL, METANOL 80% DAN AIR DAUN KELOR (Moringa oleifera, Lamk)</dc:title>
	<dc:creator>Kiswandono, Agung Abadi</dc:creator>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:description xml:lang="en-US">Antioxidant Test of Â Hexane, Etil Asetat, Ethanol, Methanol 80% andÂ Â  Water Extract in Moringa oleiferaÂ Â Â Â Â Â Â Â Â Â  Antioxidant is a substance that can protect a materials from its destruction. Sources of antioxidant could be from plants. Alkaloid compounds in the Moringa oleifera leaves haveÂ  potentialÂ  antioxidant source. This research aimed Â to examine antioxidant potential from Moringa oleifera leaves extract of hexane, ethyl acetate, methanol 80% and water .Â Â  The extraction methodes was meseration, and antioxidant test used the DPPH free radical scavenging effect. TheÂ  result showed that extract ethanol had the best potential antioxidant with the value of 118.19 Âµg/mL and R2 was 99.9%, from hexanes was 692.39 Âµg/mL (R2=99.9%), in ethyl acetate was 247.5 Âµg/mL (R2=99.9%), in methanol 80% wasÂ  121.79 Âµg/mL (R2= 0.998) and in water extract 189.21 Âµg/mL (R2=99.8%). Antioxidant standart as kuersetin that gave value of 15.84 Âµg/mL (R2 = 99.9%).Keywords : Bioactives compound, moringa oleifera, Â antioxidantÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Antioksidan merupakan substansi yang dapat mencegah atau memperlambat kerusakan suatu zat. Sumber antioksidan dapat diperoleh dari suatu tumbuhan. Senyawa alkaloid yang terdapat pada daun kelor berpotensi sebagai sumber antioksidan. Penelitian ini Â bertujuan menguji antioksidan ekstrak heksana, etil asetat, etanol, metanol 80% dan air pada daun kelor (Moringa oleifera, Lamk). Penelitian dilakukan dengan menggunakan metode maserasi dan uji antioksidan menggunakan metode â€DPPH free radical scavenging effectâ€. Hasil uji antioksidan terbaik terdapat pada ekstrak etanol, yaitu sebesar 118.19 Âµg/mL dengan harga R2 sebesar 99.9%, sedangkan pelarut yang lain, yaitu pelarut heksana sebesar 692.39 Âµg/mL (R2=99.9%), etil asetat 247.5 Âµg/mL (R2=99.9%), metanol 80% 121.79 Âµg/mL (R2= 0.998) dan air 189.21 Âµg/mL (R2=99.8%), sebagai pembanding antioksidan digunakan kuersetin, yaitu 15.84 Âµg/mL (R2= 99.9%).Kata kunci : Senyawa bioaktif, moringa oleifera, Â antioksidan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/11</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.11</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 40-45</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/11/10</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Agung Abadi Kiswandono, Mamay Maslahat</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/12</identifier>
				<datestamp>2023-11-29T01:26:59Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">IDENTIFIKASI SENYAWA KIMIA PADA EKSTRAK BASA BUAH LEUNCA (Solanum nigrum Linn) DENGAN  TEKNIK KHROMATOGRAFI</dc:title>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Ramdani, Dani</dc:creator>
	<dc:creator>Sutamihardja, RTM</dc:creator>
	<dc:description xml:lang="en-US">Identification of Chemical Compounds at the Leuncas Fruits Base Extracts with Chromatography MethodesÂ Â Â Â Â Â Â Â Â  Secondary methabolites contain in the plant was a alkaloids, flavonoids, terphenoids, steroids that use for medicinal, biopestiside, etc. Taksonomy principle of Leunca (Solanum nigrum Linn) is clasified to Solanaceae family, and prediction contains alkaloids. The leunca fruits base extracts qualitative tested with Dragendorf reagents and indetified with thin layer chromatography (TLC), coloumn chromatography (CC), and gass chromatography mass-spectra (GC-MS). Optimation of eluens as mobile fase forÂ  TLC and CC used three eluens, there are methanol:NH4OH (200:3), chloroform:methanol (17:3), and chloroform:ethanol (4:1). Dragendorf test showed extract contains alkaloids compounds. Eluens optimum was chloroform:methanol (17:3) with trhree fractionÂ Â  ,and GC-MS identification showed that extract contains chemical compounds as carbocilic acid, thiourea, nicotinic acid, and glicerol. Keyword s: Alkaloids compounds, leunca, chromatographyÂ  ABSTRAKÂ Â Â Â Â  Â  Â  Metabolit sekunder yang terkandung pada tanaman dapat berupa senyawaan kimia alkaloid, flavonoid, terpenoid, dan steroid. Senyawaan kimia ini dapat berfungsi sebagai obat, biopestisida, dan sebagainya. Leunca (Solanum nigrum Linn) berdasarkan ilmu taksonomi diklasifikasikan ke Â dalam famili Solanaceae (labu-labuan), dan diduga banyak mengandung senyawaan alkaloid yang berkhasiat sebagai obat. Ekstrak basa buah lenca diuji dengan pereaksi Draggendorf dan diidentifikasi dengan menggunakan teknik kromatografi lapis tipis (KLT), kromatografi kolom, dan instrumen kromatografi gas-spektra massa (GC-MS). Optimasi eluen sebagai fase gerak pada KLT dan kromatografi kolom dilakukan terhadap 3 jenis dan komposisi eluen yang berbeda yaitu Metanol : NH4OH (200:3), Kloroform:Metanol (17:3), dan Kloroform:Etanol (4:1). Hasil uji DragendorfÂ  mengindikasikan bahwa ekstrak basa buah lenca mengandung senyawaan alkaloid. Hasil optimasi eluen menunjukkan bahwa eluen yang optimum adalah Kloroform:Metanol (17:3) dengan memberikan 3 fraksi pemisahan. Nilai RfÂ  ketiga fraksi tersebut adalah 0,21; 0,31 dan 0,60. Berdasarkan analisis dengan GC-MS diketahui bahwa ekstrak basa buah lenca mengandungÂ  senyawaan kimia karboksilat, tiourea, asam nikotinat, dan gliserol.Kata kunci : Senyawa alkaloid, leunca, kromatografi</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/12</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.12</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 46-52</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/12/11</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mamay Maslahat, Dani Ramdani, RTM Sutamihardja</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/13</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">PERBANDINGAN DUA EKSTRAKSI YANG BERBEDA PADA DAUN KELOR (Moringa oleifera, lamk) TERHADAP RENDEMEN EKSTRAK DAN SENYAWA BIOAKTIF YANG DIHASILKAN</dc:title>
	<dc:creator>Kiswandono, Agung Abadi</dc:creator>
	<dc:description xml:lang="en-US">Effect of Two Extract Methods on Content and Compound of Leaf of Kelor (Moringa oleifera, Lamk)Â Â Â Â Â Â Â Â Â Â Â  It had been studied to identify and compare bia active coumpound group and extract content that had been produced of kelor leaf (Moringa oleifera,Lamk) using maserasi extract method and reflux method with methanol and hexane solution respectively. The content produced by reflux with hexane solution was 11.406 % and with methanol was 12.806 %. The content produced by maseration with hexane was 9.976 % and with methanol was 11,863 %. Statistical analysis using T-Test resulted that reflux method and maseration method using hexane solution was significantly different in eror level 5 %, but by using methanol was not significanntly diferent in 5 % eror level. Phytochemistry test for leaf powder had bioactive compound of steroid,tanin, phenol hydroquinon and saponin. In methanol extract of reflux method had bioactive compound of alkaloid, phenolhydroquinon, flavonoid, steroid,triterpenoid, tanin,and saponin, while in maseration method was alcaloid, steroid,tanin,and saponin.Keywords : Moringa oleifera, reflux,maseration, bioactive, phytochemicalÂ ABSTRAKÂ Â Â Â Â Â  Telah dilakukan penelitian dengan tujuan mengidentifikasi dan membandingkan golongan senyawa bioaktif dan rendemen ekstrak yang dihasilkan pada daun kelor (Moringa oleifera, Lamk) dengan metode ekstraksi maserasi dan refluks menggunakan pelarut heksana dan metanol 80%. Â Rendemen yang dihasilkan dengan metode refluks menggunakan pelarut heksana adalah 11,406%Â  dan metode maserasiÂ  9,976%, sedangkan dengan pelarut Metanol 80%, metode refluks 12,808% dan metode maserasi 11,863%.Â  Uji t antara metode refluks dan maserasi daun kelor menggunakan pelarut heksana berbeda nyata dan menggunakan pelarut metanol 80% tidak berbeda nyata pada taraf nyata 5%. Hasil uji fitokimia pada serbuk daun mengandung senyawa bioaktif steroid, tanin, fenol hidroquinon dan saponin. Pada ekstrak metanol 80%, metode refluks adalah golongan alkaloid, fenol hidrokuinon, flavonoid, steroid , triterpenoid, tanin, dan saponin sedangkan pada maserasi adalah golongan alkaloid, fenol hidrokuinon, flavonoid, steroid, tanin, dan saponin.Kata kunci : Moringa oleifera, refluks, maserasi, bioaktif, fitokimia.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/13</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.13</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 53-60</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/13/12</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Agung Abadi Kiswandono</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/14</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">EFEK ANTIBAKTERI SENYAWA METABOLIT SEKUNDER YANG DIPRODUKSI OLEH KAPANG ENDOFITIK AT 32 DARI Artemisia annua</dc:title>
	<dc:creator>Tisnadjaja, Djadjat</dc:creator>
	<dc:description xml:lang="en-US">Antibacterial Effect of Secondary Metabolite Compound Produced by Endophyte Mould AT 32Infection diseases such as malaria, dengue hemorrhagic fever, and tuberculosis still counted as one of major health problem in Indonesia. On the other hand Indonesia has mega biodiversity including plant and microbes potentially used for the production of antibacterial or lead compound for antibiotic. One of a potential resources is Artemisia annua. This plant is already known as a secondary metabolite compound artemisinin producer, an active compound against malaria virus. This research workÂ  was aimed to study the possible used of endophyte microbe isolated from Artemisia annua to produce antibacterial active compound through a fermentation process. Research result shown that extract of fermentation broth, either fermentation was conducted in Erlenmeyer flask or two liters stirred tank reactor, gave antimicrobial activity. It is shown by the clearing zone formation on the dish inoculated with bacterial seed. Â Two bacterial strains Staphylococcus aureus ATCC 25923 and Escherichia coli BCC 2210 were used for this study. The biggest clearing zone diameter formed was 20 mm for inhibition of Staphylococcus aureus and 9.5 mm for Eschericia coli, those were obtained by using extract of fermentation broth of two liters stirred tank reactor.Keywords Â : Â Artemisis annua, antimicrobial, endophyte, fermentation, secondary metaboliteÂ ABSTRAKÂ Â Â Â Â Â Â Â  Penyakit infeksi seperti malaria, demam berdarah dan tuberculosis (TBC) masih merupakan masalah kesehatan utama di Indonesia. Pada sisi lain Indonesia memiliki mega biodiversitas termasuk tanaman dan mikroba yang berpotensi untuk dimanfaatkan dalam produksi antibakteri atauÂ  senyawa aktif untuk antibiotik. Penelitian ini dilakukan untuk mempelajari kemungkinan pemanfaatan mikroba endofitik yang diisolasi dari tumbuhan Artemisia annua untuk memproduksi senyawa aktif antibakteri melalui proses fermentasi. Hasil penelitian menunjukkan bahwa ekstrak dari cairan fermentasi, baik ketika fermentasi dilakukan dalam skala Erlenmeyer maupun fermentor stirred tank skala 2 liter, menunjukkan adanya aktivitas antimikroba. Aktivitas antimikroba ini ditunjukkan dengan terbentuknya zona jernih pada petri dish yang diinokulasi dengan bakteri. Dalam hal ini digunakan dua galur bakteri patogen yaitu Staphylococcus aureus ATCC 25923 dan Escherichia coli BCC 2210. Diameter zona jernih terbesar yang terbentuk yaitu 20 mm untuk inhibisi dari Staphylococus aureus dan 9,5 mm untuk penghambatan Escherichia coli keduanya diperoleh dengan pemberian ekstrak cairan fermentasi yang dilakukan dengan fermentor stirred tank skala 2 liter.Kata kunci : Artemisis annua, anti mikroba, endophyte, fermentasi, metabolit sekunder</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/14</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.14</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 61-67</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/14/13</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Djadjat Tisnadjaja</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/15</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">PEMANTAUAN KUALITAS AIR DI BAGIAN HULU SUNGAI CISADANE DENGAN INDIKATOR MAKROINVERTEBRATA</dc:title>
	<dc:creator>Panjaitan, Poltak BP</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:creator>Rodian, Sofian</dc:creator>
	<dc:description xml:lang="en-US">Observation on the Water Quality of Cisadane River in the Upstream Part Using Macroinvertebrates as The IndikatorÂ Â Â Â Â Â Â Â Â  Water is an important thing for either human life or other creatures on the earth.Â  Water posses a lot of necesities, among of them is to fullfill domestics, industries, and agriculture. For this purposes people often take from rivers.Â  River Cisedane is one of rivers that available in Bogor City, having water catchment area of 1100 km2 and is one of main rivers in West Java and Banten Province. One procedure for testing water quality of rivers is to see the invertebrate animals available in the river, because some species are very sensitive for pollution. There were three points in the reserch area that were in upperpart area was Rancamaya, middle area was Pasir Jaya, and the lower area was Situ Gede.Â  Water quality value index in Rancamaya (Upper part) was 5.42, included middle level of water pollution. In Pasir Jaya (middle point) was 4.75, included polluted water level, and in SituÂ  Gede (lower prt) was 4.28 included more pollutud water level. Overall of observed research area were the lower part of river the worse pollution available. The pollution available in the research area was caused by domestics waste from inhabitant and other chemical waste from agriculture.Keyword :Â  Mikroinvertebrata, Cisadane, water quality, upper river partÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Air merupakan salah satu unsur yang sangat penting bagi kelangsungan hidup manusia maupun mahkluk hidup lainnya yang ada di muka bumi. Air memiliki banyak manfaat, diantaranya untuk memenuhi kebutuhan rumah tangga, industri dan pertanian. Untuk memanfaatkan air tersebut biasanya masyarakat mengambil air dari satu sungai pada suatu Daerah Aliran Sungai (DAS). Salah satu DAS yang terdapat di Kota Bogor yaitu DAS Cisadane dengan daerah tangkapan air seluas 1.100 km2, selain itu DAS Cisadane Â merupakan aliran sungai utama di Propinsi Banten dan Jawa Barat. Salah satu cara untuk menilai kualitas air sungai adalah dengan melihat keberadaan makroinvertebrata yang hidup di sungai tersebut. Makroinvertebrata dapat memberikan petunjuk adanya pencemar, karena jenis-jenis tertentu sangat peka terhadap pencemaran. Maka berdasarkan hal tersebut penelitian ini akan mengidentifikasi adanya makro-invertebrata di sungai yang merupakan bioindikator kualitas airnya. Tiga titik pengambilan sampel makro-invertebrata di hulu sungai Cisedane yaitu di bagian atas peneltian (Daerah Rancamaya), di bagian tengah penelitian Â (Pasir Jaya) dan di bagian bawah penelitian (Situ Gede). Nilai indeks kualitas air di bagian atas penelitian, yaitu di daerah Desa Rancamaya adalah 5,42. Itu menunjukan bahwa kualitas air di daerah tersebut masuk air berpolusi sedang. Pada lokasi penelitian di bagian tengah, yaitu Daerah Desa Pasir Jaya indeks kualitas air nya adalah 4,75. Itu menunjukan bahwa kualitas air di sana masuk air kotor. Sedangkan di bagian bawah penelitian, yaitu daerah Desa Situ Gede indeks kualitas air nya adalah 4,28. Itu menunjukan bahwa kualitas air di sana masuk air kotor. Dari Nilai Indeks Kualitas air di seluruh lokasi hulu sungai penelitian menunjukan bahwa semakin ke bawah kualitas air sungai semakin kotor. Kualitas air di sana diduga diakibatkan oleh sampah atau limbah organik yang berasal dari rumah tangga. Selain itu, kualitas air di sana diduga disebabkan oleh bahan â€“bahan kimia berbahaya yang berasal dari penggunaan pupuk, pestisida di areal pertanian.Â Kata kunci : Mikroinvertebrata, Cisadane, kualitas air, hulu.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/15</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.15</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 68-83</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/15/14</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Poltak BP Panjaitan, Supriyono Eko Wardoyo, Sofian Rodian</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/16</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">HUBUNGAN OBESITAS, UMUR DAN JENIS KELAMIN TERHADAP KADAR KOLESTEROL DARAH</dc:title>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:creator>Latifah, Latifah</dc:creator>
	<dc:description xml:lang="en-US">Relationship between Obesitiy, Age, Sex, and Blood Cholesterol Content Â Â Â Â Â Â Â Â Â Â  Obesitiy is a health condition in which excess of body fat that accumulated in the fatty tissue, and it may have an adverse effect on health that leading to reduced the life expectancy and/or increased health problems. The research purpose was to see the correlation between obesity and age towards bloodÂ  cholesterol level. 150 respondent samples were pasients who coming to Laboratorium of an hospitalÂ  who examined their cholesterol level. The method of the research was descriptive method with focusing to the sectional cross, and the data were analysed with the Pearsion correlation method. To see the effect of obesity and age towards blood cholesterol increase used the double regression. The experimental result showed that there was correlation very significantly between age and blood cholesterol, while between obesity and blood cholesterol content was significant only .Keywords : Obsity, cholesterol, age, sexÂ ABSTRAKÂ Â Â Â Â Â Â  Obesitas adalahÂ  keadaan kesehatan dan stuktur gizi dengan akumulasi lemah tubuh berlebihan disertai dengan resikoÂ  kelainan patologis multi organ, atau secara sederhana obesitas didefinisikan sebagai keadaan penumpukan lemak yang berlebihan di dalam jaringan lemak sehingga mengganggu kesehatan..Tujuan dari penelitian ini adalah untuk mengetahui hubungan (korelasi) antara obesitas, umur dan jenis kelamin dengan kadar kolesterol darah, serta mengetahui pengaruh obesitas, umur dan jenis kelamin terhadap kenaikan kadar kolesterol darah.Â  Populasi yang diambil sebagai sampel yaitu pasien yang berkunjung di Laboratorium Klinik RS Bina Husada yang memeriksakan kadar kolesterol darahnya, sebanyak 150 orang. Jenis penelitian yang digunakan adalah metode deskriptif dengan pendekatan cross sectional ,yang selanjutnya data diolah dengan metode Pearsion correlation. Sedang untuk melihat pengaruh obesitas dan umur terhadap kenaikan kadar kolesterol darah dengan metode Regresi berganda.Â  BerdasarkanÂ  hasilÂ  penelitianÂ  maka dapat ditarik kesimpulan sebagai berikut: Terdapat hubungan (korelasi) yang sangat nyata antara umur dengan kadar kolesterol, sedangkan hubungan (korelasi) antara obesitas (IMT) denganÂ  kadar kolesterol nyata.Kata kunci : Obesitas, kolesterol, umur, jenis kelamin</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/16</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.16</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 84-93</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/16/15</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Lilis Sugiarti, Latifah Latifah</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/17</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
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	xmlns:dc="http://purl.org/dc/elements/1.1/"
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	<dc:title xml:lang="en-US">SINTESIS POLI ASAM LAKTAT BERBOBOT MOLEKUL RENDAH MEMAKAI KATALIS STANNUM</dc:title>
	<dc:creator>Hutagaol, Ricson P.</dc:creator>
	<dc:creator>Nurhayati, Lany</dc:creator>
	<dc:creator>Analy, Jessica</dc:creator>
	<dc:description xml:lang="en-US">Synthesis Of Poly Lactic Acid Catalyst To Use Low-molecular-weight Using Stannum CatalystÂ Â Â Â Â Â Â Â Â Â  Poly lactic acid is a polyester that can be produced using raw materials of renewable natural resources such as starch and cellulose. These polymers can be degraded by hydrolysis process in the body and excreted within a few months. This polymer is not toxic and has been widely used in medical field such as for implants and medium in drug delivery systems (Drug Delivery System, DDS). Low molecular weight polymers that accelerate the degradation and the increasing concentration of drug detachment, while polymers with high molecular weight have a lower solubility so degraded more slowly. Polymerization process is affected by the solvent used, reaction temperature, time of agitation and catalyst used. Stanum (Sn) is the best catalyst is used to obtain polymers at relatively low temperatures. Synthesis is done by mixing the lactic acid with xylene and Stanum as a catalyst. Variation Stanum catalyst used, ie 0%, 1.0%, 2.0%, 3.0%, and 4.0%. Reacted in a reactor at a temperature of 140 Â° C for 14 hours. Added chloroform, filtered and added to cold methanol. The precipitate was filtered and washed with cold methanol. The rst deposits exposed in the air and then heated in an oven at 80 Â° C. Based on the results of the study, obtained the concentration of 2% was an optimum concentration of Sn is used to produce 4.55 grams of poly lactic acid of 20 grams of lactic acid with a molecular weight of 23289.83g/mol and the residue Stanum at 175.174 ppm. Keywords : Poly lactic acid, polikondensasu, catalyst, sanum. Â ABSTRAKÂ Â Â Â Â Â Â Â Â  Poli asam laktat merupakan poliester yang dapat diproduksi menggunakan bahan baku sumber daya alam terbarukan seperti pati dan selulosa. Polimer ini dapat terdegradasi dengan proses hidrolisis dalam tubuh dan terekskresi dalam waktu beberapa bulan. Polimer ini tidak meracuni tubuh dan telah banyak digunakan dalam bidang kedokteran seperti untuk implan dan medium dalam sistem penyampaian obat (Drug Delivery System, DDS). Bobot molekul polimer yang rendah mempercepat degradasi dan naiknya konsentrasi lepasan obat, sedangkan polimer dengan bobot molekul tinggi memiliki kelarutan yang lebih rendah sehingga terdegradasi lebih lambat. Proses polimerisasi dipengaruhi oleh pelarut yang digunakan, suhu reaksi, waktu pengocokan dan katalis yang digunakan. Stanum (Sn) merupakan katalis yang paling baik digunakan untuk mendapatkan polimer pada suhu yang relatif rendah. Sintesis dilakukan dengan mencampur asam laktat dengan xilena dan stanum sebagai katalis. Dilakukan variasi katalis stanum yang digunakan, yaituÂ Â Â  0 % ; 1,0 % ; 2,0 % ; 3,0 % ; dan 4,0 %. Direaksikan dalam reaktor pada suhuÂ  140 Â°C selama 14 jam. Ditambahkan kloroform, disaring dan ditambahkan metanol dingin. Endapan disaring dan dicuci dengan metanol dingin. Sisa endapan dianginkan di udara lalu dipanaskan dalam oven pada suhu 80 Â°C. Berdasarkan hasil penelitian, didapat konsentrasi 2% merupakan konsentrasi Sn yang paling optimum digunakan untuk menghasilkan 4,55 gram poli asam laktat dari 20 gram asam laktat dengan bobot molekul 23289,83 g/mol dan residu stanum sebesar 175,174 ppm.Kata kunci : Poli asam laktat, polikondensasu, katalis, stanum.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/17</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i1.17</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 1 (2011): Sains Natural; 94-100</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/17/16</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Ricson P. Hutagaol, Lany Nurhayati, Jessica Analy</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/18</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
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<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">UJI KETAHANAN TIGA VARIETAS TOMAT (SOLANUM  LYCOPERSICUM L.) TERHADAP SERANGAN CMV (CUCUMBER MOSAIC VIRUS) DENGAN METODE DAS-ELISA</dc:title>
	<dc:creator>Tudaryati, Lia Agturani</dc:creator>
	<dc:creator>Nurilmala, Febi</dc:creator>
	<dc:creator>Dwiharniati, Krisna</dc:creator>
	<dc:description xml:lang="en-US">Endurance Test Three Tomato Variety (Solanum lycopersicum L.) Against Attacks CMV (Cucumber Mosaic Virus) DAS-ELISA MethodÂ Â Â Â Â Â Â Â Â  Tomato plantation intensification can be done by controlling nuisance organism plant causes disease in tomato, such as CMV. CMV can be transmitted mechanically, and therefore testing of tomato varieties resistance to CMV can be performed with CMV isolates infect mechanically to healthy tomato plants (variety Marta F1, San Marino, and Viccario). CMV isolates derived from two sources, namely a positive tomato plants attacked by CMV (plant sap) and the positive control CMV AGDIA producers commonly used as a positive control test DAS-ELISA (Double Antibody Sandwich-Enzyme Linked immunosorbent assay). This study aims to test three varieties of tomato resistance against CMV attacks. Research conducted in the screen house and laboratory virology Central Agricultural Quarantine Standards Test. Identification of CMV infection was done by observing the incubation period, symptoms appeared, and continued with DAS-ELISA test. Structured treatment completely randomized design (CRD) with 6 replications. Data processed with fingerprint analysis and continued with various multiple Duncan test at 5% level test. The results showed the disease symptoms appeared only on the varieties of San Marino from CMV infected plant sap. Symptoms caused a reduction of leaf rolling and leaf lamina 8-10 day incubation period and symptoms of stunted stems with 14-28 day incubation period, the San Marino CMV causes the reduction of plant height by 33%. Sensitivity of tomato varieties against CMV San Marino sap from plants was quantitatively evidenced by positive results on the DAS-ELISA test. Meanwhile, F1 and Marta varieties resistant to Viccario CMV infection sap from plants and the positive control CMV AGDIA producers. Keywords : Tomato (Solanum Lycopersicum l.), Cucumber Mosaic Virus, DAS-ELISA methodÂ ABSTRAKÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â  Intensifikasi perkebunan tomat dapat dilakukan dengan mengendalikan organisme pengganggu tanaman (OPT) penyebab penyakit pada tomat, seperti CMV. CMV dapat ditularkan secara mekanis, oleh karena itu pengujian ketahanan varietas tomat terhadap CMV dapat dilakukan dengan menularkan isolat CMV secara mekanik kepada tanaman tomat sehat (varietas Marta F1, San Marino, dan Viccario). Isolat CMV berasal dari dua sumber, yaitu tanaman tomat yang positif terserang CMV (sap tanaman) dan kontrol positif CMV produsen AGDIA yang biasa digunakan sebagai kontrol positif pengujian DAS-ELISA (Double Antibody Sandwich-Enzyme Linked Immunosorbent assay). Penelitian ini bertujuan untuk menguji ketahanan tiga varietas tomat terhadap serangan CMV. Penelitian dilaksanakan di screen house dan laboratorium virologi Balai Besar Uji Standar Karantina Pertanian pada bulan Januari sampai April 2008. Identifikasi hasil penularan CMV dilakukan dengan mengamati periode inkubasi, gejala yang muncul, dan dilanjutkan dengan pengujian DAS-ELISA. Perlakuan disusun dengan rancangan acak lengkap (RAL) dengan 6 ulangan. Data diolah dengan analisis sidik ragam dan dilanjutkan dengan uji berganda Duncan pada taraf uji 5%. Hasil penelitian menunjukkan gejala penyakit hanya muncul pada varietas San Marino yang ditulari CMV asal sap tanaman. Gejala yang ditimbulkan berupa daun menggulung dan reduksi lamina daun dengan masa inkubasi 8-10 hari, serta gejala batang kerdil dengan masa inkubasi 14-28 hari, CMV pada San Marino menyebabkan reduksi tinggi tanaman sebesar 33%. Kesensitifan tomat varietas San Marino terhadap CMV asal sap tanaman secara kuantitatif dibuktikan dengan hasil yang positif pada pengujian DAS-ELISA. Sedangkan, varietas Marta F1 dan Viccario tahan terhadap penularan CMV asal sap tanaman maupun kontrol positif CMV produsen AGDIA.Kata kunci : Tomat (Solanum lycopersicumÂ  L.), Cucumber Mosaic Virus, metode DAS-ELISA</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/18</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.18</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 101-110</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/18/17</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Lia Agturani Tudaryati, Febi Nurilmala, Krisna Dwiharniati</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/19</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
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<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
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	<dc:title xml:lang="en-US">EKSTRAKSI DAN IDENTIFIKASI PENDAHULUAN GOLONGAN SENYAWA FENOL DARI RIMPANG LENGKUAS MERAH (Alpinia purpurata (Vieill) K. Sch)</dc:title>
	<dc:creator>Yuliani, Nia</dc:creator>
	<dc:creator>Syawaalz, Amry</dc:creator>
	<dc:creator>Lisna, Mawaddah</dc:creator>
	<dc:description xml:lang="en-US">Extraction and Identification of Phenol Compounds Group Introction galanga Rhizome RED (Alpinia purpurata (Vieill) K. Sch)Â Â Â Â Â Â Â Â Â Â  Indonesia is a country rich in natural resources with a variety of crops are grown, one of which is a spice plant. Plant herb is a plant that is used in addition to the food manufacturing process is also used as potential drugs medicines, such that the red ginger (Alpinia purpurata (Vieill) K. Sch). Red ginger is a plant that has been known to have the potential to cure many diseases. Generally, people use the red ginger to treat diarrhea and skin diseases caused by fungi. Ginjer contains phenol red that could serve as an antibacterial. The study was conducted to extract the phenolic compounds and identify them by Gas Chromatography and Mass Spectrometry (GCMS), with the following steps: extraction of samples, testing of phenolic compounds, and identification of phenolic compounds by GCMS. According to the research and identification was carried out on the red rhizome ethanol extract, we could conclude that the phytochemical tests showed positive rhizome containing phenol red. And from the GCMS got some phenolic compounds contained in the ethanol extract of rhizome of red, one compound with a molecular weight of 164 g / mol with molecular formula C10H12O2 .Keyword : Red gingge (Alpinia purpurata (Vieill) K. Sch), compound fenol, extraction, GCMS.Â ABSTRAKÂ Â Â Â Â Â Â Â Â Â Â  Indonesia merupakan negara yang kaya dengan sumber daya alam dengan berbagai jenis tanaman yang tumbuh, salah satu diantaranya adalah tanaman rempah - rempah. Tanaman rempah merupakan tanaman yang dimanfaatkan selain untuk proses pembuatan makanan juga cukup potensial dimanfaatkan sebagai obat â€“ obatan, diantaranya yaitu lengkuas merah (Alpinia purpurata (Vieill) K. Sch). Lengkuas merah merupakan tanaman yang telah diketahui berpotensi dapat mengobati berbagai macam penyakit. Umumnya masyarakat menggunakan lengkuas merah untuk mengobati diare dan penyakit kulit yang disebabkan oleh jamur. Lengkuas merah mengandung senyawa fenol yang dapat berfungsi sebagai antibakteri. Penelitian ini dilakukan untuk mengekstraksi senyawa fenol dan mengidentifikasinya dengan Gas Chromatography dan Mass Spectrometry (GCMS), dengan melalui beberapa tahapan yaitu ekstraksi sampel, uji senyawa fenolik, dan identifikasi senyawa fenolik dengan GCMS. Berdasarkan hasil penelitian dan identifikasi yang telah dilakukan pada ekstrak etanol rimpang lengkuas merah, dapat disimpulkan bahwa uji fitokimia menunjukkan rimpang lengkuas merah positif mengandung senyawa fenol. Dan dari hasil GCMS didapatkan beberapa senyawa fenol yang terkandung pada ekstrak etanol rimpang lengkuas merah, salah satunya senyawa dengan berat molekul 164 g/mol yang mempunyai rumus molekul C10H12O2.Kata kunci : Lengkuas merah (Alpinia purpurata (Vieill) K. Sch), senyawa fenol, ekstraksi, GCMS.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/19</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.19</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 111-118</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/19/18</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Nia Yuliani, Amry Syawaalz, Mawaddah Lisna</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/20</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">EFEKTIVITAS INOKULUM FUNGI MIKORIZA ARBUSKULA TERHADAP PERTUMBUHAN SEMAI TANAMAN HUTAN</dc:title>
	<dc:creator>Setyaningsih, Luluk</dc:creator>
	<dc:description xml:lang="en-US">Effectiveness of mycorrhizal fungi inoculum Arbuskula Growth of seedling Plain ForestÂ Â Â Â Â Â Â Â  Utilization of mycorrhizae in forestry are often constrained in the availability of inoculum mukoriza that not every moment can be obtained in sufficient quantities and in accordance with the type of crop and land acidity. It required effort to make the inoculant that can anticipate the condition. It has been developed inoculant arbuscular mycorrhizal fungi (AMF), that explores from various acidity land from under the stands of forest plants, namely inoculum R2, P2, N2 and C2-containing AMF of the genus Glomus sp. The study was conducted with 5 grams inokulasi AMF inoculum (equivalent to 15-30 spores) on seedling sengon (Paraserianthes falcataria), teak (Tectona grandis) and meranti (Shorea leprosula). Observations were carried out for 9 weeks by measuring the height and diameter growth of each week and dry biomass and shoot-root ratio at the end of observation. The statistical analysis was complete randomized with design 5 treatment of inoculant without comparing among species of forest plants seedlings. Results of variance analysis showed that after 9 weeks of observation, AMF inoculum treatments did not significantly affect height growth (p &amp;lt;0:40) and diameter (p &amp;lt;0.59) of sengon seedlings, but significant effect on diameter growth (p &amp;lt;0:09) and the growth of teak seedlings higher (p &amp;lt;0:06) and total dry weight (BKT) (p &amp;lt;0.07) seedling timber. C2 inoculant was effective to increase seedling height growth sengon up to 5% and meranti up to 22%. R2 inoculant increased height growth for seedlings of teak and meranti respectively 25% and 81%; Inokulan P2 increased by 23% and 81%, while the N2 inoculant increased by 21% and 53% of seedling growth of teak and meranti. Inoculant R2, P2 and N2 are recommended to be applied to seedlings of teak, and timber, while for legume crops such as sengon more advisable to use inoculants C2.Key words : inoculum, Arbuscular Mycorrhizal Fungi, Forest plants seedlingÂ Â AbstrakÂ Â Â Â Â Â Â Â Â  Pemanfaatan mikoriza di bidang kehutanan sering terkendala pada ketersediaanÂ  inokulum mukoriza yang tidak setiap saat dapat diperoleh dalam jumlah cukup dan yang sesuai dengan jenis tanaman serta keasaman lahan.Â  Untuk itu diperlukan upaya untuk membuat inokulan yang dapat mengantisipasi kondisi tersebut.Â  Telah dikembangkan inokulan fungi mikoriza arbuskula (FMA) hasil eksplorasi dari berbagai keasaman lahan dari bawah tegakan tanaman hutan, yaitu inokulum R2, P2, N2 dan C2 yang mengandung FMA dari genus Glomus sp. Penelitian dilakukan dengan menginokulasikan sebanyak 5 gram inokulum FMA (setara 15-30 spora) tersebut pada semai sengon (Paraserianthes falcataria), jati (Tectona grandis) dan meranti (Shorea leprosula).Â  Pengamatan dilakukan selama 9 minggu dengan mengukur pertumbuhan tinggi dan diameter setiap minggu dan biomasa kering serta rasio pucuk-akar pada akhir pengamatan.Â  Penelitian dirancang secara acak lengkap dengan 5 perlakuan inokulan dengan tanpa membandingkan antar jenis semai tanaman hutan. Hasil analisa sidik ragam menunjukan bahwa setelah 9 minggu pengamatan, perlakuan inokulum FMA tidak berpengaruh nyata terhadap pertumbuhan tinggi (p&amp;lt;0.40) dan diameter (p&amp;lt;0.59) semai sengon, namun berpengaruh nyata pada pertumbuhan diameter (p&amp;lt;0.09) semai jati dan pertumbuhan tinggi (p&amp;lt;0.06) serta berat kering total (BKT) (p&amp;lt;0.07) semai meranti . Inokulan C2 efektif untuk peningkatan pertumbuhan tinggi semai sengon hingga 5% dan meranti hingga 22%.Â  Inokulan R2 mampu meningkatkan pertumbuhan tinggi semai jati dan meranti masing-masing sebesar 25% dan 81%;Â  Inokulan P2 meningkatkan sebesar 23% dan 81%; sedangkan inokulan N2 mampu meningkatkan sebesar 21% dan 53% terhadap pertumbuhan semai jati dan meranti.Â  Inokulan R2, P2 dan N2 lebih disarankan untuk diaplikasikan pada semai jati, dan meranti, sedangkan untuk tanaman legum seperti sengon lebih disarankan menggunakan inokulan C2.Kata kunci : Inokulum, Fungi Mikoriza arbuskula, Semai tanaman hutan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/20</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.20</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 119-125</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/20/19</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Luluk Setyaningsih</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/21</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">SKRINING SENYAWA KIMIA DAN PENGARUH METODE MASERASI DAN REFLUKS PADA BIJI KELOR (Moringa oleifera, Lamk) TERHADAP RENDEMEN EKSTRAK YANG DIHASILKAN</dc:title>
	<dc:creator>Kiswandono, Agung Abadi</dc:creator>
	<dc:description xml:lang="en-US">Chemical CompoundsÂ  and Effect of Screening Method on Seeds maceration andrefluxing moringa (Moringa oleifera, Lamk) to the yield Extract GeneratedÂ Â Â Â Â Â Â Â Â Â  Studies had been conducted with the goal of identifying chemical compounds and compare the two methods of extraction, the maceration and reflux in moringa seeds (Moringa oleifera, Lamk) to the yield generated. The study was conducted by using the method of extraction and maceration reflux with solvent hexane and 80% methanol, and then the identification of classes of secondary metabolites phytochemical test done. Moringa seed samples had 11.6% moisture content. Yield produced by the reflux method using n-hexane solvent were 23.03% and 21.22% maceration method. While the 80% methanol solvent refluxing method had yield 6.16% and 5.26% maceration method. Phytochemical test results on seed powder contained alkaloids and saponins. Phytochemical test results on seed extract reflux method was an alkaloid, hydroquinone phenols, flavonoids and saponins while the maceration method was a class of compounds alkaloids and saponins.Keywords : Moringa oleifera, reflux, maceration, phytochemicalsÂ ABSTRAKÂ Â Â Â Â Â Â Â Â Â  Telah dilakukan penelitian dengan tujuan mengidentifikasi senyawa kimia dan membandingkan dua metode ekstraksi, yaitu maserasi dan refluks pada biji kelor (Moringa oleifera, Lamk) terhadap rendemen yang dihasilkan. Penelitian dilakukan dengan menggunakan metode ekstraksi maserasi dan refluks dengan pelarut heksana dan metanol 80%, kemudian identifikasi golongan senyawa metabolit sekunder dilakukan dengan uji fitokimia. Sampel biji kelor memiliki kadar air 11,6%. Rendemen yang dihasilkan dengan metode refluks menggunakan pelarut n-heksana adalah 23,03% dan metode maserasi 21,22%. Sedangkan dengan pelarut Metanol 80% metode refluks mempunyai rendemen 6,16% dan metode maserasi 5,26%. Hasil uji fitokimia pada serbuk biji mengandung alkaloid dan saponin. Hasil uji fitokimia pada ekstrak biji menggunakan metode refluks adalah alkaloid, fenol hidrokuinon, flavonoid, dan saponin sedangkan dengan metode maserasi adalah senyawa golongan alkaloid dan saponin.Kata kunci : Moringa oleifera, refluks, maserasi, fitokimia</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/21</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.21</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 126-134</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/21/20</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Agung Abadi Kiswandono</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
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		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/22</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">PEMANFAATAN LIGNIN KRAFT DARI LINDI HITAM SEBAGAI PEREKAT KAYU KOMPOSIT</dc:title>
	<dc:creator>Santoso, Adi</dc:creator>
	<dc:description xml:lang="en-US">Utilization of Kraft Lignin from black liquor as adhesives in the wood composite.Â Â Â Â Â Â Â Â Â Â Â  The lignin in the sulphate black liquor (known as kraft lignin) has a strong affinity when being reacted with formaldehyde to form lignin formaldehyde adhesives. To increase the bonding strength, the lignin is co-polymerized with phenol or resorcinol to form lignin phenol formaldehyde or lignin resorcinol formaldehyde resins. The resins can be applied in of reconstituted wood products manufacturing such as plywood, finger-jointed wood assembly and glue laminated lumber. The research result showed that each type of lignin based adhesives had specific characters which met Indonesian standard. The test result on plywood which glued by lignin formaldehyde (LF) and lignin phenol formaldehyde (LPF) indicated that bonding strength of the products were 8.0-27.0 kg/cm2, for a while on laminated wood which glued by lignin resorcinol formaldehyde (LRF) indicated that bonding strength of the products were 36.9-88.0 kg/cm2, modulus of rupture and modulus of elasticity was 372-637kg/cm2 and47,164-60,237 kg/cm2, respectively. The formaldehyde emissions were about 0.05-0.14 mg/L. The efficiency of lignin based adhesives on finger joint application reach at 35.4-73.6%. Therefore, the synthesis of lignin based adhesives, an unique wood adhesive with good resin characteristics and met bonding strength and formaldehyde emission requirement as stated in Japanese standard. Keywords : Kraft lignin, composite wood, adhesivesÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Lignin dalam lindi hitam (dikenal sebagai lignin kraft) memiliki afinitas yang kuat bila direaksikan dengan formaldehida membentuk perekat lignin formaldehida. Guna meningkatkan daya rekatnya, lignin dikopolimerisasi dengan phenol atau resorsinol sehingga terbentuk resin lignin phenol formaldehida atau lignin resorsinol formaldehida. Resin tersebut dapat diaplikasikan dalam pembuatan produk kayu rekonstitusi seperti kayu lapis, papan sambung dan kayu lamina. Hasil penelitian menunjukkan bahwa setiap jenis perekat berbasis lignin memiliki karakter yang spesifik yang memenuhi persyaratan standar Indonesia. Hasil pengujian terhadap kayu lapis yang direkat dengan lignin formaldehida (LF) dan lignin phenol formaldehida (LPF) menunjukkan bahwa keteguhan rekat produk tersebut berkisar antara 8,0-27,0 kg/cm2, sementara untuk kayu lamina yang direkat dengan lignin resorsinol formaldehida (LRF) berkisar antara 36,9-88,0 kg/cm2, dengan modulus of rupture dan modulus of elasticity berturut-turut sekitar 372 - 637kg/cm2 Â dan47,164 - 60,237 kg/cm2. Emisi formaldehida produk berkisar antara 0,05-0,14 mg/L. Efisiensi perekat berbasis lignin pada aplikasi papan sambung mencapai 35,4 - 73,6%. Produk yang menggunakan perekat berbasis lignin ini memenuhi persyaratan Jepang.Kata kunci : Lignin Kraft, kayu majemuk, perekat</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/22</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.22</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 135-139</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/22/21</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Adi Santoso</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/23</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">PENGARUH PELABURAN AMONIUM HIDROKSIDA TERHADAP EMISI FORMALDEHIDA KAYU LAPIS DAN PAPAN PARTIKEL</dc:title>
	<dc:creator>Santoso, Adi</dc:creator>
	<dc:creator>Yuwono, Adi</dc:creator>
	<dc:creator>Renwarin, A. R. M.</dc:creator>
	<dc:creator>Sutigno, Paribotro</dc:creator>
	<dc:description xml:lang="en-US">The effect of spreading by ammonium hydroxide on formaldehyde emission of plywood and particleboardThe formaldehyde emmision from panel products such as plywood and particleboard bonded with urea formaldehyde (UF) can have negative effects to human Â health, especially if used in a room with limited ventilation. To reduce formaldehyde emission, chemical agents can be applied to the product. In this exsperiment report, the effect of ammonium hydroxide 25% application on formaldehyde emission of UF on to wards the bonded plywood and particleboard was described. Application of ammonium hydroxide on plywood and particleboard significantly affected UF emission. The higher amount of application of ammonium hydroxide, the lower formaldehyde emission from plywod and particleboard. The effect of ammonium hydroxide to UF emission level differed according to type of panel and examination standard. Application of ammonium hydroxide of 0.009 ml/cm2 and 0.015 ml/cm2, the formaldehyde emission of plywood and particleboard could meet Japanese Standard; while spreading on particleboard of 0,003 ml/cm2and on plywood of 0,014 ml/cm2, the formaldehyde emission could conform to American Standard.Key words : Plywood, particleboard, formaldehyde emission, spreading, ammonium hydroxideÂ ABSTRAKEmisi formaldehida dari produk panel seperti kayu lapis dan papan partikel yang direkat dengan urea formaldehida (UF) dapat mengganggu kesehatan, terutama jika digunakan di dalam ruangan dengan ventilasi terbatas. Untuk mengurangi emisi formal-dehida,Â  produk tersebut dapat dilburi dengan suatu bahan kimia. Dalam tulisan ini dikemukakan pengaruhÂ  dari penggunaan pelaburan dengan amonium hidroksida 25 % terhadap emisi formaldehida kayu lapis dan papan partikel yang masing-masing direkat dengan UF. Pengaruh pelaburan dengan amonium hidroksida terhadap emisi formaldehida kayu lapis dan papan partikel masing-masing sangat nyata. Semakin banyak amonium hidroksida yang dilaburkan, emisi formaldehida dari kayu lapis dan papan partikel sema-kin rendah. Pengaruh amonium hidroksida terhadap tingkat penurunan emisi formaldehida berbeda menurut jenis panel dan standar pengujian. Pada pelaburan dengan amonium hidroksida sebanyak 0,009 ml/cm2 dan 0,015 ml/cm2, kayu lapis dan papan partikel memenuhi persyaratan emisi formaldehida Standar Jepang. Sedangkan pelaburan pada papan partikel sebanyak 0,003 ml/cm2, dan pada kayu lapis sebanyak 0,014 ml/cm2, emisi formaldehidanya memenuhi Standar Amerika.Kata kunci : Kayu lapis, papan partikel, emisi formaldehida, pelaburan, amonium hidroksida</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/23</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.23</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 140-144</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/23/22</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Adi Santoso, Adi Yuwono, A. R. M. Renwarin, Paribotro Sutigno</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/24</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">STUDI TRANSPOR SENYAWA FENOL MENGGUNAKAN MEMBRAN CAIR POLIEUGENOL DENGAN PELARUT DIKLOROMETANA</dc:title>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Kiswandono, Agung Abadi</dc:creator>
	<dc:description xml:lang="en-US">Study on Phenol Compound Transport using Polieugenol Liquid Membrane with Dichloromrthane SolvenÂ Â Â Â Â Â Â Â  Phenol is a component in waste water that is very dangerous, because it is toxic, corosif on skins and carcinogenics. It can be separated by using liquid membranes. Membrane can be a very specific filter. Liquid membrans transport technique used three phase. The phase are donor phase that contain substance to be separated, membrane phase that contains ligan in the organic solvents,Â  and aceptore phase that contain base as release agent of ligans complex. Polyeugenol have a condition as a ligan that is capable as selective chelate agent for phenol coumpounds. In this research, polieugenol were used with dichloromethane solvents as a membrane for separating and transporting phenol separated, NaOH as release phase with variating pHs, concentrations of release phase, transport time and membrane concentrations. The result showed that liquid membrane of polieugenol in dichloromethane solvent can transport phenol at source phase pH 6.5, at optimum released concentrationÂ  was 0.75 M, optimum transport times was 72 hours, and optimum membran concentrations was 1,5Ã—10-3 with % transport was 65.2%.Keywords : Liquid membrane, polyeugenol, dichlorometane, phenolÂ ABSTRAKÂ Â Â Â Â Â Â  Fenol merupakan salah satu komponen dalam air limbah yang sangat berbahaya, karena beracun dan bersifat korosif terhadap kulit sertaÂ  karsinogenik. Fenol dapat dipisahkan dengan menggunakan Â membran cair. Membran dapat bertindak sebagai filter yang sangat spesifik. Teknik transpor membran cair melibatkan tiga fasa yaitu fasa donor,Â  mengandung bahan yang akan dipisahkan, fasa membran berisi ligan dalam pelarut organik dan fasa akseptor yang berisi basa sebagai agen pelepasÂ  dari kompleks ligan.Polieugenol mempunyai syarat sebagai ligan sehingga mampu berfungsi sebagai agen pengkhelat yang selektif untuk senyawa fenol. Pada penelitian ini digunakan polieugenol dengan pelarut diklorometana sebagai membranÂ  untuk pemisahan dan transpor senyawa fenol, dan Â NaOH sebagai fasa pelucut dengan memvariasikan pH, konsentrasi fasa pelucut, waktu transpor dan konsentrasi membran. Hasil penelitian menunjukan bahwaÂ  membran cair polieugenol dalam pelarut diklorometana dapat mentranspor fenol pada pH fasa sumber optimum 6,5, pada konsentrasi pelucut optimum 0,75 M, waktu transpor optimum 72 jam, dan pada konsentrasi membran optimum 1,5Ã—10-3 dengan % transpor 65,2%.Kata kunci : membran cair, polieugenol, diklorometana, fenol</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/24</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.24</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 145-155</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/24/23</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mamay Maslahat, Agung Abadi Kiswandono</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/25</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">GINGEROL PADA RIMPANG JAHE MERAH (Zingiber officinale, Roscoe) DENGAN METODE PERKOLASI TERMODIFIKASI BASA</dc:title>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:creator>Suwandi, Asridewi</dc:creator>
	<dc:creator>Syawaalz, Amry</dc:creator>
	<dc:description xml:lang="en-US">Gingerol in red ginger (Zingiber officinale, Roscoe) with percolation method modified baseÂ Â Â Â Â Â Â Â  Ginger was a spice type most widely used in various food and beverage recipes. Ginger is commonly used as a medicine at colds, indigestion, as an analgesic, anti-inflammatory, and others. Some of main components in ginger such as gingerol and shogaol are antioxidants. The purpose of this research was to isolate the red-gingerol in ginger rhizome and to identify. Metode used was extraction process by using percolation with ethanol solvent at room temperature, followed by isolation of gingerol by adding KOH solution at concentrations of 0, 1N, 0.5 N; 1.0 N. Furthermore, the extracted of compounds were identified using TLC and GC-MS.Based on the research result and identification had been carried out on samples of red ginger, it could be concluded that the water content of red ginger samples were 9.70%, with levels of 8.72% oleoresin. The weight of crude gingerol obtained in 1.0 N KOH concentration was to 0.61 g, while the concentration of KOH that produces greatest gingerol was 0.5 N, which amounted of 6.13%. The other peak than the gingerol peak suggested that the isolation was not pure yet. Homovanilil Â alcohol Â compounds Â was Â always Â in Â the greatest Â prosentase, Â which Â was Â 22%, Â followed Â by Â shogaol Â compounds of 4.30% . Ion Â with Â a value Â 137 of Â m / e: Â was Â the highest Â ions Â to be formed and the most stable ion Most compounds isolated by KOH Â were phenolic Â compounds groups, such as gingerol, shogaol and homovanilil alcohol.Keywords: red ginger, gingerol, extraction, TLC, GC-MSÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Jahe merupakan jenis rempah-rempah yang paling banyak digunakan dalam berbagai resep makanan dan minuman. Jahe biasa digunakan masyarakat sebagai obat masuk angin, gangguan pencernaan, sebagai analgesik, anti-inflamasi, dan lain-lain. Beberapa komponen utama dalam jahe seperti gingerol dan shogaol bersifat antioksidan. Adapun tujuan penelitian ini dilakukan adalah untuk mengisolasi gingerol pada rimpang jahe merah secara optimum dan mengidentifikasinya.Metode penelitian yang digunakan meliputi proses ekstraksi jahe merah dengan menggunakan teknik ekstraksi perkolasi suhu ruang dengan pelarut etanol, dilanjutkan dengan isolasi gingerol dengan penambahan larutan KOH pada konsentrasi 0,1N; 0,5N; 1,0N. Selanjutnya senyawa hasil ekstraksi diidentifikasi dengan menggunakan TLC dan GC-MS. Berdasarkan hasil penelitian dan identifikasi yang telah dilakukan pada sample jahe merah, dapat disimpulkan bahwa kadar air sampel jahe merah yang diteliti adalah sebesar 9,70%, dengan kadar oleoresin sebesar 8,72%. Bobot kasar gingerol terbesar diperoleh pada konsentrasi KOH 1,0N yaitu sebesar 0,61g, sedangkan konsentrasi KOH yang menghasilkan %kemelimpahan gingerol terbesar adalah pada konsentrasi 0,5N, yaitu sebesar 6,13%. Adanya puncak lain selain gingerol menunjukkan bahwa hasil isolasi belum murni. Senyawa homovanilil alkohol selalu terdapat dengan %kemelimpahan terbesar pada setiap sample, yakni 22%, diikuti senyawa shogaol sebesar 4,30%. Ion dengan nilai m/e : 137 adalah ion yang paling banyak terbentuk dan merupakan ion yang stabil. Sebagian besar senyawa yang terisolasi oleh KOH adalah senyawa golongan fenol, seperti gingerol, shogaol dan homovanilil alkohol.Kata kunci : jahe merah, gingerol, ekstraksi, TLC, GC-MS</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/25</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.25</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 156-165</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/25/24</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Lilis Sugiarti, Asridewi Suwandi, Amry Syawaalz</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/26</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">ISOLASI DAN KARAKTERISASI KITIN DARI LIMBAH UDANG</dc:title>
	<dc:creator>R, Mahyudin A.</dc:creator>
	<dc:creator>Yuliandri, Rahmat</dc:creator>
	<dc:creator>Syawaalz, Amry</dc:creator>
	<dc:description xml:lang="en-US">Isolation and Characterization of Chitin From Shrimp WasteÂ Â Â Â Â Â Â Â Â Â  Chitin is a natural biopolymer that is widespread in nature and the second abundance only to cellulose organic compounds are available in the earth. In general, in nature chitin are not included in the free state, but binds to the protein, mineral and pigment in various animal skeletons group of arthropoda, annelida, mollusk, coelenterata, nematodes, insects, and some classes of fungi and theÂ  organic constituent part is very important. Average shrimp shell contains 25-40% protein, 40-50% CaCO3 and 15-20% chitin, but the magnitude of the component content is still dependent on species and habitats. Although chitin is widespread in nature, but the main source that can be utilized as a source of chitin is the use of shrimp waste. This is because the shrimp waste easily obtained in large quantities that can be produced commercially. The purpose of this study was to determine how the isolation of chitin from shrimp waste by chemical processes and their characterization and compare in detail the content of chitin found in the head, body and tail skin of the shrimp. In addition, to determine the effect of insulating phases of chitin to chitin produced. This study is an experimental research by isolation of chitin in the head, body and tail skin of the shrimp. In the early stages of shrimp waste preparation where the head and skin of the body and tail of each shrimp was separated, cleaned, dried, and milled. Chitin isolation process is done by two ways in which the first stage on the way deproteination done first and subsequent demineralization stages. While in the second stage of demineralization way done first, followed deproteination stage. In phase deproteinasiÂ  NaOHÂ  1N solution with a ratio of 1: 10 (by weight of shrimp sample: NaOH 1N). This process was carried out at a temperature of 65oC for three hours. While in the process of demineralization using HCl 2N solution and soaked for 2 hours with a comparison between theÂ  shells samples with HCl used are 1: 15. After that just do the bleaching process. Each repetition of the way done twice. Research results show that the insulating phase difference of chitin used apparently affect the yield and ash content obtained, where the first way yield of chitin and ash contentÂ  obtained was higher yield compared to the results obtained of the latter, while the drying process was done would affect water levelsÂ  obtained. In the solubility test, partially chitin produced solved in LiCl or dimethylacetamide. Overall chitin obtained meet the requirements of the specification of commercial chitin. In addition, from the head, the skin of the body and the tail of shrimp the higest chitin content ever found was on the skin of the bodyKey words : Isolation, Characterization, Chitin, and Shrimp WasteÂ ABSTRAKÂ Â Â Â Â Â Â Â Â Â  Kitin adalah biopolimer alami yang tersebar luas di alam dan merupakan senyawa organik kedua setelah selulosa yang sangat melimpah di bumi. Pada umumnya kitin di alam tidak terdapat dalam keadaan bebas, akan tetapi berikatan dengan protein, mineral dan berbagai macam pigmen pada kerangka hewan golongan Arthropoda, Annelida, Molusca, Coelenterata, Nematoda, beberapa kelas serangga serta jamur dan merupakan bagian konstituen organik yang sangat penting. Rata-rata kulit udang mengandung 25-40% protein, 40-50% CaCO3 dan 15-20% kitin, tetapi besarnya kandungan komponen tersebut juga masih tergantung kepada spesies dan habitat. Walaupun kitin tersebar luas di alam, akan tetapi sumber utama yang dapat dimanfaatkan sebagai sumber kitin adalah penggunaan limbah udang. Hal ini dikarenakan limbah udang mudah diperoleh dalam jumlah banyak sehingga dapat diproduksi secara komersial.Tujuan dari penelitian ini adalah untuk mengetahui cara isolasi kitin dari limbah udang dengan proses kimia beserta karakterisasinya dan membandingkan secara terperinci kandungan kitin yang terdapat pada bagian kepala, kulit bagian badan dan ekor udang. Selain itu juga untuk mengetahui pengaruh dari tahapan isolasi kitin terhadap kitin yang dihasilkan. Penelitian ini merupakan penelitian eksperimental dengan melakukan isolasi kitin pada bagian kepala, kulit bagian badan dan ekor udang. Pada tahap awal dilakukan preparasi limbah udang dimana bagian kepala, kulit bagian badan dan ekor udang masing-masing dipisahkan dan dibersihkan, lalu dikeringkan dan digiling. Proses isolasi kitin dilakukan dengan dengan dua cara dimana pada cara pertama tahap deproteinasi dilakukan terlebih dahulu dan berikutnya tahap demineralisasi. Sementara pada cara kedua tahap demineralisasi dilakukan terlebih dahulu, lalu diikuti tahap deproteinasi. Pada tahap deproteinasi menggunakan larutan NaOH 1N dengan perbandingan 1 : 10 (berat sampel kulit udang : NaOH 1N). Proses ini dilakukan pada suhu 65oC selama tiga jam. Sementara pada proses demineralisasi menggunakan larutan HCl 2N dan direndam selama 2 jam dengan perbandingan antara sampel kulit udang dengan HCl yang digunakan adalah 1 : 15. Setelah itu baru dilakukan proses pemutihan. Masing-masing cara dilakukan pengulangan sebanyak dua kali. Hasil Penelitian menunjukkan bahwa perbedaan tahap isolasi kitin yang digunakan ternyata berpengaruh terhadap rendemen hasil dan kadar abu yang didapatkan, dimana pada cara pertama rendemen hasil kitin dan kadar abu yang didapatkan lebih tinggi dibandingkan dengan rendemen hasil yang didapatkan pada cara kedua, sedangkan proses pengeringan yang dilakukan akan berpengaruh terhadap kadar air yang didapatkan. Pada uji kelarutan, kitin yang dihasilkan larut sebagian denganÂ  LiCl atau dimetilasetamida. Secara keseluruhan kitin yang diperoleh memenuhi persyaratan dari spesifikasi kitin niaga. Selain itu dari bagian kepala, kulit bagian badan dan ekor udang kandungan kitin terbanyak terdapat pada kulit bagian badanKata kunci : Isolasi, karakterisasi, kitin, dan limbah udang</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/26</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.26</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 166-178</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/26/25</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mahyudin A. R, Rahmat Yuliandri, Amry Syawaalz</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/27</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
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<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">PEMANFAATAN LIMBAH KECAP KEDELAI DALAM PEMBUATAN NATA DE SOYA</dc:title>
	<dc:creator>Srikandi, Srikandi</dc:creator>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:creator>Hardanto, Sugi</dc:creator>
	<dc:description xml:lang="en-US">Utilization of Waste of Soy Souce Production for Nata de Soya ProductÂ Â Â Â Â Â Â Â  The general objective of the study was to minimize waste of soy sauce production to become food product ofÂ  nata de soya. Bacteria of Acetobacter xylinum were used for the purpose. Specific objective of the study was to determine the composition of materials in producing nata de soya. Three treatments were used in the study namely: 1) six concentration of the waste (0%, 2.5%, 5.0%, 7.5%, 10%, 12,5%), 2) five concentration of sugar (0%, 3%, 6%, 9%, 12%), and 3) two Â concentration of (NH4)2P04 (0%, 0,5%). Each treatment was replicated in three times. Parameters to be measured was the thick and degree of white colour of the nata de soya produced. The completely factorial randomized design was used in the statistical analysis. The results showed that the best composition: the waste 10%, sugar 6% and (NH4)2P04 Â 0,5% Â for the thickness 2,23 cm and white colour degree of Â 37,87%. Â All treatments and the interactions were significantly different for the thickness (P=95%). Â Treatments of waste and sugar were significantly different for degree of white colour,Â  except for (NH4)2P04 treatments were not significantly different (P=95%).Key words : Waste of soy souce, Acetobacter xylinum, Nata de soya, thickness, degree of whiteÂ ABSTRAKÂ Â Â Â Â Â Â  Tujuan umum penelitian adalah Â untuk memanfaatkan Â limbah kecap kedelai menjadi produk makanan nata de soya menggunakan Acetobacter xylinum. Tujuan khusus penelitian ini adalah menentukan komposisi media yang paling tepat untuk pembuatan nata de soya dari limbah kecap kedelai. Pembuatan nata de soya dalam penelitian ini menggunakan Rancangan Acak Lengkap (RAL) factorial dengan 3 perlakuan, yaitu 1) enam konsentrasi limbah kecap (0%, 2,5%, 5,0%, 7,5%, 10%, 12,5%), 2) lima konsentrasi gula (0%, 3%, 6%, 9%, 12%), dan 3) dua konsentrasi (NH4)2P04 (0% dan 0,5%), masing-masing unit perlakuan mendapatkan perlakuan yang sama, diulang sebanyak 3 kali dan dilaksanakan secara serentak. Parameter Â yang diamati dari setiap unit percobaan adalah Â ketebalan dan derajat putih nata. Desain penelitian menggunakan rancangan acak lengkap (RAL) factorial untuk analisis statistik. Hasil penelitian menunjukan bahwa komposisi yang paling baik adalah media dengan limbah kecap 10%, gula 6% dan (NH4)2P04 0,5% dengan ketebalan 2,23 cm dan derajat putih 37,87%. Perlakuan konsentrasi limbah kecap, gula dan (NH4)2P04 dan interaksinya berpengaruh nyata Â terhadap ketabalan nata yang dihasilkan (P=95%). Perlakuan konsentrasi limbah kecap dan gula, mempengaruhi secara nyata derajat putih nata sedangkan untukÂ  perlakuan (NH4)2PO4 tidak mempengaruhi secara nyata (P=95%)Kata kunci : Â Â Limbah Kecap, Acetobacter xylinum, Nata de soya, Ketebalan, Derajat Putih.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/27</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.27</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 179-189</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/27/26</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Srikandi Srikandi, Lilis Sugiarti, Sugi Hardanto</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/28</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
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			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">EMISI FORMALDEHIDA DARI PAPAN LANTAI LAMINA KOMBINASI DENGAN BATANG KELAPA YANG MENGGUNAKAN TANIN RESORSINOL FORMALDEHIDA</dc:title>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:creator>Santoso, Adi</dc:creator>
	<dc:creator>Sugiarti, Sri Wuryani</dc:creator>
	<dc:description xml:lang="en-US">Formaldehyde Emissions from Floor Boards Lamina Combination with The Coconut Bar Using Tanin Resorcinol FormaldehydeÂ Â Â Â Â Â Â Â Â  Trunks of coconut (Cocos nucifera L.) has been widely used as both structural and non structural materials, including home furnishings, furniture, toys, crates, and so on. In the utilization of coconut trunks required special handling to produce a high quality product. How to handle it needs through the process of densification or impregnation by using a copolymer of Tanin Resorcinol Formaldehyde (TRF) inÂ  the vacuum press. In the case to reduce the scarcity of the wood, Â modification between coconut wood with other wood species in laminated floor board products is needed. The research was done by the method of vacuum press in the Laboratory for Products Compound and Wood Preservation, Center Research and Development for Forest Products, Bogor. The tests were performed the Â physical properties consist of specific gravity and moisture content or Â the chemical properties of formaldehyde emissions by using Spectrophotometer. The results indicated that by using TRF copolymer (1: 0.5: 2) and viscosity 0.88 centripoise, formaldehyde emissions of the combination of the wood was very well and meet the requirements ( 0.30 to 0.40 mg / L) and were included in the category of very safe.Keywords : Emissions of formaldehyde, Laminated boards, Trunks of coconut, Tanin resorcinol formaldehydeÂ ABSTRAKÂ Â Â Â Â Â Â Â Â Â Â Â  Batang kelapa (Cocos nucifera L.) telah banyak digunakan baik sebagai bahan struktural maupun non structural, seperti perkakas rumah tangga, mebel, mainan, peti dan lain sebagainya.Â  Dalam pemanfaatannya batang kelapa tersebut diperlakukan penanganan khusus untuk menghasilkan suatu produk yang berkualitas tinggi. Adapun cara penanganannya adalah dapat melalui proses densifikasi ataupun impregnaasi dengan menggunakan suatu kopolimerÂ  Tanin Resorsinol Formaldehida Â menggunakan metode vakum tekan.Â  Dalam hal ini untuk mengurangiÂ  kelangkaan dari kayu tersebut makaÂ Â Â  dilakukan modifikasi antara kayu kelapa dengan jenis kayu lainnya pada produk papan lantai lamina. Untuk itu dilakukan penelitian pengujian dengan metode vakum tekan di Laboratorium Produk Majemuk dan Pengawetan Kayu, Pusat Penelitian dan Pengembangan Hasil Hutan, Bogor . Adapun pengujian yang dilakukan adalah sifat fisika terdiri atas bobot jenis, kadar air, danÂ  sifat kimia Â emisi formaldehida yang diuji dengan menggunakan Spectrophotometer. Hasil penelitian ini menunjukan bahwa dengan menggunakan kopolimer TRFÂ  (1 : 0,5 : 2) dengan kekentalan 0,88 centripoise, emisi formaldehida yangÂ  dihasilkan dari kombinasi kayu tersebut sangat baik dan memenuhi persyaratanÂ  Â (0,30 - 0,40 mg/L) dan termasuk dalam kategori sangat aman.Kata kunci : Emisi formaldehida, Papan lamina, Batang kelapa, Tanin resorsinol formaldehida</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/28</dc:identifier>
	<dc:identifier>10.31938/jsn.v1i2.28</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 1 No. 2 (2011): Sains Natural; 190-200</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v1i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/28/27</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Supriyono Eko Wardoyo, Adi Santoso, Sri Wuryani Sugiarti</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/29</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">ANALISIS SENYAWA GOLONGAN KORTIKOSTEROID SINTETIK DEKSAMETASON DAN PREDNISON) DALAM JAMU SECARA KROMATOGRAFI CAIR KINERJA TINGGI (KCKT)</dc:title>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:creator>Hutagaol, Ricson P.</dc:creator>
	<dc:creator>Achyadi, Tb</dc:creator>
	<dc:description xml:lang="en-US">Synthetic Compounds Analysis of Group Corticosteroids (Dexamethasone and Prednisone) at medicinal Herbs with High Performance Liquid Chromatography (HPLC)Â Â Â Â Â Â Â Â  Additional of chemicals into the traditional medicine is often done to make it an instant potent drug, that can attract customers. The chemicals that often added, one of which is a synthetic corticosteroid groups such as dexamethasone or prednisone. Dexamethasone and prednisone is hard drugs that should be used under a doctor's supervision. The purpose of this study was to analyze the content of the compound of synthetic corticosteroid dexamethasone and prednisone in herbal medicine in Bogor on June of 2011. Samples were taken from the traditional market Ciawi, Bogor. Samples that was taken consisted of herbs stiff, stamina enhancer and appetite enhancer, each sample consist of two brands and was taken twice of sampling. Sampling was conducted in the first week of June and the second sampling conducted during the third week in June where samples were taken from the same brand with a different batch number. Phase analysis included qualitative and quantitative analysis of compounds dexamethasone and prednisone in herbal medicine phase HPLC, using a mixture of deionized water: methanol : acetonitrile with composition 50 : 30 : 20, C18 column and UV-Vis detector at a wavelength of 244 nm. Based on the research, found a compound dexamethasone on ten samples from twelve samples analyzed, respectively by 0.52 mg/g, 0.54mg/g, 1.78 mg/g, 1.79 mg/g, 0 , 59 mg/g, 0.49 mg/g, 0.22 mg/g, 0.22 mg/g, 0.19 mg/g and 0.18 mg/g. The amount of content in different brands of herbal medicine dexamethasone significantly different, whereas the content of dexamethasone on a brand drugs at the time of sampling or a different batch numbers, were not significantly different. In addition to samples A1 and A2 were found dexamethasone, prednisone also found the compound, each 1.56 mg/g and 1.92 mg/g, with prednisone significantly different content.Keywords : Dexamethasone, Prednisone, Corticosteroid, HPLCÂ ABSTRAKÂ Â Â Â Â Â Â Â Â Â  Penambahan bahan kimia ke dalam obat tradisional sering kali dilakukan untuk membuat obat tersebut menjadi manjur secara instan, sehingga dapat menarik minat konsumen. Bahan kimia yang biasa ditambahkan salah satunya adalah golongan kortikosteroid sintetik seperti deksametason atau prednison. Deksametason dan prednison merupakan obat keras yang penggunaannya harus dalam pengawasan dokter. Tujuan penelitian ini adalah menganalisis kandungan senyawa golongan kortikosteroid sintetik deksametason dan prednison dalam jamu yang beredar di kota Bogor pada bulan Juni tahun 2011. Sampel diambil dari pasar tradisional Ciawi, Bogor. Sampel yang diambil terdiri dari jamu pegal linu, penambah stamina dan penambah nafsu makan, masingâ€“masing terdiri dari dua merek dan diambil sebanyak dua kali sampling. Sampling pertama dilakukan pada minggu pertama bulan Juni dan sampling kedua dilakukan pada minggu ketiga bulan Juni dimana sampel diambil dari merek yang sama dengan nomor batch yang berbeda. Tahap analisis meliputi analisis kualitatif maupun kuantitatif senyawa deksametason dan prednison dalam jamu secara KCKT, menggunakan fase gerak campuran dari air deionisasi : metanol : asetonitril dengan komposisi 50 : 30 : 20, kolom C18 dan detektor UV â€“ Vis pada panjang gelombang 244 nm. Berdasarkan penelitian, ditemukan adanya senyawa deksametason pada sepuluh sampel dari dua belas sampel yang dianalisis, masing â€“ masing sebesar 0,52 mg/g, 0,54 mg/g, 1,78 mg/g, 1,79 mg/g, 0,59 mg/g, 0,49 mg/g, 0,22 mg/g, 0,22 mg/g, 0,19 mg/g dan 0,18 mg/g. Besarnya kandungan deksametason dalam berbagai merek jamu berbeda secara nyata, sedangkan kandungan deksametason pada suatu merek obat pada waktu sampling atau nomor batch yang berbeda, tidak berbeda nyata. Pada sampel A1 dan A2 selain ditemukan deksametason, juga ditemukan adanya senyawa prednison, masing â€“ masing 1,56 mg/g dan 1,92mg/g, dengan kandungan prednison yang berbeda nyata.Kata Kunci : Deksametason, Prednison, Kortikosteroid, KCKT</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/29</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.29</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 1-11</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/29/28</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Lilis Sugiarti, Ricson P. Hutagaol, Tb Achyadi</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/30</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">POLLEN ATAU SERBUK SARI : ASPEK MORFOLOGI, SISTEMATIKA DAN APLIKASINYA PADA TUMBUHAN KELUARGA MENTOL</dc:title>
	<dc:creator>Sudarmono, Sudarmono</dc:creator>
	<dc:creator>Sahromi, Sahromi</dc:creator>
	<dc:description xml:lang="en-US">Pollen Powder or Sari : Aspects of Morphology, Systematics and Application on Menthol Family PlantÂ Â Â Â Â Â Â Â Â  Pollen is the important component of plant to develop through reproductive. Pollen is the male organ of plants that plays an important role in the process of the evolution of plants. Menthol family plants (the Family Lamiaceae) is one of biggest families after Asteraceae. The process of the cross breeding often dominates the process of the evolution to the ment al Family. The research on the menthol Family's pollen aimed to know the affinity and the process of his pollination. The form of pollen of the Family Lamiaceae, was round and hexacolpate, the form was the same as the species member with their relatives. In the process of pollination often helped by the bee where pollen that clung to the abdomen part and the chest of the bee and moved to the other flower where the cross-pollination happen. The process of the cross-pollination happened also because of the same of maturity time between pollen of male and the stigma surface of female. The seed was still being the dominant factor in the reproductive in the Family Lamiaceae. Key words : Pollen, Pollination, Lamiaceae, the Mint family, the bee, the seedÂ AbstrakÂ Â Â Â Â Â Â Â Â  Serbuk sari atau dikenal dengan pollen merupakan komponen penting tanaman untuk berkembang melalui reproduktif. Serbuk sari merupakan organ jantan pada tumbuhan yang berperan penting dalam proses evolusi tumbuhan. Tumbuhan Keluarga Mentol (Famili Lamiaceae) merupakan salah satu Famili yang terbesar setelah Asteraceae. Proses perkawinan silang banyak mendominasi proses evolusi pada Keluarga Mentol. Penelitian terhadap serbuk sari Keluarga Mentol bertujuan untuk mengetahui kekerabatan dan proses penyerbukannya. Bentuk morfologi serbuk sari pada Famili Lamiaceae, yaitu bulat dan heksakolpat (hexacolpate), bentuk yang sama dengan jenis â€“ jenis anggota Famili Lamiaceae. Pada proses penyerbukan banyak dibantu oleh lebah dimana pollen yang menempel pada bagian perut dan dada lebah penyerbuk dan berpindah pada bunga yang lain sehingga terjadi penyerbukan silang. Proses penyerbukan silang terjadi juga karena adanya waktu pemasakan yang sama antara serbuk sari sebagai organ jantan dan kepala putik sebagai organ betina. Biji masih merupakan faktor yang dominan pada perbanyakan Famili Lamiaceae.Kata kunci : Serbuk sari, Pollen, Lamiaceae, Keluarga Mentol, Lebah, biji.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/30</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.30</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 12-16</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/30/29</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Sudarmono Sudarmono, Sahromi Sahromi</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/31</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">MODEL ISOTERM FREUNDLICH DAN LANGMUIR OLEH ADSORBEN ARANG AKTIF BAMBU ANDONG (G. verticillata (Wild) Munro) DAN BAMBU ATER (G. atter (Hassk) Kurz ex Munro)</dc:title>
	<dc:creator>Murtihapsari, Murtihapsari</dc:creator>
	<dc:creator>Mangallo, Bertha</dc:creator>
	<dc:creator>Handyani, Dini Dwi</dc:creator>
	<dc:description xml:lang="en-US">Freundlich and Langmuir IsothermsÂ ModelÂ byÂ Active Chorcoal Adsorbent Bamboo Andong Â (G. verticillata (Wild) Munro) and Bamboo Ater (G. atter (Hassk) Kurz ex Munro)Â Â Â Â Â Â Â Â Â  DiazinonÂ insecticideÂ adsorptionÂ byÂ twoÂ types of adsorbent, namely activated charcoal bamboo andong (G.Â verticillataÂ (Wild)Â Munro)Â andÂ bambooÂ ater (G. atter (Hassk) Kurzex Munro) atÂ optimumÂ conditions determined the maximum adsorption capacity of both types of adsorbent. DataÂ analysison the effect ofÂ concentrationÂ onÂ the adsorption capacity was used Langmuir and Freundlich isotherms equation. It was obtained. That Â theÂ curve of adsorption isotherms ofÂ the Langmuir isotherm better modeled with linear regression coefficients were relatively more approach 1 is R2 = 0,996 for both types of adsorbents. Langmuir isotherm equation obtained from adsorpsi maximum capacity of activated charcoal bamboo andong (G. verticillata (Wild) Munro) of Â 4.630Â mg/g (1,433.10-5Â mol/g) with K = 0,332 (Kmol/L)-1Â and Eads at -2,750 kJ/mol, while theÂ activated charcoalÂ bambooÂ ater (G. atter (Hassk) Kurzex Munro)Â produce the maximum adsorptionÂ capacityÂ of 1,786 mg/g (5,868.10-6 mol/g) with K = 0,202 (Kmol/L)-1 and Eads = -3,898 kJ/mol, so the adsorption ofÂ both types ofÂ adsorbentsÂ indicated experiencing aÂ physicalÂ adsorptionÂ (physisorptionÂ /Â fisisorpsi).Keyword:Â G.Â verticillataÂ (Wild)Â Munro,Â G.Â atterÂ (Hassk)Â KurzÂ exÂ Munro,Â Adsorption, Diazinon,Â  activedÂ charcoalÂ  ABSTRAKÂ Â Â Â Â Â Â Â Â  Adsorpsi insektisida diazinon oleh dua jenis adsorben, yaitu arang aktif bambu andong (G. verticillata (Wild) Munro) dan bambu ater (G. atter (Hassk) Kurz ex Munro) pada kondisi optimum bertujuan untuk menentukan kapasitas adsorpsi maksimum dari kedua jenis adsorben. Analisis data pengaruh konsentrasi terhadap kapasitas adsorpsi digunakan persamaan isoterm Langmuir dan Freundlich. Berdasarkan data yang diperoleh, kurva isoterm adsorpsi lebih mengikuti model isoterm Langmuir dengan koefisien regresi linier yang relatif lebih mendekati 1 yaitu R2 = 0,996 untuk kedua jenis adsorben. Dari persamaan isoterm Langmuir diperoleh kapasitas adsorpsi maksimum arang aktif bambu andong (G. verticillata (Wild) Munro) sebesar 4,630 mg/g (1,433.10-5 mol/g) dengan K = 0,332 (Kmol/L)-1 dan Eads sebesar -2,750 kJ/mol, sedangkan arang aktif bambu ater (G. atter (Hassk) Kurz ex Munro) menghasilkan kapasitas adsorpsi maksimum sebesar 1,786 mg/g (5,868.10-6 mol/g) dengan K = 0,202 (Kmol/L)-1 dan Eads = -3,898 kJ/mol, sehingga adsorpsi kedua jenis adsorben diindikasikan mengalami adsorpsi secara fisik (physisorption/ fisisorpsi).Kata kunci : G. verticillata (Wild) Munro, G. atter (Hassk) Kurz ex Munro Adsorpsi, Diazinon, Arang aktif</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/31</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.31</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 17-23</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/31/30</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Murtihapsari Murtihapsari, Bertha Mangallo, Dini Dwi Handyani</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/32</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">VALIDASI METODE PENETAPAN KADAR CYANOCOBALAMIN SECARA SPEKTROFOTOMETRI VISIBEL DOUBLE BEAM</dc:title>
	<dc:creator>Hutagaol, Ricson P.</dc:creator>
	<dc:creator>Niken, Niken</dc:creator>
	<dc:description xml:lang="en-US">Validation of Determination Method of Cyanocobalamin Content by Visible Double Beam SpectrophotometryÂ Â Â Â Â Â Â Â Â Â Â  Validasion of new modification of or method, must be done before the validity of methods and tools used. A valid method will give accurate results so as to guarantee the quality of drugs. The increasing demand from consumers will need increasing vitamin B12, so need more validation methods of cyanocobalamin in the Â tablet dosage. Analysis of the studied parameter of linearity, accuracy, precision, robustness, specificity, and ranges. Analysis of cyanocobalamin is using a strong base anionic exchange resin for separation techniques in order to obtain pure cyanocobalamin, pure cyanocobalamin obtained after measuring through visible double beam spectrophotometry. The results of this validation of all parameters meet the requirements and acceptance criteria. Linearity parameter obtained resultes of the correlation coefficient (r) = 0,999 (minimum 0,98). Accuracy parameter of the results abtained between 98,12% - 99,44% (requirements between 98% - 102%). Precision parameter (repeatability method) obtained relative standard deviation (RSD) between 0,25% - 0,38% (requirements is less than 2%). Intermediate precision parameters between SBR obtained 0,00% (requirements is less than 2%). Robustness parameters obtained 98,24% recovery and RSD was 0,00% (requirements is between 98% - 102%) recovery and RSD less than 2% (mets the requirements). Specificity parameters obtained that the sample matrix did not affect the results of the analysis, so it could be concluded that the validation of method determination of cyanocobalamin measure was valid.Key words : Method validation, cyanocobalamin, resin, spectrophotometry.Â ABSTRAKÂ Â Â Â Â Â Â Â Â  Menurut Harmita (2004), metode yang baru atau mengalami modifikasi, sebelum digunakan untuk penetapan rutin harus dilakukan validasi metode terlebih dahulu agar dapat diketahui keabsahan metode dan alat yang digunakan. Metode yang valid akan memberikan hasil yang akurat sehingga dapat menjamin mutu obat. Semakin meningkatnya permintaan dari konsumen akan kebutuhan vitamin B12 (cyanocobalamin), maka perlu dilakukan validasi metode terhadap kadar cyanocobalamin dalam sediaan tablet. Parameter analisis yang diteliti yaitu linieritas, akurasi, presisi, ketegaran, spesifisitas, dan rentang. Analisis cyanocobalamin ini menggunakan resin penukar anionik basa kuat untuk teknik pemisahan agar didapatkan cyanocobalamin murni, setelah didapatkan cyanocobalamin murni maka kadarnya dapat diukur secara spektrofotometri visible double beam. Hasil penelitian dari seluruh parameter validasi ini memenuhi persyaratan dan sesuai kriteria penerimaan. Parameter linieritas didapatkan hasil koefisien korelasi (r) = 0,999 sesuai persyaratan yaitu minimum 0,98. Parameter akurasi didapatkan hasil % recovery diantara 98,12% - 99,44% sesuai persyaratan yaitu diantara 98% - 102%. Parameter presisi (kedapatulangan metode) didapatkan hasil simpangan baku relatif (SBR) diantara 0,25% - 0,38% sesuai persyaratan yaitu lebih kecil dari 2%. Parameter presisi antara didapatkan SBR 0,00% sesuai persyaratan yaitu lebih kecil dari 2%. Parameter ketegaran didapatkan hasil % recovery 98,24% dan SBR 0,00% sesuai persyaratan yaitu % recovery diantara 98% - 102% serta SBR lebih kecil dari 2% dengan demikian parameter rentang juga memenuhi persyaratan. Parameter spesifisitas diperoleh hasil bahwa matriks sampel tidak mempengaruhi hasil analisis, sehingga dapat disimpulkan bahwa validasi metode penetapan kadar cyanocobalamin adalah valid.Kata kunci : Validasi metode, cyanocobalamin, resin, spektrofotometri.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/32</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.32</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 24-34</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/32/31</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Ricson P. Hutagaol, Niken Niken</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/33</identifier>
				<datestamp>2023-11-29T01:27:00Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">OPTIMALISASI KADAR ABU DALAM PEMBUATAN MINYAK JARAK PAGAR TERVULKANISASI</dc:title>
	<dc:creator>Puspitasari, Santi</dc:creator>
	<dc:creator>Handayani, Hani</dc:creator>
	<dc:creator>Melinda, R. Siti Noviani</dc:creator>
	<dc:creator>Syamsu, Yoharmus</dc:creator>
	<dc:description xml:lang="en-US">Optimization of Ash Content on the Synthesize of Vulcanized Jarak Pagar (Jatropha curcas) OilÂ Â Â Â Â Â Â Â  Developments in the preparation of rubber compound formulations should be followed by a rubber compounder, especially in modifying the formula. Rubber compound composed of rubber as an elastomer and its chemical. Each ingredient has a specific function and influence to the properties of rubber articles. The research studied the formulation of vulcanized oil of Jatropha curcas to obtain the best quality in terms of ash content. The experiment begins with the characterization of Jatropha curcas oil and testing of ash content of each component in the formulation of vulcanized Jatropha curcas oil. The results was used as the basis for formulation of vulcanized Jatropha curcas oil components. Vulcanized Jatropha curcas oil was synthesized at the laboratory scale (100 g oil / batch) at 140OC temperature, agitation speed of 100 rpm, and the variation of dose Na2CO3 and ZnO (0.25; 0.50, and 0.75 pho). Vulcanized Jatropha curcas oil obtained were analyzed for visualization of physical and chemical properties. The experimental results showed that the lowest of ash content of vulcanized Jatropha curcas oil was of 1.24% obtained from the reaction by the addition of 0,25 pho of Na2CO3 and 0,50 pho of ZnO. This dose was defined as the optimal dose because it gived the ash content that meets the requirements of commercial vulcanized oil (max 1.5%).Keywords: Rubber compound, elastomer, Jatropha curcas oilÂ ABSTRAKÂ Â Â Â Â Â Â  Perkembangan teknik formulasi dalam penyusunan kompon karet harus dapat diikuti oleh rubber compounder terutama dalam memodifikasi formula tersebut. Kompon karet tersusun atas karet sebagai elastomer dan bahan kimianya. Setiap bahan kimia karet memiliki fungsi dan pengaruh yang spesifik terhadap sifat barang jadi karet. Pada penelitian ini dipelajari formulasi bahan dalam pembuatan minyak tervulkanisasi agar diperoleh mutu terbaik ditinjau dari segi kadar abu. Percobaan diawali dengan karakterisasi minyak jarak pagar dan pengujian kadar abu setiap komponen dalam formulasi minyak jarak pagar tervulkanisasi. Hasilnya digunakan sebagai dasar penyusunan formulasi komponen minyak jarak pagar tervulkanisasi. Minyak jarak pagar tervulkanisasi dibuat pada skala laboratorium (100 g minyak/batch) pada suhu 140oC, kecepatan pengadukan 100 rpm, dan variasi dosis Na2CO3 serta ZnO (0,25; 0,50; dan 0,75 bsm). Minyak jarak pagar yang diperoleh dianalisis visualisasi fisik dan sifat kimianya. Hasil percobaan menunjukkan bahwa kadar abu minyak jarak pagar tervulaknisasi terendah sebesar 1,24% diperoleh dari reaksi dengan penambahan 0,25 bsm Na2CO3 dan 0,50 bsm ZnO. Dosis ini ditetapkan sebagai dosis optimal karena memberikan kadar abu yang memenuhi persyaratan minyak nabati tervulkanisasi komersial (maks 1,5%).Kata kunci: Kompon karet, elastomer, minyak jarak pagar</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/33</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.33</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 35-46</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/33/32</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Santi Puspitasari, Hani Handayani, R. Siti Noviani Melinda, Yoharmus Syamsu</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/35</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">ISOLASI DAN ELUSIDASI SENYAWA ALKALOID DALAM  BIJI MAHONI (Swietenia mahagoni Jacq)</dc:title>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Lusiana, Helen</dc:creator>
	<dc:creator>Farobie, Obie</dc:creator>
	<dc:description xml:lang="en-US">Isolation and Structure Elucidation of Alkaloid Compounds of Mahoni Seed (Swietenia mahagoni Jacq) Â Â Â Â Â Â Â Â Â  Along with rising of the term â€˜back to natureâ€, many people have been using traditionally medicinal plants to overcome variety of diseases. Swietenia mahagoni Jacq seeds have potency to treat various diseases including high blood diseases, diabetes, rheumatism, fever, colds, and eczema. This study aimed to isolate and identify the alkaloid compounds found in mahogany seeds (Swietenia mahagoni Jacq). This research was conducted in 3 stages, namely the sample extraction by using methanol and acetic acid, determining the best eluent by using thin-layer chromatography and column chromatography and characterization of compounds by using UV, FTIR, 1H NMR and 13C NMR spectrophotometer. The best eluent from this research was chloroform : methanol with ratio of 90:10 and 95:5. Result of phytochemical test with Mayer and Dragendorf reagent showed that crude extract of mahoni contain alkaloid compound. Results of structure elucidation with UV, FTIR, 1H NMR, and 13C was assumed that alkaloid compound contained in mahoni was 3,6,7-trimethoxy-4-methyl-1,2,3,4-tetrahydroisoquinoline.Keywords : alkaloid compounds, Swietenia mahagoni Jacq, structure elucidation, chromatoghraphyÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Seiring dengan meningkatnya semangat â€œback to nature &quot;, banyak orang telah menggunakan tanaman obat tradisional untuk mengatasi berbagai penyakit. Biji Swietenia mahagoni Jacq berpotensi untuk mengobati berbagai penyakit termasuk penyakit darah tinggi, diabetes, rematik, demam, pilek, dan eksim. Penelitian ini bertujuan untuk mengisolasi dan mengidentifikasi senyawa alkaloid yang terdapat dalam biji mahoni (Swietenia mahagoni Jacq). Penelitian ini dilakukan dalam 3 tahap, yaitu ekstraksi sampel dengan menggunakan metanol dan asam asetat, menentukan eluen terbaik dengan menggunakan kromatografi lapis tipis dan kromatografi kolom, dan karakterisasi senyawa dengan menggunakan instrumen spektrofotometer UV, FTIR, 1H NMR dan 13C NMR, dan GC-MS. Eluen terbaik dari penelitian ini adalah kloroform: metanol dengan rasio 90:10 dan 95:5. Hasil uji fitokimia dengan pereaksi Mayer dan Dragendorf menunjukkan bahwa ekstrak kasar biji mahoni mengandung senyawa alkaloid. Hasil elusidasi struktur molekul diduga bahwa senyawa alkaloid yang terkandung dalam biji mahoni (Swietenia mahagoni Jacq) adalah 3,6,7-trimetoksi-4-metil-1,2,3,4-tetrahydroisoquinoline.Keywords : senyawa alkaloid, biji mahagoni Jacq, struktur elusidati, kromatografi</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/35</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.35</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 59-69</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/35/33</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mamay Maslahat, Helen Lusiana, Obie Farobie</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/36</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">PERSENTASE TOTAL AKTIVITAS ANTIOKSIDAN DARK CHOCOLATE DAN MILK CHOCOLATE SECARA SPEKTROFOTOMETRI</dc:title>
	<dc:creator>Nurhayati, Lany</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:creator>Rosita, Rika</dc:creator>
	<dc:description xml:lang="en-US">Percentage Total Â Activities of Antioxidant of Dark Chocolate and Milk Chocolate Using SpectrofotometricÂ Â Â Â Â Â Â Â Â  Chocolate is loaded with various properties, one of them as an antioxidant because it contains katetin, polyphenols, flavonoids that can prevent premature aging. The content of antioxidants in chocolate was varied, dark chocolate (DC) of at least 70 %, while milk chocolate (MC) is was lower. The compound of 1,1-diphenyl-2-picrylhydrazyl (DPPH) was a stable free radical compounds that would neutralize each other if treated with antioxidant compound. Percentage of total activity was calculated by the reaction between DPPH compounds and chocolate spectrophotometrically at Î» 520nm. The results showed that the DC brand A was 59.19 % , 17 : brand B 16 % and brand C 8.80 % , while the MC was 11, 07 % brand A, brand B 7, 00 %Â  and brands C 5.84 %. Comparison of DC percentages was higher than MC because the DC contains catechins, riboflavon, vitamin E and vitamin C or minerals Mg and Cu that reacted with DPPH, so that DC could be used as one source of antioxidants.Keywords : antioxidants, dark chocolate, milk chocolate, DPPH .Â ABSTRAKÂ Â Â Â Â Â Â Â Â  Cokelat sarat dengan berbagai macam khasiat,Â  salah satunya sebagai antioksidan karena mengadung katetin, polifenol, flavonoid yang dapat mencegah penuaan dini. Kandungan antioksidan dalam coklat bervariasi Dark chocolate (DC) minimal 70% sedangkan Milk chocolate (MC) lebih rendah. Senyawa 1,1-diphenyl-2-picrylhydrazyl (DPPH) merupakan senyawa radikal bebas stabil yang akan saling menetralkan jika direaksikan dengan senyawaan antioksidan. Persentase total aktifitas dihitung melalui reaksi antara senyawa DPPH dengan cokelat secara spektrofotometri pada Î» 520nm. Hasil penelitian menunjukkan bahwa DC merk A sebesar 59.19%, merk B 17.16%, dan merk C 8.80%, sedangkan MC merk A sebesar 11.07%, merk B 7.00%, dan merk C 5.84%. Perbandingan persentase DC lebih tinggi dibanding MC karena DC mengandung katekin, riboflavon, vitamin E, dan vitamin C, serta mineral Mg dan Cu yang berekasi dengan DPPH, sehingga DC dapat dijadikan sebagai salah satu sumber antioksidan.Kata kunci : antioksidan, dark chocolate, milk chocolate, DPPH.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/36</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.36</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 70-80</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/36/34</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Lany Nurhayati, Supriyono Eko Wardoyo, Rika Rosita</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/37</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">PENGARUH MUTILASI DAN ABLASI TERHADAP MOLTING KEPITING BAKAU (Scylla Serrata) SEBAGAI KEPITING LUNAK</dc:title>
	<dc:creator>Khairiah, Khairiah</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:creator>Wahid, Pasril</dc:creator>
	<dc:description xml:lang="en-US">Effect of Mutilation and Ablation to Molting of Mangrove Crab (Scylla serrata) as Soft CrabÂ Â Â Â Â Â Â Â Â  Soft crabs that are more expensive than regular crab, that having hard carapace, in nature and in culture are very difficult to find. This study aimed to get the soft crabs more easily controlled the numberÂ  of molting in culture, by the method of mutilation and ablation. Thus the supply in market will be able to meet existing demand. Four treatment techniques had been implemented namely mutilation, ablation, ablation + mutilation, and controls which each performed four replications. Complete Randomized Desaign (CRD) was used because the experiment was conducted in a fairly homogeneous patch of tambak pond. Experimental unit in the form of bamboo pen cages with the size of 2x1x1m filled with 20 crabs. Â All experimental crabs were ready for molting (dark color) even with 40-90 g of varied sizes. The results showed that each week until the third week, the average number of crabs per unit experiment with techniques of mutilation was always having highest of molting number, respectively 1.00, 3.25, and 11.00 crabs and having the lowest mortality rate, respectivelyÂ  0. 25, 1.75, and 1.25 crabs, compared with the ablation, mutilations + ablation technique, and control. StatisticallyÂ  four treatments in molting, in week two andÂ  three was significantly different , eventhough in mortality was not (Î± = 5%).Keywords : mangrove crab (Scilla serrata), soft crabs, mutilation, ablationÂ ABSTRAKÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â  Kepiting lunak yangÂ  harganya lebih mahal dari kepiting biasa bercangkang keras, di alam maupun dalam budidaya sangat susah ditemukan. Â Penelitian ini bertujuan untuk mendapatkan kepiting lunak yang lebih mudah terkontrol jumlahnya dalam budidaya, dengan metoda mutilasi dan ablasi.Â  Dengan demikian dalamÂ  pasar ketersediaannya akan dapat memenuhi permintaan yang ada. Empat perlakuan telah dilaksanakan yaitu teknik mutilasi, ablasi, mutilasi+ablasi, dan kontrol dengan masing-masing dilakukan empat kali ulangan. Rancangan Acak Lengkap (RAL) digunakan karena percobaan ini dilakukan di suatu petak tambak yang cukup homogen. Unit percobaan berupa keramba bambu tancap ukuran 2x1x1m yang diisi 20 kepiting yang semua kepiting dalam percobaan siap molting (warnanya gelap) meskipun dengan ukuran yang bervariatif 40-90 g. Hasil penelitian menunjukan bahwa tiap minggu sampai pada minggu ke tigaÂ  rata-rata jumlah kepiting per unit percobaan dengan teknik mutilasi selalu tertinggi terjadinya proses molting yaitu masingâ€“masing 1,00; 3,25; dan 11,00 ekor dan mortalitasnya terendah yaitu 0,25; 1,75; dan 1,25 ekor dibanding dengan teknik ablasi, mutilasi+ablasi; dan kontrol.Â  Secara statistik ke empat perlakuan dalam molting pada minggu ke dua dan ke tiga berbeda nyata hasil terbaik ditunjukkan oleh perlakuan mutilasi, meskipun dalam mortalitas tidakÂ  berbeda nyata (selang kepercayaan 95 %).Kata Kunci : Kepiting bakau (Scilla serrata), kepiting lunak, mutilasi, ablasi.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/37</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.37</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 81-91</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/37/35</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Khairiah Khairiah, Supriyono Eko Wardoyo, Pasril Wahid</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/38</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">UJI CEMARAN BAKTERI DAN CENDAWAN PADA KEJU KASAR (Cheddar)</dc:title>
	<dc:creator>Srikandi, Srikandi</dc:creator>
	<dc:description xml:lang="en-US">Contamination Test of Bacteria and Fungi on Rough Cheese (Cheddar)Â Â Â Â Â Â Â Â  Foodstuffs such as cheese as a source of nutrition for humans, is also a food source for microorganisms. The growth of microorganisms in foodstuffs can cause adverse or beneficial change. Quality cheese can be seen from the presence of bacteria and mildew stains on the cheese samples. This study aimed to determine quantitatively the presence of bacteria and fungi in ten samples of coarse cheese (Cheddar) from five traditional markets in Bogor. Testing performed at the microbiology laboratory a contamination of bacteria of Salmonella sp and Listeria monocytogenes and yeast. The research resultsÂ  from ten samples of coarse cheese (Cheddar) had stain of pathogenic bacteria of Listeria monocytogenes and Salmonella sp Based on standar method of SNI 19-2897 â€“ 1992 was negative/25g of sampel or mold and yeast was &amp;lt;10 cfu / g. Sample Zt was concluded that no contamination and Save to be consumend.Â  Key words :Â  Cheese (Cheddar), Bacteri and FungiÂ ABSTRAKÂ Â Â Â Â Â Â  Bahan makanan seperti keju selain merupakan sumber gizi bagi manusia, juga merupakan sumber makanan bagi mikroorganisme. Pertumbuhan mikroorganisme dalam bahan pangan dapat menyebabkan perubahan yang merugikan atau menguntungkan. Kualitas keju dapat dilihat dari keberadaan cemaran bakteri dan cendawan, pada sampel keju. Penelitian ini bertujuan untuk mengetahui secara kuantitatif keberadaan bakteri dan cendawan pada sepuluh sampel keju kasar (Cheddar) dari lima pasar tradisional di Bogor. Pengujian dilakukan di laboratorium mikrobiologi berupa uji cemaran bakteri Salmonella sp, Listeria monocytogenes danÂ  cendawan. Data hasil penelitian dari sepuluh sampel keju kasar (Cheddar) diantaranya untuk cemaran bakteri patogen Salmonella sp dan Listeria monocytogenes berdasarkan metode SNI 19-2897-1992 hasilnya yaitu negatif/25g serta kapang dan khamir hasilnya &amp;lt; 10 cfu/g sehingga nilai cemaranÂ  mikroba dikatan memenuhi standar dan layak untuk dikonsumsi.Kata kunci :Â Â  KejuÂ  (Cheddar), Bakteri dan Cendawan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/38</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.38</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 92-100</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/38/36</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Srikandi Srikandi</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/39</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">ANALISIS CLUSTER TERHADAP SPEKTRA INFRAMERAH FENOL, POLIEUGENOL DAN INTERAKSI KEDUANYA SEBUAH TINJAUAN STATISTIK</dc:title>
	<dc:creator>Kiswandono, Agung Abadi</dc:creator>
	<dc:description xml:lang="en-US">Cluster Analisysis of Phenol Infrared Spectra, Poliugenol and Both Interction Overview StatisticsÂ Â Â Â Â Â Â Â Â  Identification had been carried out for eight different compounds using infrared spectrophotometer are phenol, polieugenol, and the mole ratio of phenol and polieugenol, and the results were analyzed using cluster analysis. The purpose of this study was to obtain infrared absorption on the interaction of these compounds, determine their group based on infrared absorption spectra and determine the characteristics of the resulting cluster. The results showed that the cluster analysis on the basis of infrared spectra could be grouped into three clusters, cluster compounds that had moderate absorption, low absorption and high absorption.Keyword : cluster, polyeugenol, phenolÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Delapan jenis senyawa telah diidentifikasi menggunakan spektrofotometer inframerah, yaitu fenol, polieugenol dan perbandingan mol fenol dan polieugenol, lalu hasil identifikasi tersebut dilakukan analisis menggunakan analisis cluster untuk memperoleh hubungan interaksi serapan inframerah pada senyawa â€“ senyawa tersebut, kemudian mengelompokkan jenis senyawa â€“ senyawa tersebut Â berdasarkan serapan spektra inframerahÂ  serta mengetahui ciri â€“ ciri cluster yang dihasilkan. Berdasarkan jenis serapan spektra inframerah, hasil analisis cluster dariÂ  delapan jenis senyawa dapat dikelompokkan menjadi tiga cluster, yaitu cluster senyawa yang mempunyai serapan sedang, cluster senyawa yang memiliki serapan rendah dan cluster senyawa yang memiliki serapan tinggi.Kata kunci : cluster, polieugenol, fenol</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/39</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i1.39</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 1 (2012): Sains Natural; 47-58</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/39/37</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Agung Abadi Kiswandono</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/40</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">ANALISIS PROKSIMAT DAN KEKUATAN GEL AGAR â€“ AGAR DARI RUMPUT LAUT KERING PADA BEBERAPA PASAR TRADISIONAL</dc:title>
	<dc:creator>Yuliani, Nia</dc:creator>
	<dc:creator>Maulinda, Noviana</dc:creator>
	<dc:creator>Sutamihardja, RTM</dc:creator>
	<dc:description xml:lang="en-US">Proximate and Gel Strenght Analysis of Agar from Dry Seaweed in some Traditional MarketsÂ Â Â Â Â Â Â Â Â  Seaweeds are good material in processing to intermedite and finish product like agar â€“ agars Â in Indonesia still in a semi-modern and traditional methods. This led Indonesia still make import the agar gelatin from other countries. The purpose of the study was to increas use the dried seaweed in traditional markets for the products of gelatin and to provide the nutrition information, like water content, ash content, crude fat, protein, carbohydrates, crude fiber, the levels of sulfate and gel strength of processed gelatin from dry seaweed. Dried seaweed used in this study, obtained from a traditional market in Bogor, Bekasi and Jakarta. Proximate result and the gel strength from extracted agar powder samples would compared with commercial flour agar. Research results obtained extracted agar â€“ agar powder samples had lower chemical content and gel strength than the commercial agar, but it still could be used as food, although in very small amounts.Keywords : dry seaweeds, proximate analysis, gel strength, agar â€“ agar Â ABSTRAKÂ Â Â Â Â Â Â Â Â  Pengolahan rumput laut menjadi bahan olahan seperti agar â€“ agar di Indonesia masih secara tradisional dan semi modern. Hal ini menyebabkan Indonesia masih mengimpor agar â€“ agar dari negara lain. Manfaat dan tujuan penelitian ini adalah memanfaatkan rumput laut kering yang banyak terdapat di pasar â€“ pasar tradisional menjadi produk agar â€“ agar dan memberikan informasi kandungan nutrisi yang berupa air, abu, lemak kasar, protein, karbohidrat, serat kasar, kadar sulfat serta kekuatan gel dari agar â€“agar hasil olahan rumput laut kering. Rumput laut kering yang digunakan pada penelitian ini, diperoleh dariÂ  pasar tradisional di Bogor, Bekasi dan Jakarta. Hasil proksimat dan kekutan gel dari sampel tepung agar â€“ agar hasil ekstrak kemudian dibandingkan dengan tepung agar â€“ agar komersial berdasarkan hasil penelitian diperoleh sampel tepung agar â€“ agar hasil ekstraksi dengan kandungan kimia dan kekuatan gel yang lebih rendah dari agar â€“ agar komersial, tetapi masih dapat dimanfaatkan sebagai bahan pangan walaupun dalam jumlah yang sedikit.Kata kunci : rumput laut kering, analisis proksimat, kekuatan gel, agar â€“ agar</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/40</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i2.40</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 2 (2012): Sains Natural (Edisi Khusus); 101-115</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/40/38</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Nia Yuliani, Noviana Maulinda, RTM Sutamihardja</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/41</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">ANALISIS PERTUMBUHAN DAN HASIL TANAMAN SUNGKAI (Peronema canescens Jack.) DI KALIMANTAN</dc:title>
	<dc:creator>Wahyudi, Wahyudi</dc:creator>
	<dc:creator>Muttaqin, Zainal</dc:creator>
	<dc:creator>Mojiol, A. Russel</dc:creator>
	<dc:description xml:lang="en-US">Growth and Yield Analysis of Peronema canescens Jack. in KalimantanÂ Â Â Â Â Â Â Â Â  Sungkai (Peronema canescens) is a native and local species and one of some commercial trees which has a good prospect to be developed in timber estate in Kalimantan.This research was aimed to analyse sungkai plantation, neither the living percentage, productivity, economic cutting cycle, and also its profit. The data analysis was using the average of trees diameter, high and volume, mean annual increment, polynomial equation modelling and financial analysis i.e. net present value (NPV), benefit cost ratio (BCR) and internal rate of return (IRR). The research had been conducted at the community plantation in Kapuas District, Central Kalimantan Province since 1998 to 2010.Â  The result of this research showed that living trees precentage at 12 years old was 89.7%, mean annual increment and its density were 10,14 m3 ha-1Â  and 997 tree/ha respectively. Equation modelling of sungkai plantation was y = 2,073 + 1,6623x - 0,0165x2 (R2= 84,05%). In the bank rate of 9% per year, the economic cutting cycle of this plantation was 15 years with net present value was NPV 58,49 million per ha. BCR 7,64 and IRR 11,75 If the bank rate of 6% and 12% per year, then net present value at the 15 years were NPV 92.65 and 36.6 million per ha respectively. The sangtein was suitable as timber estate and to increase the productivity of former shifting cultivation, scru, and low potential forests which were widespread, especially in Kalimantan.Keywords :Â  Growth and yield, mean annual increment, Peronema canescens, economic cutting cycleÂ ABSTRAKÂ Â Â Â Â Â Â  Sungkai adalah jenis tanaman komersial lokal dan asli yang mempunyai prospek baik untuk dikembangkan dalam hutan tanaman Kalimantan. Penelitian ini bertujuan untuk mengetahui prosen hidup, produktivitas, siklus tebang optimum, dan keuntungan finansial dari tanaman sungkai. Penelitian dilakukan di hutan tanaman rakyat, Kabupaten Kapuas Provinsi Kalimantan Tengah. Obyek penelitian ialah tanaman sungkai yang ditanam sejak tahun 1998 pada tipe tanah Ultisol. Analisis data menggunakan nilai rataan diameter, tinggi dan volume, riap tahunan rata-rata tahunan, persamaan regresi, NPV, BCR dan IRR. Hasil penelitian menunjukkan bahwa pada umur 12 tahun prosen hidup tanaman mencapai 89,7 %, riap tahunan rata-rata 10,14 m3 ha-1 year-1 dengan kerapatan 997 pohon/ha. Model pertumbuhan tanaman sungkai ialah y = 2,073 + 1,6623x - 0,0165x2 (R2= 84,05%). Pada tingkat suku bunga pinjaman 9% per tahun, tanaman sungkai mempunyai siklus tebang ekonomi selama 15 tahun dengan nilai NPV Rp. 58,49 juta/ha, BCR: 7,64 dan IRR: 11,75%. Pada tingkat suku bunga pinjaman 6% dan 12% per tahun, maka pada siklus tebang selama 15 tahun, nilai NPVnya masing â€“ masing menjadi Rp. 92,65 juta/ha dan Rp. 36,6 juta/ha. Tanaman sungkai sangat sesuai dikembangkan dalam hutan tanaman dan untuk meningkatkan produktivitas lahan bekas perladangan berpindah, semak belukar dan hutan potensi rendah yang tersebar luas, khususnya di Kalimantan.Kata kunci : Pertumbuhan dan hasil, riap tahunan rata â€“ rata, Peronema canescens, siklus tebang ekonomi</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/41</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i2.41</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 2 (2012): Sains Natural (Edisi Khusus); 116-122</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/41/39</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Wahyudi Wahyudi, Zainal Muttaqin, A. Russel Mojiol</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/42</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">INVENTARISASI HAMA DAN PENYAKIT TANAMAN JATI UNGGUL NUSANTARA DI KEBUN PERCOBAAN COGREK BOGOR</dc:title>
	<dc:creator>Pratiwi, Tyas</dc:creator>
	<dc:creator>Karmanah, Karmanah</dc:creator>
	<dc:creator>Gusmarianti, Rini</dc:creator>
	<dc:description xml:lang="en-US">Inventory of Plant Pest and Disease of Superior Nusantara Teak in Experimental Garden Cogrek, BogorÂ Â Â Â Â Â Â  Research on inventory and identification of pests and diseases of plants (PDP) which attacked Superior Teak Plant Nusantara (JUN), aimed to be able to control more effectively and efficiently. The experiment was conducted from November to January 2012, at the Experimental garden Cogrek, University of Nusa Bangsa. Inventory PDP was done with looking around the teak tree stands. The parameters investigated were the symptoms of an attack, the damage caused by PDP and other pests that were in the enveroment of teak stands. Sampling was done by taking the part of plant pests and plant diseases of teak. Identification was done directly or indirectly. Direct identification was through direct observation in the field by observing the symptoms of an attack and assess the extent of damage and the pathogen bioecology information. While indirect way was done with sampling of pathogen of infected plants. then taken to the laboratory to be identified. The results of this study concluded that : the type of pests that were found were various types of grasshoppers (Order Orthoptera), teak leaf caterpillar (Hiblaea puera), tree termites, termite rods, subterranean termites, mealybug (Pseudococcus) and beetle pests, powder wet (Xyleborus destruens). Type of disease found Wet leaf blight (Blight), stem rot and open wounds caused by a fungus (Phytophteras, sp). While the percentage of crop damage index of teak was lower than the results of previous studies on plant of age 3 years old.Keywords : Teak Superior archipelago, Inventory, Pests, Diseases.Â ABSTRAKÂ Â Â Â Â Â Â Â Â  Penelitian mengenai inventarisasi dan identifikasi hama dan penyakit tanaman (HPT) yang menyerang tanaman Jati Unggul Nusantara (JUN), bertujuan untuk dapat melakukan pengendalian yang lebih efektif dan efisien. Penelitian dilaksanakan pada bulan Nopember sampai Januari 2012, di Kebun Percobaan Cogrek Universitas Nusa Bangsa. Inventarisasi HPT dilakukan dengan mengadakan pengamatan HPT disekitar tegakan pohon Jati (JUN). Parameter yang diamati berupa gejala serangan dan kerusakan yang disebabkan oleh HPT serta jenis hama lainnya yang berada pada lingkungan sekitar tegakan jati. Pengambilan sampel dilakukan dengan cara mengambil bagian tanaman yang terserang hama dan penyakit tanaman Jati (JUN). Identifikasi dilakukan secara langsung maupun tidak langsung. Identifikasi secara langsung melalui pengamatan langsung di lapangan dengan mengamati gejala serangan dan menilai tingkat kerusakan serta informasi bioekologi patogen tersebut. Sedangkan cara tidak langsung dilakukan dengan pengambilan contoh/sampel spesimen patogen dan tanaman terserang. Selanjutnya dibawa ke laboratorium untuk diidentifikasi. Hasil penelitian dapat disimpulkan bahwa : jenis hama yang ditemukan adalah berbagai jenis belalang (Ordo Orthoptera), ulat daun jati (Hiblaea puera), rayap pohon, rayap batang, rayap tanah, kutu putih (Pseudococcus), dan Hama Kumbang, Bubuk Basah (Xyleborus destruens).Â  Jenis penyakit yang ditemukan adalah Hawar Daun (Blight), busuk batang dan luka terbuka yang disebabkan oleh jamur (Phytophteras, sp). Sedangkan persentase indeks kerusakan tanaman jati lebih rendah dibandingkan hasil penelitian sebelumnya yaitu pada umur tanaman 3 tahun.Kata Kunci : Jati Unggul Nusantara, Inventarisasi, Hama, Penyakit.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/42</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i2.42</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 2 (2012): Sains Natural (Edisi Khusus); 123-133</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/42/40</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Tyas Pratiwi, Karmanah Karmanah, Rini Gusmarianti</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/43</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">BIODIVERSITAS DAN POTENSI MIKROORGANISME PENTING DI BAWAH TEGAKAN JATI UNGGUL NUSANTARA (JUN) UMUR 5 TAHUN DI KEBUN PERCOBAAN COGREG BOGOR</dc:title>
	<dc:creator>Srikandi, Srikandi</dc:creator>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:description xml:lang="en-US">Important Microorganisme and Potential Biodiversity Under The Superior Teak Stands Nusantara (JUN) of 5 Years Old in Experimental Garden, Cogreg, BogorÂ Â Â Â Â Â Â Â  Biodiversita of mikoorganisme on the ground is a lot happen on the rhizosphere. Microorganisms can live in substrates released by the plant from the roots or in dead plants, it can also stimulate appearence of Â nutrients from the roots to produce compounds that accelerate growth. Biodiversity of rhizosphere bacteria isolated on Kings B medium and Nutrient Agar (NA) in the middle, front and rear land totaling 25 isolates with, different morphological colonies. Overall there were 22 morphological diversity of bacteria isolated on Kings medium B and 3 bacteria on NA media. Each different colony of morphology could be for a different type. The number of colonies were isolated in Kings B medium reached the center of the 1.61 x 108 cfu/ml, the front as much as 7.87 x 109 cfu/ml and the rear of the total population could not be calculated because each isolate population was &amp;gt; 250 colonies. Meanwhile, isolated on NA medium for the middle ground, and the front of the number of colonies isolated with NA media ineligible minimum and maximum standart calculation of bacteria which ranges between 25 â€“ 250. For a population of bacteria in the back of soil his total of 2.23 x 103 cfu/ml. Mycorrhizae were found on the overall JUN stands dominated by Gigaspora type (65.3%) followed by Glomus type (28.6 %) and Acaulospora (6.1 %). Two isolated namely isolates 1A and 1B showed the potential to produce a hormone IAA on the third day incubation period. Meanwhile, on the seventh day, all isolates were tested with reagents Salkowsi, not showad a positive reaction (red color does not appear). In the preliminary study, it was known that on the third day was the optimum day to produce the hormone IAA.Keywords : Biodiversity, microorganisms, bacteria, morphology, hormoneÂ ABSTRAKÂ Â Â Â Â Â Â  Biodiversita mikoorganisme pada tanah banyak terjadi di daerah rizosfer. Mikroorganisme dapat hidup dari substrat yang dikeluarkan oleh tanaman melalui akar ataupun tanaman yang mati, di samping itu dapat juga merangsang pengeluaran unsur hara dari akar dan dapat menghasilkan senyawa â€“ senyawa yang mempercepat pertumbuhan. Biodiversitas Bakteri Rhizosfer yang terisolasi pada media Kings B dan Nutrient Agar (NA) di tanah bagian tengah, depan dan belakang lahan berjumlah 25 isolat, dengan morfologi koloni yang berbeda â€“ beda. Secara keseluruhan terdapat 22 keragaman morfologi isolat bakteri yang terisolasi pada media Kings B dan 3 isolat pada media NA. Setiap morfologi koloni yang berbeda dimungkinkan merupakan jenis yang berbeda. Jumlah populasi koloni yang terisolasi pada media Kings B bagian tengah mencapai 1,61 x 108 cfu/ml, bagian depan Â sebanyak 7,87 x 109 cfu/ml dan bagian belakang jumlah populasi tidak dapat dihitung karena setiap isolate jumlah populasinya &amp;gt; 250 koloni. Sedangkan yang terisolasi pada media NA untuk tanah bagian tengah dan depan jumlah koloni yang terisolasi dengan media NA tidak memenuhi syarat batas minimum dan maksimum perhitungan bakteri yang diperkenankan yaitu rentang antara 25 â€“ 250. Untuk jumlah populasi bakteri untuk tanah bagian belakangÂ  totalnya 2,23 x 103 cfu/ml. Mikoriza yang ditemukan pada tegakan JUN secara keseluruhan di dominasi oleh jenis Gigaspora (65,3%) diikuti oleh jenis Glomus (28,6%) dan Acaulospora (6,1%). Dua buah isolate yaitu isolate 1A dan 1B menunjukan potensi dalam menghasilkan hormone IAA pada masa inkubasi hari ke tiga. Sedangkan pada hari ke tujuh, semua isolate yang diuji dengan pereaksi Salkowsi tidak menunjukkan reaksi yang positif (warna merah tidak muncul). Pada penelitian pendahuluan ini diketahui bahwa pada hari ke tiga adalah hari optimum isolate dalam menghasilkan hormon IAA.Kata kunci : Biodiversitas, mikroorganisme, bakteri, morfologi, hormon</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/43</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i2.43</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 2 (2012): Sains Natural (Edisi Khusus); 134-142</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/43/41</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Srikandi Srikandi, Lilis Sugiarti, Mamay Maslahat</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/44</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">KEANEKARAGAMAN SATWA LIAR PADA TEGAKAN JATI UNGGUL NUSANTARA (JUN) UMUR 5 TAHUN DI KEBUN PERCOBAAN UNIVERSITAS NUSA BANGSA, BOGOR</dc:title>
	<dc:creator>Nugraha, Taofik Herdian</dc:creator>
	<dc:creator>Susdiyanti, Tun</dc:creator>
	<dc:creator>Setyaningsih, Luluk</dc:creator>
	<dc:description xml:lang="en-US">Diversity of Wildlife in Stands of Nusantara Superior Teak (JUN) Age 5 Years Old in Nusa Bangsa University Experimental Garden, BogorÂ Â Â Â Â Â Â  Habitat is a place or environment where wildlife get a source of food, water and shelter in order to meet the needs of their lives including support for the breed. Its presence in of activity of human life can be an indicator of naturalness of an area. This study aimed to identify the species of wildlife and to determined population density, abundance and diversity of wildlife found at the Experimental garden of University of Nusa Bangsa. This study had been done in 2009. The research method was a combination methods abundance point method and strip transect. This method could be done for mamalia, aves and reptiles observation and was intended to obtain data of wildlife with having higher contact chance. Pathways methods for mammals observations and point method for observation of reptiles and aves. Results of previous studies identified had a total of 19 wildlife species from three classes (reptiles, aves and mammals). Wildlife populations identified in the Experiment were 891 individuals and the abundence of 89.1 individu/Ha. Wildlife Species Diversity at the Experiment classified as moderate with a score index value of 2.361. The wildlife was most commonly found were Cattle Swallow, Home Kapinis and Rice Cici. While in Â the 2011 study identified as many as 16 wild animals of the three classes of animals (reptiles, aves and mammals), among others Gardens Lizard, Â Koros Snake, Ropes Picis Snake, Mandy Gray Birds, Quail, Cattle Swallow, Kapinis, turtledoves, Perenjak, Kutilang, Bananas Cinenen, Rice Cici, Sparrow, Sparrow/Scaly, grate and Bats. Wildlife populations identified in the Experiment were 137 idividu and the abundance of 13.7 individu/Ha2. Wildlife Species Diversity at the Experiment classified as moderate with a index score of 2.35. The wildlife was most commonly found Cattle Swallow, Kutilang, garden lizards and turtledoves.Keywords : Biodiversity, wildlife, habitat, experimental gardens UNBÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Habitat adalah suatu tempat atau lingkungan dimana satwaliar mendapatkan sumberÂ  makanan, air dan perlindungan (shelter) guna memenuhi kebutuhan untuk menunjang kehidupan mereka termasuk diantaranya untuk beranak pinak atau berkembang biak. Keberadaannya ditengah â€“ tengah aktifitas dan kehidupan manusia dapat menjadi indicator akan kealamian suatu wilayah. Penelitian ini bertujuan untuk mengidentifikasi jenis satwa liar dan untuk mengetahui kepadatan populasi, kelimpahan serta keanekaragaman jenis satwaliar yang terdapat di Kebun Percobaan UNB. Penelitian ini merupakan penelitian yang telah dilakukan pada tahun 2009. Metode penelitian dengan metode gabungan antara metode kelimpahan titik (point of abundance) dan transek jalur. Dengan metode ini dapat dilakukan untuk pengamatan mamalia.aves dan reptile sekaligus serta dimaksudkan untuk memperoleh data tentang satwaliar dengan peluang kontak yang lebih tinggi. Metode jalur untuk pengamatan mamalia sedangkan metode titik untuk pengamatan reptil dan aves. Hasil penelitian sebelumnya teridentifikasi sebanyak 19 satwa liar dari tiga kelas satwa (reptile, aves dan mamalia). Populasi satwa liar yang teridentifikasi di Kebun Percobaan UNB sebesar 891 individu dan jumlah kelimpahannya sebesar 89,1 individu/Ha2. Keanekaragaman Jenis Satwa Liar di Kebun Percobaan UNB tergolong sedang dengan nilai indeks sebesar 2,361. Satwa liar yang paling banyak ditemukan adalah Walet Sapi, Kapinis Rumah dan Cici Padi. Sedangkan pada penelitian 2011 teridentifikasi sebanyak 16 satwa liar dari tiga kelas satwa (reptile, aves dan mamalia) antara lain Kadal Kebun, Ular Koros, Ular Tali Picis, Burung Wiwik Kelabu, Burung Puyuh, Walet Sapi, Kapinis, Tekukur,Perenjak, Kutilang, Cinenen Pisang, Cici Padi, Burung Gereja, Burung Pipit/Bondol, Garangan, dan Kalong. Populasi satwa liar yang teridentifikasi di Kebun Percobaan UNB sebesar 137 individu dan jumlah kelimpahannya sebesar 13,7 individu/Ha2. Keanekaragaman Jenis Satwa Liar di Kebun Percobaan UNB tergolong sedang dengan nilai indeks sebesar 2,35. Satwa liar yang paling banyak ditemukan adalah Walet Sapi, Kutilang, kadal kebun dan Tekukur.Kata Kunci Â : Keanekaragaman, satwaliar, habitat, kebun percobaan UNB</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/44</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i2.44</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 2 (2012): Sains Natural (Edisi Khusus); 143-154</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/44/42</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Taofik Herdian Nugraha, Tun Susdiyanti, Luluk Setyaningsih</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/45</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
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	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">POTENSI BIOSORBEN TANDAN KOSONG KELAPA SAWIT (TKKS) DALAM RECOVERY LIMBAH  FENOL</dc:title>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Hutagaol, Ricson P.</dc:creator>
	<dc:creator>Lestari, Shanti</dc:creator>
	<dc:description xml:lang="en-US">Potential Biosorben of Oil Palm of Empty Bunch (TKKS) for Recovery of Phenol WasteÂ Â Â Â Â Â Â Â Â  The palm oil industry is one of the strategic industries engaged in agro â€“ based industry are widely grown in tropical countries such as Indonesia, Malaysia and Thailand. Oil palm plantations produce solid waste, one of them in the form of empty fruit Bunche (TKKS). Utilization of the TKKS is still not optimal. Oil TKKS contains chemical compounds in the form of cellulose that can be used as a biosorben. TKKS Biosorben can be used for recovery phenolic compounds waste. Phenol is one of the components in the waste water that is very dangerous, because the toxic and corrosive to the skin as well as carcinogenic, therefore phenol classified as hazardous material (B3). The research aimed to determine the optimum absorption of phenolle waste by TKKS biosorben, determination of adsorption isotherm equation and comparing the effectiveness of the modified TKKS (BTB) biosorben and without modification (BTM). The optimum conditions of sorption included contact time, biosorben weight, the effect of pH and concentration of phenol. The results showed that the optimum conditions BTM adsorption at 120 minutes, biosorben weighs 1 gram and pH 7. BTB optimum conditions was 10 min adsorption time, biosorben weights 0.5 grams and pH 5. Adsorption capacity (Q) at the optimum conditions BTM and BTB, respectively, 84.4081 and 502.724 mg/g biosorben, this showed that the adsorption capacity of phenol by modified TKKS biosorben provided greater results. Adsorption of phenol solution by BTM and BTB follow Langmuir isotherm equation.Key word : biosorben, TKKS, phenol, adsorption, Langmuir isothermÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Industri kelapa sawit merupakan salah satu industri strategis yang bergerak pada sektor pertanian (agro-based industry) yang banyak berkembang di negara-negara tropis seperti Indonesia, Malaysia dan Thailand. Perkebunan kelapa sawit menghasilkan limbah padat, salah satunya berupa tandan kosong. Pemanfaatan limbah tandan kosong saat ini masih belumÂ  maksimal. Tandan Kosong Kelapa SawitÂ  (TKKS) mengandung senyawa kimia berupa selulosa sehingga limbah TKKS dapat dimanfaatkan sebagai biosorben. Biosorben TKKS dapat digunakan untuk pengelolaan limbah senyawa fenol. Fenol merupakan salah satu komponen dalam air limbah yang sangat berbahaya, karena beracun dan bersifat korosif terhadap kulit sertaÂ  karsinogenik,Â  oleh karena itu fenol digolongkan sebagai bahan beracun dan berbahaya (B3). Tujuan penelitian adalah untuk mengetahui kondisi optimum proses sorpsi limbah fenol oleh biosorben asal TKKS, penentuan persamaan isotherm adsorpsi, serta membandingkan efektifitas biosorben TKKS yang dimodifikasi (BTB) dengan biosorben TKKS tanpa modifikasi (BTM). Kondisi optimum sorpsi meliputi waktu kontak, bobot biosorben, pengaruh pH dan konsentrasi fenol. Hasil penelitian menunjukan bahwa kondisi optimum BTM pada waktu adsorpsi 120 menit, bobot biosorben 1 gram, dan pH 7. Kondisi optimum BTB adalah waktu adsorpsi 10 menit, bobot biosorben 0,5 gram, dan pH 5. Kapasitas adsorpsi (Q) pada kondisi optimum BTM dan BTB berturut-turut adalah 84,4081 dan 502,724 Î¼g/g biosorben, hal ini menunjukan bahwa kapasitas adsorpsi fenol oleh biosorben TKKS yang dimodifikasi memberikan hasil yang lebih besar. Adsorpsi larutan fenol oleh BTM dan BTB mengikuti persamaan isoterm Langmuir.Kata Kunci : Biosorben, TKKS, Fenol, Adsorpsi, isotherm Langmuir</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/45</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i2.45</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 2 (2012): Sains Natural (Edisi Khusus); 155-168</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/45/43</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mamay Maslahat, Ricson P. Hutagaol, Shanti Lestari</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/46</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
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<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
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	<dc:title xml:lang="en-US">ALIRAN PERMUKAAN DAN EROSI PADA PENUTUPAN TANAMAN JATI UNGGUL NUSANTARA (JUN) DI KEBUN PERCOBAAN UNB, COGREG</dc:title>
	<dc:creator>Panjaitan, Poltak BP</dc:creator>
	<dc:creator>Rusli, Abdul Rahman</dc:creator>
	<dc:description xml:lang="en-US">Surface Flow and Erosion of Plant Closure of Nusantara Superior Teak (JUN) UNB Experimental Garden, Cogreg, BogorÂ Â Â Â Â Â Â Â Â  The study results showed that the amount of rainfall was 1862.40 m3/ha and the volume of runoff occured was 387.20 m3/ha or 20.79 % and the amount of erosion occured 780.52 kg/ha or 0.78 ton/ha or 0.57 m3/ha. This showed that the nusantara superior teak plants (JUN) not optimally hold erosion. This sthappened because the plants was only four years, old so the root was not so deep and the infer cropping plant just harvesed. While erosion was still below the threshold limit. Regression analysis showed that the relationship of rainfall and the long rain runoff was very close relasionship to the value of r = 0.93 with R2 value of 86.5 %, while for the erosion having the r value of = 0.903 and R2 = 81.5 % . This means that 86.5 % Â rainfall and long of rains affected runoff and 81.5 % against erosion. From the linear regression analysis showed that the one- unit change in rainfall and long rains would cause changes in flow accretion of 0.31 m3 and erosion of 2,661 kg/ha erosion.Keywords : Teak Superior archipelago, Erosion, Surface FlowÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Hasil penelitian menunjukkan bahwa jumlah curah hujan adalah 1862,40m3/ha dan volume aliran permukaan yang terjadi adalah sebesar 387,20m3/ha atau 20,79 % dan jumlah erosi yang terjadi adalah sebesar 780,52 kg/ha atau 0,78 ton/ha atau 0,57 m3/ha. Ini menunjukkan bahwa tanaman jati unggul nusantara (JUN) belum secara maksimal untuk menahan laju aliran permukaan yang terjadi.Hal ini disebabkan anaman jati tersebut baru berumur empat tahun. Sehinggan sistem perakarannya belum begitu dalam dan tanaman tumpangsarinya baru dilakukan pemanenan. Sedangkan erosi yang terjadi masih di bawah ambang batas. Analisis regresi menunjukkan bahwa hubungan curah hujan dan lama hujan terhadap aliran permukaanÂ  adalah sangat erat dengan nilai r =0,93 dengan nilai R2 86,5% , sedangkan untuk erosi nilai r = 0,903 dan R2 =81,5%.Â  Ini berarti bahwaÂ  86,5% curah hujan dan lama hujan berpengaruh terhadap aliran permukaan danÂ  81,5% terhadap erosi yang terjadi. Dari analisis regresi linier menunjukan bahwa dengan perubahan satu â€“ satuan curah hujan dan lama hujan akan menyebabkan perubahan pertambahanÂ  0,31 m3 aliran permukaan dan 2,661 kg/ha erosi.Kata kunci : Jati Unggul Nusantara, Erosi, Aliran Permukaan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/46</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i2.46</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 2 (2012): Sains Natural (Edisi Khusus); 169-178</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/46/44</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Poltak BP Panjaitan, Abdul Rahman Rusli</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/47</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
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				<setSpec>driver</setSpec>
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	<dc:title xml:lang="en-US">PERTUMBUHAN TANAMAN JATI UNGGUL NUSANTARA DENGAN POLA AGROFORESTRY UMUR LIMA TAHUN</dc:title>
	<dc:creator>Supriono, Bambang</dc:creator>
	<dc:creator>Setyaningsih, Luluk</dc:creator>
	<dc:description xml:lang="en-US">Growth of Superior Teak Plant Nusantara With Agroforestry Pattern at Five Years OldSuperior Teak Nusantara (JUN) is a product of Teak seedlings produced by Setyamitra Co vegetatively from â€œPerum Perhutani teak plus standsâ€ and by inducing the root in order to raises the compound root. JUN has been planted in the Cogreg experimental garden, using the pattern of intercropping with annual crops and seasonal crops and currently JUN is 5 years old. This study was conducted to determine the effect of intercropping on the growth pattern of height, diameter and volume of JUN at 5 years old and looking for patterns of relationship between the volume and a diameter of JUN. Data were analyzed by linear regression and General Linear Model â€“ Multivariate. Samples determined JUN tree with random start systematic sampling with a sampling intensity of 10%. In the two plots of the intercropping management and one plot without intercropping met in which to be done observation of the branch height, total height and diameter at breast height of JUN. The results showed that intercropping patterns greatly affect the growth of Superior Teak Nusantara (JUN) of five years old (height, diameter and volume as well as the average annual increment of height, diameter and average annual increment of volume). Superate Teak Nusantara (JUN) Growth of average annual increment without in intercropping pattern of management (control) was greatest than both management, for diameter of 3.17 cm/year, for high was 2.66 m/year and the average annual increment for volume was 0,039 m3/year. Occured very close relationship between volume and diameter wath equation of Y = 1.063 x 10-4 X 2,343. The results of the multivariate analysis, treatment variables (independent variables) affect the variable diameter, height and volume (dependent variable) Superior Teak Nusantara (JUN). The results of the analysis of the estimation of the diameter of the pattern of annual crop management has a diameter of 0.235 cm lower than the one with crop management patterns crop in turn.Keywords : New Teak Seeds, Crop Intercropping, Teak Superior Archipelago (JUN)Â ABSTRAKÂ Â Â Â Â Â Â Â Â  Jati Unggul Nusantara (JUN) adalah suatu produk semai Jati yang diproduksi oleh PT. Setyamitra secara vegetatif dari tegakan jati plus Perum Perhutani dan dengan menginduksi akarnya sehingga memunculkan akar tunggang majemuk. JUN telah ditanam di kebun percobaan Cogreg, dengan menggunakan pola tumpangsari dengan tanaman pertanian tahunan serta tanaman semusim dan saat ini JUN telah berumur 5 tahun. Penelitian ini dilakukan untuk mengetahui pengaruh pola tumpangsari terhadap pertumbuhan tinggi, diameter dan volume JUN umur 5 tahun, serta mencari pola hubungan antara volume dengan diameter JUN. Penelitian dianalisis denganÂ  regresi linier dan General Â Linear Model-Multivariate. Sampel pohon JUN ditentukan secara systematic sampling with Â random start denganÂ  intensitas sampling 10 %. DalamÂ  dua petak pengelolaan pola tumpangsari dan satu petak tanpa tumpangsari yang di dalamnya dilakukanÂ  pengamatan terhadap tinggi bebas cabang dan tinggi total serta diameter setinggi dada JUN. Hasil penelitian menunjukkan bahwa pola tumpangsari sangat berpengaruh terhadap pertumbuhan Jati Unggul Nusantara (JUN) umur lima tahun (tinggi, diameter dan volume serta riap rataâ€“rata tahunan untuk tinggi, diameter dan riap rata â€“ rataÂ  tahunan volume). Pertumbuhan Jati Unggul Nusantara (JUN) riap rata â€“ rata tahunan pada pola pengelolaan tanpa tumpangsari (kontrol) mempunyai riap rataâ€“rata Â tahunan paling besar dibanding kedua pengelolaan, untuk diameter sebesar 3,17cm/tahun, untuk tinggi sebesar 2,66 m/tahun dan riap rata â€“ rata Â tahunan untuk volume sebesar 0,039 m3/tahun. Terjadi hubungan yang sangat erat antara volume dan diameter dengan persamaan Y = 1,063 x 10-4 X2,343. Hasil analisisi dengan multivariat, variabel perlakuan (variabel independen) berpengaruh terhadap variabel diameter tinggi dan volume (variabel dependen) Jati Unggul Nusantara (JUN). Hasil analisis estimasi terhadap diameter pada pola pengelolaan tanaman tahunan mempunyai diameter lebih rendah 0,235 cm dibandingkan dengan pola pengelolaan tanaman giliran.Kata Kunci :Â  Bibit Jati Baru, Tanaman Tumpangsari, Jati Unggul Nusantara (JUN)</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/47</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i2.47</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 2 (2012): Sains Natural (Edisi Khusus); 179-185</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/47/45</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Bambang Supriono, Luluk Setyaningsih</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/48</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
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	<dc:title xml:lang="en-US">IDENTIFIKASI DAN POTENSI GULMA DI BAWAH TEGAKAN JATI UNGGUL NUSANTARA (JUN) DI KEBUN PERCOBAAN UNIVERSITAS NUSA BANGSA, COGREG, BOGOR</dc:title>
	<dc:creator>Widhyastini, I. G. A. Manik</dc:creator>
	<dc:creator>Yuliani, Nia</dc:creator>
	<dc:creator>Nurilmala, Febi</dc:creator>
	<dc:description xml:lang="en-US">Weed Identification and Potential under the Stands o Superior Teak Nusantara (JUN) in Experiment Garden of Universityof Nusa Bangsa, Cogreg, BogorÂ Â Â Â Â Â Â Â Â  Weed is a plant that the presence is not desirable because it can reduce the results achieved by the plant production. Weeds is an important component in forest ecosystems that must be taken their role. Composition and diversity of weed will determine the forest structure that will ultimately affect the ecological function of the forest. The presence and diversity of weeds under JUN stands in the area of Nusa Bangsa University experimental garden in Cogreg areas need to be studied and identifie for its potential to be used and prevention as well. The method of analysis used in this study was the least squares method of 0,5 m x 0,5 m and made 10 sample plots under the stand of JUN. Weeds were identified by using the description book based on morphological characteristics, the type, amount and its potential as a medical plant. The results showed that there were 15 types of weeds under JUN stands, namely Oxalis barrelieri, Phyllanthus niruri, Nephrolepis biserata, Ageratum conyzoides, Borreria latifolia, Molineria longiflora, Murdanium nudiflora, Synedrella nodiflora, Acalypha indica L, Echinochloa crus â€“ galli (L.) P. beauv, Commelina diffusa Burm, Asystasia sp. and Clibadium surinamense. Among all the types of weeds, Borreria latifolia were dominant.Keywords : Teak Superior Archipelago (JUN), weeds, identification, medicinal plantsÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Gulma merupakan tumbuhan yang kehadirannya tidak diinginkan karena dapat menurunkan hasil yang dicapai oleh tanaman produksi. Gulma merupakan komponen penting dalam ekosistem hutan yang harus diperhitungkan perannya. Komposisi dan keanekaragaman gulma ikut menentukan struktur hutan yang pada akhirnya akan berpengaruh pada fungsi ekologis hutan. Kehadiran dan keanekaragaman gulma di bawah tegakan JUN di areal kebun percobaan Universitas Nusa Bangsa di daerah Cogreg perlu dipelajari dan diidentifikasi untuk dimanfaatkan potensinya maupun untuk penanggulangan gulma. Metode analisis yang digunakan dalam penelitian ini adalah dengan metode kuadrat 0,5m x 0,5m dan dibuat 10 petak contoh di bawah tegakan JUN. Gulma diidentifikasi dengan menggunakan buku deskripsi berdasarkan ciri morfologi, jenis, jumlah serta potensinya sebagai tumbuhan obat. Hasil penelitian menunjukkan bahwa terdapat 15 jenis gulma di bawah tegakan JUN, yaitu Oxalis barrelieri, Phyllanthus niruri, Nephrolepis biserata, Ageratum conyzoides, Borreria latifolia, Molineria longiflora, Murdanium nudiflora, Synedrella nodiflora, Acalypha indica L, Echinochloa crus-galli (L.) P. Beauv, Commelina diffusa Burm, Asystasia,sp,dan Clibadium surinamense. Diantara semua jenis gulma tersebut, yang mendominasi adalah Borreria latifolia.Kata Kunci: Jati Unggul Nusantara (JUN), gulma, identifikasi, tanaman obat</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-11-25</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/48</dc:identifier>
	<dc:identifier>10.31938/jsn.v2i2.48</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 2 No. 2 (2012): Sains Natural (Edisi Khusus); 186-200</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v2i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/48/46</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 I. G. A. Manik Widhyastini, Nia Yuliani, Febi Nurilmala</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/49</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
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	<dc:title xml:lang="en-US">POTENSI PERAKARAN BIBIT TANAMAN NANAS BOGOR (Ananas comusus L. Merr) ASAL STEK DAUN MAHKOTA BUAH</dc:title>
	<dc:creator>Karmanah, Karmanah</dc:creator>
	<dc:creator>Siswanti, Siswanti</dc:creator>
	<dc:description xml:lang="en-US">Rooting</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/49</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i1.49</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 1 (2013): Sains Natural; 1-11</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/49/47</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Karmanah Karmanah, Siswanti Siswanti</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/50</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
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	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
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	<dc:title xml:lang="en-US">POLIEUGENOL SEBAGAI SENYAWA PEMBAWA UNTUK TRANSPOR FENOL MENGGUNAKAN METODE POLYMER INCLUSION MEMBRANE (PIM)</dc:title>
	<dc:creator>Kiswandono, Agung Abadi</dc:creator>
	<dc:creator>Siswanta, Dwi</dc:creator>
	<dc:creator>Sari, Eni Kartika</dc:creator>
	<dc:description xml:lang="en-US">Polieugenol</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/50</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i1.50</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 1 (2013): Sains Natural; 12-24</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/50/48</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Agung Abadi Kiswandono, Dwi Siswanta, Eni Kartika Sari</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/51</identifier>
				<datestamp>2023-11-29T01:27:01Z</datestamp>
				<setSpec>JSN:ART</setSpec>
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			</header>
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<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">MIKROPROPAGASI TANAMAN TALAS BOGOR (Colocasia esculenta (L.) Schott) MELALUI TUNAS APIKAL</dc:title>
	<dc:creator>Nurilmala, Febi</dc:creator>
	<dc:creator>Nirmala, Puput Hanum</dc:creator>
	<dc:description xml:lang="en-US">Micropropagation</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/51</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i1.51</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 1 (2013): Sains Natural; 25-31</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/51/49</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Febi Nurilmala, Puput Hanum Nirmala</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/52</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
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				<setSpec>driver</setSpec>
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<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
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	<dc:title xml:lang="en-US">PENGARUH KONSENTRASI Na2CO3 TERHADAP RENDEMEN NATRIUM ALGINAT DAN KANDUNGAN PROKSIMAT ALGINAT DARI RUMPUT LAUT Sargassum sp.</dc:title>
	<dc:creator>Srikandi, Srikandi</dc:creator>
	<dc:creator>Afifi, Muhammad Ridho</dc:creator>
	<dc:creator>Sutamihardja, RTM</dc:creator>
	<dc:description xml:lang="en-US">Effect</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/52</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i1.52</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 1 (2013): Sains Natural; 32-40</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/52/50</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Srikandi Srikandi, Muhammad Ridho Afifi, RTM Sutamihardja</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/55</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
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	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">BIOREMEDIASI TANAH TERKONTAMINASI MINYAK BUMI DENGAN BAKTERI PETROBA DAN BIOSURFAKTAN</dc:title>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:creator>Tatqiroh, Fhadilatut</dc:creator>
	<dc:creator>Syawaalz, Amry</dc:creator>
	<dc:description xml:lang="en-US">Bioremediation</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/55</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i1.55</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 1 (2013): Sains Natural; 54-62</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/55/53</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Lilis Sugiarti, Fhadilatut Tatqiroh, Amry Syawaalz</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/56</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
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	xmlns:dc="http://purl.org/dc/elements/1.1/"
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	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">IDENTIFIKASI SENYAWA KIMIA PADA SIMPLISIA DAUN SIRSAK (Annona muricata Linn.)</dc:title>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Syawaalz, Amry</dc:creator>
	<dc:creator>Restianingsih, Rahayu</dc:creator>
	<dc:description xml:lang="en-US">Identification</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/56</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i1.56</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 1 (2013): Sains Natural; 63-73</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/56/54</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mamay Maslahat, Amry Syawaalz, Rahayu Restianingsih</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/57</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">OPTIMASI MAGNESIUM ALUMINUM SILIKAT SEBAGAI PENGENTAL DALAM SEDIAAN DEODORAN</dc:title>
	<dc:creator>Arizal, Ridha</dc:creator>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Amalya, Indah</dc:creator>
	<dc:description xml:lang="en-US">Optimation</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/57</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i1.57</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 1 (2013): Sains Natural; 74-84</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/57/55</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Ridha Arizal, Mamay Maslahat, Indah Amalya</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/58</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">KAJIAN BERBAGAI JENIS PAKAN TERHADAP PERTUMBUHAN BENIH IKAN CUPANG BAGAN (Betta imbellis var. Sumatraensis)</dc:title>
	<dc:creator>Asniati, Asniati</dc:creator>
	<dc:creator>Widhyastini, I.G.A. Manik</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:description xml:lang="en-US">Study</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/58</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i1.58</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 1 (2013): Sains Natural; 85-100</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/58/56</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Asniati Asniati, I.G.A. Manik Widhyastini, Supriyono Eko Wardoyo</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/59</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">EFEKTIVITAS SERBUK GERGAJI SEBAGAI CAMPURAN MEDIA PADA REMEDIASI LAHAN TERCEMAR LUMPUR MINYAK BUMI</dc:title>
	<dc:creator>Dyah, Tri Retno</dc:creator>
	<dc:creator>Adhari, Arief</dc:creator>
	<dc:description xml:lang="en-US">Effectiveness</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/59</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i1.59</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 1 (2013): Sains Natural; 41-53</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/59/57</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Tri Retno Dyah, Arief Adhari</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/60</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">PENINGKATAN KUALITAS PUPUK ORGANIK CAIR DARI LIMBAH CAIR PRODUKSI BIOGAS MENGGUNAKAN COMPOSTAR</dc:title>
	<dc:creator>Dyah, Tri Retno</dc:creator>
	<dc:creator>Srikandi, Srikandi</dc:creator>
	<dc:description xml:lang="en-US">Quality Improvement Â of Â Liquid Â Organic Â Fertilizer from Water Waste Â of Biogas Using Compostar Â Â Â Â Â Â Â Â  It had been improved the quality of the liquid organic fertilizer from waste of Biogas production with the addition of inoculant ( F1 and F2 ) and without inoculant (F0) also additives ( V1 , V2 and V3 ) . Variations of a given treatment comprised of F0V0 (as control), F0V1 , F0V2 , F0V3 , F1V1 , F1V2 , F1V3, F2V1 , F2V2 and F2V3 using experimental design of CRD (Completely Randomized Design) with 3 x replications . Liquid fertilizer quality parameters measured were : temperature , pH , organic-C , total-N and P. While the parameters measured in the corn biomass is wet weight , dry weight , levels of N and P. The results showed that the addition of biofertilizer Compostar isolates (F2) were able to decompose the form of additives to the maximum compared with (F1) and without (F0) the addition of commercial inoculant Â with an average content of N - total of Â 823.2 mg / L and the average P2O5 Â content of 187.7 mg / L. While the addition of additives could increase levels of Â N - total and P2O5 , where the levels of Â N - largest total in the treatment of V3 ( Tp.fish Tp.bone 2 % and 2% ) with an average of 967.6 mg / L , while the largest concentration of P2O5 in treatment V1 ( Tp.fish 2 % ) with an average of 154.4 mg / L. Liquid organic fertilizer did not significantly affect the levels of nutrient uptake , biomass dry weight of corn plants , but had significant effect on plant height , stem large and heavy wet corn crop biomass , was the treatment of F2V2 with the addition of biofertilizer that isolates composter and additives in the form of bone meal 2 % .Keywords : Â liquid organic fertilizer, biogas sludge, compostarÂ ABSTRAKÂ Â Â Â Â Â Â  Telah dilakukan peningkatan kualitas pupuk organik cair dari limbah produksi biogas dengan penambahan inokulanÂ Â  ( F1 dan F2)Â  dan tanpa penambahan inokulan (F0) serta penambahan zat aditif (V1, V2 dan V3).Â Â  Variasi perlakuan yang diberikan Â terdiri dariÂ  F0V0 Â sebagai kontrol, F0V1 , F0V2 , F0V3 ,Â  F1V1 , F1V2 , F1V3Â  , F2V1 , F2V2 , dan F2V3 Â Â menggunakan rancangan percobaan RAL ( Rancang Acak Lengkap) dengan 3 x ulangan. Parameter kualitas pupuk cair yang diukur , yaitu : suhu, pH, C-organik, N-total dan P. Sedangkan parameter pada biomassaÂ  jagung yang diukur adalah bobot basah, bobot kering, Kadar hara N dan P. Hasil yang diperoleh menunjukkan bahwa penambahan biofertilizer berupa isolate Compostar (F2) mampu menguraikan zat aditif secara maksimal dibandingkan denganÂ  inokulan komersil (F1) dan tanpa penambahan inokulan (F0) dengan rataan kandungan N-Total sebesarÂ  823,2 mg/LÂ  dan rataan kandungan P2O5 sebesar 187,7 mg/L. Sedangkan penambahan zat aditif mampu meningkatkan kadar N-Total dan P2O5, dimana kadar N-Total terbesar pada perlakuan V3( Tp.ikan 2% dan Tp.Tulang 2%) dengan rataan sebesar 967,6 mg/L, sedangkan kadar P2O5 terbesar pada perlakuan V1 (Tp.ikan 2%) dengan rataan sebesar 154,4 mg/L. Pemberian pupuk organic cair tidak berpengaruh nyata terhadap serapan kadar hara, berat kering biomassa tanaman jagung, tetapi berpengaruh nyata terhadap tinggi tanaman,besar batang dan berat basah biomassa tanaman jagung, yakni pada perlakuan F2V2 yaituÂ  dengan penambahan biofertilizer isolate composter dan zat aditif berupa tepung tulang 2%.Kata Kunci : pupuk organik cair, sludge biogas, compostar.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/60</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.60</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 101-111</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/60/58</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Tri Retno Dyah, Srikandi Srikandi</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/61</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">KECERNAAN PROTEIN BIJI KAPUK (Ceiba petandra G) SECARA IN VITRO UNTUK PAKAN IKAN</dc:title>
	<dc:creator>Primadona, Fitry</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:creator>Hasan, O. D. Subhakti</dc:creator>
	<dc:description xml:lang="en-US">Protein Digestibility of Kapok Seeds in Vitro for Fish FeedÂ Â Â Â Â Â Â  Kapok seeds is a by-product of agricultural industry having potential to be used as raw material for fish feed as a source of protein and essential fats. The content of the protein in the kapok seedÂ  flour is 28 â€“ 34 % that is an overwhelming amount to be a great source of protein for fish feed. Feasibility studies are needed, however, the use of kapok seed based on the digestibility of the protein. Pepsin with concentrations of 0.02; 0.2; and 2 % (in 0.075 N HCl solution) kapok seed flour added in three repetitions to test the digestibility of kapok seed invitro. Undigested protein was then analyzed using the kjeldahl method. Determination optimal concentration of pepsin was calculated based on the remaining undigested proteins (pepsin indigest) and compared the amount of protein digestibility of proteins obtained before (pepsin digest). The research results revealed that to digestibility of protein on concentration of 0.02; 0,20 and 2,0 % was 64,43; 68,42; 65,33%. Statistical test Anova revealed any significant differences of treatment respectively of Â protein digestibility. Test of Least Square Difference (LSD) stated that each Â treatment significantly different. Concentration optimum of enzyme that givethe best digestibility value was 0.20 % digestibility values 68,43% in the level of Â error 0.05.Keywords : Kapok seed flour, protein, pepsin, invitro, optimum digestibility, proximate analysis ABSTRAKÂ Â Â Â Â Â Â Â Â  Biji kapuk merupakan hasil samping industri pertanian yang berpotensi untuk dijadikan bahan baku pakan ikan sebagai sumber protein dan sumber lemak esensial. Komposisi protein pada tepung biji kapuk sebesar 28â€‘34% adalah jumlah yang sangat potensial untuk dijadikan sumber protein bagi pakan ikan. Akan tetapi diperlukan kajian kelayakan penggunaan biji kapuk berdasarkan kecernaan protein.Pepsin dengan konsentrasi 0,02; 0,2; dan Â 2%(larutan dalam HCl 0,075 N) ditambahkan pada tepung biji kapuk dengan tiga kali pengulangan untuk menguji kecernaan biji kapuk secara invitro. Protein yang tercerna kemudian dianalisis menggunakan metode kjeldahl. Penentukan konsentrasiÂ  pepsin optimal dihitung berdasarkan sisa protein yang tidak tercerna(pepsin indigest) dan dibandingkan jumlah protein awal sehingga didapatkan kecernaan protein (pepsin digest).Hasil penelitian menyatakan kecernaan protein padaÂ  konsentrasi 0,02;0,2%;dan 2%Â  berturut turut 64,43; 68,42; 65,33%. Uji statistik Anova menyatakan setiap perlakuan memberikan perbedaan yang signifikan terhadap kecernaan protein. Uji Least Square Difference (LSD) menyatakan setiap perbandingan perlakuan berbeda. Konsentrasi enzim optimum yang memberikan nilai kecernaan terbaik adalah 0,20% (68,43%) pada tingkat kesalahan 0,05.Kata kunci: Tepung biji kapuk, protein, pepsin, invitro, kecernaan optimum, proksimat</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/61</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.61</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 112-128</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/61/59</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Fitry Primadona, Supriyono Eko Wardoyo, O. D. Subhakti Hasan</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
			</metadata>
		</record>
		<record>
			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/62</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">AKTIVITAS ANTIOKSIDAN EKSTRAK AIR SIMPLISIA DAUN SEMBUNG (Blumea balsamifera)</dc:title>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Nurilmala, Febi</dc:creator>
	<dc:creator>Harpeni, Lipi</dc:creator>
	<dc:description xml:lang="en-US">Antioxidant Activity of Aquous Extract of Sembung Leaf (Blumea balsamifera)Â Â Â Â Â Â Â Â Â Â Â Â  Simplicia medicinal plants are more commonly known by the term of herbal medicine in the form boiling and steeping. Sembung leaf water extracts content of secondary metabolites has potential natural antioxidant. An antioxidant is a substance that can prevent or slow down the deterioration of a substance. This research aimed to test the potential of antioxidant in water extracts of leaves sembung (Blumea balsamifera) in the form of boiling and steeping using DPPH method through determination of IC50 values. Best antioxidant test results found in extracts of steeping the leaves with IC50 values of 155,65 ml/l while the extract boiling sembung with IC50 values indicated by 293,80 ml/l, antioxidant standards testing used was quercetin.Keywords : antioxidant, aquousÂ  extract, Blumea balsamifera, DPPHÂ ABSTRAKÂ Â Â Â Â Â Â Â  Simplisia tanaman obat yang lebih dikenal dengan istilah jamu sering diaplikasikan dalam bentuk godogan dan seduhan. Ekstrak air daun sembung memiliki kandungan metabolit sekunder yang berpotensi sebagai antioksidan alami. Antioksidan merupakan substansi yang dapat mencegah atau memperlambat kerusakan suatu zat. Penelitian ini bertujuan menguji potensi antioksidan ekstrak air daun sembung (Blumea balsamifera) dalam bentuk seduhan dan godogan dengan metode DPPH melalui penentuan nilai IC50.Â  Hasil uji antioksidan terbaik terdapat pada ekstrak seduhan daun sembung dengan nilai IC50 sebesar 155,65 ml/l sedangkan ekstrak godogan sembung menunjukan nilai IC50 sebesar 293,80 ml/l, Â sebagai standar pengujian antioksidan digunakan kuersetin.Kata kunci : Antioxidan, extract air, Blumea balsamifera, DPPH</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/62</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.62</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 129-136</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/62/60</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mamay Maslahat, Febi Nurilmala, Lipi Harpeni</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/63</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">PENETAPAN AMBANG BATAS KADAR Fe TOTAL DALAM PUPUK ORGANIK YANG BERPOTENSI MENYEBABKAN KERACUNAN Fe TANAMAN PADI SAWAH</dc:title>
	<dc:creator>Cahyadi, Cahyadi</dc:creator>
	<dc:creator>Yuliani, Nia</dc:creator>
	<dc:creator>Srikandi, Srikandi</dc:creator>
	<dc:description xml:lang="en-US">Determination of Threshold Levels of Total Fe in Organic Fertilizer that Have Potential to Cause Fe Poisoning for Rice PlantÂ Â Â Â Â Â Â Â  The type and quality of organic fertilizers on the market either already registered or not registered are huge numbers . The Government has issued a Ministerial Regulation of Agriculture no 28 in Â 2009 on organic fertilizers, bio-fertilizers , and soil repair is now revised to Regulation of the Minister of Agriculture no 70 in 2011, in order to have Â a good quality of solid organic fertilizer that having Â Fe content does not exceed 9,000 mg / kg . This study aims to establish the total Fe content in the organic fertilizer that could potentially lead then to Fe toxicity for rice plant. The results showed that the effect of organic fertilizer and Fe levels were not significantly different in plant height number,number of seedling, dry straw weight , C - Organic , cation exchange capacity (CEC) and the grain content , but significantly different in plant height and number of tillers at 20 days after plantation . Fe - toxicity limited the total solid organic fertilizer with a dose of 1 ton / ha causing toxicity to rice varieties IR 64 on the ground Inceptisol of Â 54,318 mg Fe/ kg . Threshold in Fe - organic fertilizer with a total dose of 1 ton / ha which could potentially lead to Fe deficiency IR 64 rice varieties at 12,682 mg Fe/ kg , whereas Fe toxicity level was equal to 54,318 mg Fe/ kg .Keywords : TotalFe content, organicfertilizer, toxicity, riceÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Jenis dan mutu pupuk organik yang beredar di pasaran baik yang sudah terdaftar maupun yang belum terdaftar jumlahnya sangat banyak.Pemerintah telah mengeluarkan Peraturan Menteri Pertanian No. 28 Tahun 2009 tentang pupuk organik, pupuk hayati, dan pembenah tanah yang saat ini sudah direvisi menjadi Peraturan Menteri Pertanian No. 70 Tahun 2011 bahwa agar pupuk organik padat berkualitas baik maka kadar Fe yang ada tidak melebihi 9.000 mg/kg. Penelitian ini bertujuan menetapkan kadar Fe total dalam pupuk organik yang berpotensi menyebabkan keracunan Fe untuk tanaman padi sawah. Hasil penelitian menunjukkan bahwa pengaruh pemberian pupuk organik dan kadar Fe tidak berbeda nyata pada tinggi tanaman, jumlah anakan, berat kering jerami, C-Organik, kapasitas tukar kation (KTK) dan isi gabah, tetapi berbeda nyata pada tinggi tanaman dan jumlah anakan pada 20 HST.Â Â  Batas toksisitas Fe-total dalam pupuk organik padat dengan dosis 1 ton/ha yang berpotensi menyebabkan keracunan Fe untuk tanaman padi varietas IR 64 pada tanah inceptisol sebesar 54.318 mg Fe/kg. Ambang batas Fe-total dalam pupuk organik dengan dosis 1 ton/ha yang berpotensi menyebabkan kekurangan Fe untuk tanaman padi varietas IR 64 sebesar 12.682 mg Fe/kg, sedangkanÂ  tingkat keracunan Fe adalah sebesar 54.318 mg Fe/kg.Kata kunci : Kadar Fe total, pupuk organik, toksisitas, padi</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/63</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.63</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 137-145</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/63/61</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Cahyadi Cahyadi, Nia Yuliani, Srikandi Srikandi</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/64</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">AKTIVITAS FUNGISIDA BAHAN PENGAWET KAYU BERBAHAN AKTIF MAJEMUK TERHADAP JAMUR BIRU Diplodia sp</dc:title>
	<dc:creator>Ismanto, Agus</dc:creator>
	<dc:creator>Martono, Dominicus</dc:creator>
	<dc:description xml:lang="en-US">Fungicide Activity of Complex-Active Ingredient of Preservative WoodÂ  Against Bluestain of Diplodia sp.Â Â Â Â Â Â Â Â  Wood preservatives containing chlorotalonyl 450 g/L and carbendazim 100 g/L (Entiblu 450/100SC) was a pesticide compound serves to prevent fungal attacks Diplodia sp on the media of PDA (Potato Dextrose Agars) and to prevent germination of the spores. Inhibition of the rate and intensity of Diplodia sp fungus attacks on the media in petridish indicated a slowing rate of growth of the mycelium. The results showed that the pesticides containing chlorotalonyl 450 g/L and carbendazim 100 g/L with a concentration of 2 x 1.5 kg/ mÂ³ could prevent the growth of the mycelium of Diplodia sp, inhibition rate reached 100%. For single ingredient chlorotalonyl 75 % (Chlorotalonil 75 WP) a concentration of Â½ x 0.375 kg/mÂ³ had been able to prevent the growth of the mycelium up to 100 %, while in carbendazim 50 % (Carbendazim 50 WP) to reached 100 % inhibition at a concentration of 1 xÂ  0.75 kg/mÂ³. Pesticides which was a mixture of active ingredients chlorotalonyl 450 g/L and carbendazim 100 g/L Â no antagonism activity.Keywords : fungicide, complex active ingredient, bluestain of Diplodia sp, chlorotalonyl, carbendazimÂ ABSTRAK Â Â Â Â Â Â Â Â Â  Bahan pengawetÂ  kayu yang mengandung klorotalonil 450 g/L dan karbendasim 100 g/LÂ  (Entiblu 450/100SC) merupakan pestisida majemuk berfungsi untuk mencegah serangan jamur Diplodia sp pada media agar PDA (Potato Dextrose Agar) dan mencegah perkecambahan spora. Penghambatan laju dan intensitas serangan jamur Diplodia sp pada media dalam cawan petri ditunjukkanÂ  pelambatan kecepatan pertumbuhan miselium.Â  Hasil pengujianÂ  menunjukkan bahwa pada pestisida yang mengandung klorotalonil 450 g/L dan karbendasim 100 g/LÂ  dengan konsentrasi 2 x 1,5 kg/mÂ³ dapat mencegah pertumbuhan miselium Diplodia sp , tingkat penghambatan mencapai 100 %. Untuk bahan tunggal klorotalonil 75 %Â  (Chlorotalonil 75WP) pada konsentrasi Â½ x 0,375 kg/mÂ³ telah mampu mencegah pertumbuhan miseliumÂ  sampai 100 %, sedangkan pada karbendasim 50 % (Carbendazim 50 WP) untuk mencapai penghambatan 100 % baru pada konsentrasi 1 x 0,75 kg/mÂ³. Pestisida yang merupakan campuran bahan aktif klorotalonil 450 g/L dan karbendasim 100 g/L tidak ada aktivitas antagonisme.Kata kunci : fungisida, bahan aktif majemuk, jamur biru Diplodia sp, klorotalonil, karbendasim</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/64</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.64</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 146-153</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/64/62</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Agus Ismanto, Dominicus Martono</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/65</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">KERAGAMAN FENOTIPA IKAN NILA BEST F4,F5 DAN IKAN NILA NIRWANA 2 HASIL SELEKSI DENGAN ANALISIS TRUSS MORFOMETRIK</dc:title>
	<dc:creator>Kusmini, Irin Iriana</dc:creator>
	<dc:creator>Soelistyowati, Dinar Tri</dc:creator>
	<dc:creator>Gustiano, Rudhy</dc:creator>
	<dc:creator>Pitriani, Peni</dc:creator>
	<dc:creator>Prakoso, Vitas Atmadi</dc:creator>
	<dc:description xml:lang="en-US">Phenotype Diversity of BEST Nila Fish of F4, F5 and The Nirwana 2 Nila Fish Using Truss Morphometric AnalysisÂ Â Â Â Â Â Â Â Â  In the framework of the management of genetic resources for long-term development and sustainability of cultivating nila tilapia fish for the evaluation of population genetic resources needs to be done. The purpose of this research was to know the fish of nila tilapia BEST phenotype diversity of F4, F5 and the nila tilapia fish of Nirwana 2 using Truss Morfometrik. The fish from populations of Tilapia BEST fish of F4, F5 and a Nirwana 2 fish each sample taken as many as 20 tails. The measurement was done by specifying points along the body of the fish assay based on morfometrik truss method. The dots were connected one with the others so retrieved 21 characters measuring results. The analys was done using cluster analysis. The observations indicated levels of similarity of truss morfometrik BEST Fish of F4, F5 and the Nirwana 2 fish tilapia very high character except on B6, B3, A3, B1, C1 and D6 that significantly different (p â‰¤ 0.05).The results gave an indication of the quantity of fish body thatÂ  BEST fish was Â shorter and rounder than the fish of Nirwana 2 tilapia. Based on the inter population relationship the fish of Nirwana 2 tilapia separated Â from BEST nila of F4 and F5.Keywords : BEST tilapia, Nirwana tilapia, truss morfometrik, diversityÂ ABSTRAKÂ Â Â Â Â Â Â Â  Dalam rangka pengelolaan sumber genetik jangka panjang dan pengembangan budidaya untuk kelestarian ikan nila maka evaluasi sumber daya genetik populasi perlu dilakukan.Tujuan dari penelitian ini adalah mengetahui ragam fenotipe ikan nila BEST F4, F5 dan ikan nila Nirwana 2menggunakanTruss Morfometrik. Ikan nila dari populasi nila BEST F4,F5 dan nila Nirwana2 masing-masing diambil contoh sebanyak 20 ekor. Pengukuran dilakukan dengan menentukan titik-titikacuan sepanjang tubuh ikan uji berdasarkanmetode Truss Morfometrik. Titik-titik dihubungkan satu dengan lainnyasehingga diperoleh 21 karakter hasil pengukuran. Analisis dilakukan dengan menggunakan cluster analysis. Hasil pengamatan menunjukkan tingkat kemiripan truss morfometrik Ikan nila BEST F4, F5 dan ikan nila Nirwana 2 sangat tinggi kecuali pada karakter B6, B3, B1, A3, C1 dan D6 yang berbeda nyata (pâ‰¤0,05).Hasil tersebut memberikan indikasi bahwapola badan ikan nila BEST lebih pendek dan bulat dibandingkan ikan nila Nirwana2 yang lebih panjang. Berdasarkan hubungan interpopulasi ikan nila Nirwana 2 terpisah dengan kelompok nila BEST F4 dan F5.Kata kunci : nila BEST, nila Nirwana, truss morfometrik, keragaman</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/65</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.65</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 154-160</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/65/63</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Irin Iriana Kusmini, Dinar Tri Soelistyowati, Rudhy Gustiano, Peni Pitriani, Vitas Atmadi Prakoso</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/66</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">ANALISIS STOK KARBON HUTAN MANGROVE PADA BERBAGAI TINGKAT KERUSAKAN DI SEGARA ANAKAN CILACAP</dc:title>
	<dc:creator>Azizah, Mia</dc:creator>
	<dc:creator>Ardli, Erwin Riyanto</dc:creator>
	<dc:creator>Sudiana, Eming</dc:creator>
	<dc:description xml:lang="en-US">Cabrbon Stock Analysis of Mangrove Forest in Every Damaged Level in Segara Anakan CilacapÂ Â Â Â Â Â Â Â  Mangrove is a specific vegetation type, found in tropical and subtropical beach area which located in Cilacap Â at a sloping beach area near the mouth of a river and the beach protected from the waves. Segara anakan is one of mangroves region which located at 108 Âº 46'-109 Âº 03 'E and 07 Âº 34' - 07 Âº 47 'South Latitude. Human activities series in Segara anakan mangrove lead the damage of this region, it affects to the ecological and biological or mangrove function as carbon storage place. The aims of this research was to analyze the damage level of mangrove in Segara anakan, Cilacap; to know the spatial distribution of mangrove damage level in Segara anakan; analyze the amount of biomass and carbon stocks at various of damage level in Segara anakan, and to know the number corelation of carbon stocks with damage level in Segara anakan, Cilacap.The research used survey method with purposive random sampling that determine the sampling location based on the damage level. Damage analysis usedÂ  assessment teristis method (field survey) and than spasial distribution used surfer 9.0 and ArcView GIS 3.2. Biomass analysis and the amount of carbon stock used descriptive methods, damage level correlation and the amount of carbon stock used Pearson correlation analysis (SPSS software vs. 19).The result was Segara anakan mangrove, Cilacap currently was divided into not damage (7 station), damaged (3 station) andÂ  heavily damaged (5 station) categories. The amount of biomass and carbon stocks in not damaged area (57,67 tons/ha and 26,50 tons/ha); damaged area (23,40 tons/ha and 10,74 tons/ha, and the heavily damaged area (9,49 tons/ha and 4,37 tons/ha). The destruction of mangrove forest affected the amount of biomass and carbon stocks in Segara anakan, Cilacap.Keywords : mangrove,Â  carbon stock, damage level, Segara Anakan CilacapÂ ABSTRAKÂ Â Â Â Â Â Â  Hutan mangrove merupakan tipe vegetasi khas, terdapat di daerah pantai tropis dan subtropis yang tumbuh subur di daerah pantai yang landai di dekat muara sungai dan pantai yang terlindung dari hempasan gelombang. Segara Anakan adalah salah satu kawasan hutan mangrove yang terletak pada koordinat 07Âº34â€™ - 07Âº47â€™ LS dan 108Âº46â€™- 109Âº03â€™ BT. Serangkaian aktivitas manusia di kawasan hutan mangrove Segara Anakan menyebabkan kawasan ini mengalami kerusakan, hal tersebut berpengaruh terhadap fungsi ekologis dan biologis serta fungsi hutan mangrove sebagai penyimpan karbon.Â  Penelitian ini bertujuan untuk menganalisis dan mengetahui tingkat kerusakanÂ  hutanÂ  mangrove di Segara Anakan Cilacap; mengetahui distribusi spasial potensi stok karbon hutan mangrove di Segara Anakan Cilacap Â danÂ  mengetahui korelasi jumlah stok karbon dengan tingkat kerusakan di Segara Anakan Cilacap.Penelitian ini menggunakan metode survei dengan menggunakan teknik purposive random sampling Â yaitu menentukan lokasi sampling berdasarkan Â pada tingkat kerusakan. Analisis kerusakan menggunakan metode penilaian teristis (survey lapangan) yang selanjutnya didistribusi spasial menggunakan surferÂ  9.0 dan Arcview GIS 3.2. Analisis biomassa dan jumlah stok karbon menggunakan metode deskriptif, korelasi tingkat kerusakan, dan jumlah stok karbon menggunakan analisis korelasi Pearson (Software SPSS vs. 19). Hasil yang diperoleh adalah hutan mangrove Segara Anakan Cilacap saat ini terbagi menjadi area dengan kategori tidak rusak (7 stasiun), rusak (3 stasiun) dan rusak berat (5 stasiun). Jumlah biomassa dan stok karbon di area yang tidak mengalami kerusakan (57,67 ton/ha dan 26,50 ton/ha), area yang rusak (23,40 ton/ha dan 10,74 ton/ha, dan area yang rusak berat (9,49 ton/ha dan 4,37 ton/ha). Kerusakan hutan mangrove berpengaruh terhadap jumlah biomassa dan stok karbon di Segara Anakan.Kata Kunci: mangrove, stok karbon, tingkat kerusakan,SegaraAnakan Cilacap</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/66</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.66</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 161-172</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/66/64</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mia Azizah, Erwin Riyanto Ardli, Eming Sudiana</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/67</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">PEMBUATAN MINYAK KELAPA MENGGUNAKAN KULIT NANAS</dc:title>
	<dc:creator>Hutagaol, Ricson P.</dc:creator>
	<dc:creator>Santi, Nina Maria</dc:creator>
	<dc:description xml:lang="en-US">The Making of Coconut Oil Using a Pineapple SkinÂ Â Â Â Â Â Â  The aim of this research was to find the right formula and making more quantity of coconut oil with fermentation method. In this research coconut milk that used was cream. The cream was mixed withs pineapple skin juice. Research was done the pre test to choose the optimum concentration, temperature and incubation time. The optimum condition produced was used to process of making coconut oil. The optimum concentration oil produced was 1: 1 at 65oCÂ  in 24 hours of incubation. Results of making coconut oils got the volume of 276 mL oil besides, thats oil was produced from cream without pineapple skin as the blank, that was produced 100mL oil. Coconut oil with pineapple skin had been analysed and having: Water content 0.5873%, waste 1.24%, free fat acid 2.31, iod number 8.51, saponification number 258.02, peroxidase number 0.591, negative pelican oil, negative heavy metal, normal organoleptic test.Based on this research could be concluded that coconut oil with pineapple skin entered to standard SNI 012902-1992.key words: coconut milk, cream, fermentation, pineapple skinÂ ABSTRAKÂ Â Â Â Â Â Â  Penelitian ini bertujuanuntuk Â memperoleh formula yang tepat dalam pembuatan minyak kelapa secara fermentasi sehingga diperoleh minyak kelapa dalam jumlah banyak. Pada penelitian ini santan yang dimanfaatkan adalah krim. Krim santan yang digunakan dicampur dengan jus kulit nanas. Dilakukan uji pendahuluan pemilihan konsentrasi, suhu dan waktu inkubasi, Kondisi optimum yang didapat selanjutnya dipakai untuk proses pembuatan minyak kelapa. Dari uji pendahuluan yang telah dilakukan maka didapatkanÂ  konsentrasi optimum untuk pembuatan minyak kelapa adalah 1:1 pada suhu 650C dengan waktu inkubasi 24 jam. Hasil penelitian pembuatan minyak kelapa menunjukkan bahwa Â volume minyak yang diperoleh 276Â  mL, selain itu juga dilakukan pembuatan minyak dengan menggunakan krim tanpa jus kulit nanas yang disebut dengan blanko, pada blanko minyak yang didapat adalah 100 mL. Minyak kelapa dengan kulit nanas yang didapat dilakukanÂ  analisisÂ  kimia minyak kelapa yaitu:Â  kadar air 0.5873%, kadar kotoran 1.24%, asam lemak bebas 2.31, bilangan iod 8.51, bilangan penyabunan 258.02, bilangan peroksida 0.591, minyak pelikan negatif, logam berbahaya negatif, dan uji organoleptik normal.Â  Berdasarkan hasil penelitian dapat diambil kesimpulan bahwa minyak kelapa yang dihasilkan dengan menggunakan kulit nanas masuk standar SNI 012902-1992.Kata Kunci: Santan kelapa, krim, fermentasi, dan kulit nanas</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/67</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.67</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 173-183</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/67/65</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Ricson P. Hutagaol, Nina Maria Santi</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/68</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">KEANEKARAGAMAN JENIS ULAT KANTONG YANG MENYERANG DI BERBAGAI PERTANAMANAN SENGON (Paraserianthes falcataria(L). Nielsen) DI PULAU JAWA</dc:title>
	<dc:creator>Anggraeni, Illa</dc:creator>
	<dc:creator>Ismanto, Agus</dc:creator>
	<dc:description xml:lang="en-US">Diversity of Bag Worm that Attack Various Plantation of Sengon (Paraserianthes falcatariac (L). Nielsen) in JavaÂ Â Â Â Â Â Â Â  Many sengon plants are cultivated in plantations forests plantation and in the people's gardens (people Â forest) in Java. In sengon cultivation, pest and diseaseproblems is one of the limiting factors and one of the pests that became the limiting factor is the bag worm. This study aimed to obtain information on the diversity of bag worm that attack sengon plants in Java. The method used in this study was a survey method and direct observations of sengon plantation in Banten, West Java, Central Java and East Java province. The results showed that the diversity of bag worms that attack the sengon (Paraserianthes falcataria (L) Nielsen) plantation at various locations on the island of Java, there were four species, namely, Pteroma sp., Clania sp., Cryptothelea sp. and Amatissa sp. who entered the order Lepidoptera-Psychidea..Keywords: bag wormsdiversity, sengon plantation, variouslocations, JavaÂ ABSTRAKÂ Â Â Â Â Â Â  Sengon banyak diusahakan di kawasan hutan tanaman, perkebunan maupun di kebun-kebun milik rakyat (hutan rakyat) di Pulau Jawa. Dalam budidaya sengon, masalah hama dan penyakit merupakan salah satu faktor pembatas dan salah satu hamaÂ  yang menjadi faktor pembatas adalah ulat kantong. Penelitian ini bertujuan untuk memperoleh informasi mengenai jenis-jenis ulat kantong yang menyerang tanaman sengon di Pulau Jawa. Metode yang digunakan dalam penelitian ini adalah metode survey dan pengamatan langsung pada pertanaman sengon di Provinsi Banten, Jawa Barat, Jawa Tengah dan Jawa Timur. Hasil penelitian menunjukkan bahwa jenis-jenis ulat kantong yang menyerang pertanaman sengon (Paraserianthes falcataria (L) Nielsen) di berbagai lokasi di Pulau Jawa ada 4 jenis yaitu, PteromaÂ  sp., Clania sp., Cryptothelea sp. dan Amatissa sp. yang masuk kelompokÂ  ordo Lepidoptera - famili Psychidae.Kata kunci : keanekaragaman ulat kantong, pertanaman sengon, berbagai lokasi, Pulau Jawa</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/68</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.68</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 184-192</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/68/66</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Illa Anggraeni, Agus Ismanto</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/69</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">PENGARUH SUHU PENGERINGAN KULIT BAGIAN LUAR DAN BAGIAN DALAM MANGGIS (Gracinia mangostana, L.) TERHADAP KANDUNGAN PROKSIMAT, ALKALOID DAN FLAVONOID</dc:title>
	<dc:creator>Widhyastini, I. G. A. Manik</dc:creator>
	<dc:description xml:lang="en-US">The Effect of Drying on The Outer and Inner Skin of Mangosteen (Gracinia mangostana, L.) for the Content of Proximate Analysis, Alkaloid and Flavanoid Â Â Â Â Â Â Â Â  Mangosteen (Garcinia mangostana,L.), is considered to be one of the leading exports commodity in which the peel has the major part (60,82% from the total weight of the fruit), the flesh of the fruit is the second (35,51), the rest are the leaf sheaths (3,67). The peel of the mangosteen is rich in antioxidant which is useful for human health and this potential hasnâ€™t been used widely. The use of the peel of mangosteen need to be furtherly reviewed.The preliminary research aimed to figure out the optimum temperature for drying the outer and the inner skin of the mangosteen as a test to obtain the content of proximate analysis, alkaloid and flavanoid. The results of the proximate test was obtained that the water content of the outer skin with temperature of 70oC ;80oC; 90oC ;100oC, was between 7% to 10% while the water content for the inner skin was between 11% to 12%, dry mass of 1% to 3%, N content between 0,1% until 0,5%, carbohydrate content between 1% until 2,5%. The results of the alkaloid test showed that all of the experiment treatments revealed positive results as well as the flavonoid test. The highest content of alkaloid and flavonoid was obtained at a temperature ofÂ  80oC to dry the outer skin of the mangosteen.Key words: proximate analysis, antioxidant ,alkaloid and flavonoid Â ABSTRAKÂ Â Â Â Â Â Â  Manggis (Garcinia mangostana,L.), merupakan salah satu primadona ekspor yang menjadi andalan Indonesia Komponen terbesar dari buah manggis adalah kulit buah (60,82% dari berat buah utuh),daging buah merupakan komponen yang kedua (35,51% ), sisanya adalah komponen daun kelopak (3,67 % ). Kulit buah manggis, kaya akan senyawa antioksidan yang sangat bermanfaat bagi kesehatan manusia dan potensi ini belum dimanfaatkan secara luas.PemanfaatanÂ  kulit buah manggis perlu dikaji lebih lanjut.Penelitian pendahuluan yang bertujuan untuk mengetahui suhu pengeringan optimalÂ  padakulit bagian luar dan kulit bagian dalam manggis terhadap kandunganproksimat, alkaloid dan flavonoid. Hasil uji proksimat diperoleh Â bahwa kadar air untuk kulit bagian luar masing-masing dengan suhu pengeringan 70oC ;80oC; 90oC ;100oCÂ  adalah berkisar dari 7 % sampai 10 % sedangkan kadar air pada kulit bagian dalam adalah berkisar dari 11 % sampai 12 %, kadar abu 1% sampai 3 %, kadar N berkisar antara 0,1 % sampai 0,5 %, kadar Karbohidrat berkisar antara 1% sampai 2,5 %. Hasil uji alkaloid menunjukkan bahwa semua perlakuan menunjukkan hasil positif demikian juga dengan hasil uji flavonoid. Kandungan alkaloid dan flavonoid terbanyak diperoleh pada pengeringan 80oC untuk kulit bagian luar dari manggis.Kata kunci: proksimat, antioksidan, alkaloid dan flavonoid</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/69</dc:identifier>
	<dc:identifier>10.31938/jsn.v3i2.69</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 3 No. 2 (2013): Sains Natural; 193-200</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v3i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/69/67</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 I. G. A. Manik Widhyastini</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/70</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">KAJIAN BANYAKNYA PUPUK KANDANG TERHADAP PERKEMBANGBIAKAN KUTU AIR (Daphnia sp.) DI RUMAH KACA SEBAGAI PAKAN ALAMI DALAM BUDIDAYA IKAN</dc:title>
	<dc:creator>Setyawan, Teddy</dc:creator>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:description xml:lang="en-US">Study of manure amount for kutu air (Daphnia sp.) reproduction in green house as natural food in fish cultureÂ Â Â Â Â Â Â Â Â  Daphnia sp. is zooplankton used as natural food fish that have a complete nutrient content and easily digested in the gastro intestinal tract because it is solid and has a thin wall, otherwise it does not cause a decline of water quality and can improve the durability of fish seed to disease or changes in water quality, because it is always in living conditions. Levels of nutrient content consists of 42.65% protein, 8% fat, fiber and ash 4%. In the farming activities either fish growth or fish hatcheries 2.58% Â and ornament fish consumption, the daphnia is very desirable as a source of natural food and fresh for fish.The research result showed that the treatment with fertilizer concentration of 3 g / l gave Â the highest average number of Daphnia sp. on the sixth day. The highest was 344,000 head in the water volume of 30 liters using aquariums in the greenhouse environment. Water quality during the study was an average water temperature of 33 Â° C and an average pH of 6.45 and the water quality was an optimum condition for the growth of Daphnia sp. There was a negative correlation significantly between the average member of Daphnia sp. with a concentration of manure and pH, but there was no correlation between the member of Daphnia sp. with the water temperature.Keywords : Daphnia sp., manure amount, natural food, fish cultureÂ ABSTRAKÂ Â Â Â Â Â Â Â  Daphnia sp. adalah zooplankton digunakan sebagai pakan alami ikan yang mempunyai kandungan gizi yang lengkap mudah dicerna dalam saluran pencernaan karena isinya padat dan mempunyai dinding yang tipis, selain itu tidak menyebabkan penurunan kualitas air dan dapat meningkatkan daya tahan benih ikan terhadap penyakit maupun perubahan kualitas air karena selalu dalam keadaan hidup dan kadar kandungan gizi terdiri dari protein 42,65 %, lemak 8 %, serat 2,58 % dan abu 4 % (Darmanto, dkk., 2000). Didalam kegiatan usaha budidaya atau pembenihan ikan baik ikan konsumsi maupun ikan hias, pakan alami ini sangat diperlukan sekali sebagai sumber makanan dari alam karena segar sesuai kesukaan ikan. Hasil penelitian bahwa perlakuan menghasilkan rata-rata jumlah Daphnia sp. pada fase stasioner hari keenam dengan konsentrasi pupuk 3 g/L merupakan perkembangbiakkanÂ  Daphnia sp. tertinggi yaitu 344.000 ekor dalam volume air 30 liter menggunakan akuarium di dalam lingkungan rumah kaca. Kualitas air selama penelitian adalah rata-rata suhu air 33 Â°C dan rata-rata pH 6,45 dan kualitas air ini merupakan kondisi optimum untuk pertumbuhan Daphnia sp. Ada korelasi negatif (berlawanan) secara nyata antara rata-rata perkembangbiakkan Daphnia sp. dengan konsentrasi pupuk kandang dan pH, tetapi tidak ada korelasi antara perkembangbiakkan Daphnia sp. dengan suhu air.Kata kunci: Daphnia sp., Konsentrasi Pupuk Kandang, pakan alami, budidaya ikan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/70</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.70</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 1-10</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/70/68</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Teddy Setyawan, Lilis Sugiarti, Supriyono Eko Wardoyo</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/71</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">KANDUNGAN  FITOKIMIA, KLOROFIL DAN BIOMASSA DAUN SEMBUNG (Blumea balsamifera) TERHADAP PENCAHAYAAN</dc:title>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Yuliani, Nia</dc:creator>
	<dc:description xml:lang="en-US">The Influence of Lighting to The Phytochemistry, Chlorophyll and Biomass Content of Sembung Leaves (Blumea balsamifera)Â Â Â Â Â Â Â  The secondary metabolite compounds on the sembung leaves are an active biopharmaceutical matter. Increase of the bio active production on field condition can be conducted by improving the plant biomass through shade and the period of lighting. The purposeÂ  of this research was to understand the influence of lighting to the phytochemical content, chlorophyll and biomass of sembung leaves that planted in the plantation area, Cogreg, Parung Bogor. The steps of this research consisted of the planting of sembung leaves in different lighting each treatment, the calculation of leaves biomass weight , the preparation of samples, the determination of the water level of samples, the phytochemical test of leaves samples and the analysis of chlorophyll content. Observation of the growth of sembung plants conducted periodically, starting from planting to the harvest. The results of statistical analysis of T test,Â  on the observation of the growth of plants period I and period II showed that the average of the high and number of leaves differ significantly between plants that use shade and without shade (sig&amp;lt;0.05). The number of leaves sembung biomass planted without shade was heavier than planted with the shade. The water level of sembung leaves sample was 9,5 %. Total chlorophyll level of sembung leaves showed that the total chlorophyll level of the sembung leaves without shade was 15,6319 mg/L, while the total chlorophyll level of the sembung leaves with shade was 20,0982 mg/L. Based on the phytochemical test showed that the secondary metabolite compound which contained in both of sembung leaves sample grown using shade or without shade did not differ significantly to flavonoid, saponin,Â  glycosides, alkaloids and terpenoid.Keywords: Blumea balsamifera, phytochemistry, chlorophyll, lightingÂ ABSTRAKÂ Â Â Â Â Â Â  Senyawa metabolit sekunder yang terdapat pada daun sembung merupakan bahan aktif biofarmaka. Pemacuan produksi bioaktif tanaman pada kondisi lapang dapat dilakukan dengan meningkatkan biomassa tanaman melalui naungan dan periode pencahayaan. Penelitian ini bertujuan untuk mengetahui pengaruh pencahayaan terhadap kandungan fitokimia, klorofil dan biomassa daun sembung yang ditanam di areal perkebunan Cogreg Parung Bogor. Tahapan penelitian terdiri atas penanaman dengan perlakuan pencahayaan yang berbeda pada setiap petak terpisah, penghitungan bobot biomassa daun, preparasi simplisia, penetapan kadar air simplisia, uji fitokimia simplisia daun dan analisis kandungan klorofil. Pengamatan pertumbuhan tanaman dilakukan secara periodikal dari mulai tanam hingga panen. Hasil statistik Uji T pada pengamatan pertumbuhan tanaman periode I &amp;amp; II menunjukkan bahwa rata-rata tinggi sembung dan jumlah daun berbeda secara signifikan antara tanaman yang menggunakan naungan dan tanpa naungan dengan nilai sig&amp;lt;0,05. Jumlah biomassa daun sembung yang ditanam tanpa naungan menghasilkan berat lebih besar dibandingkan dengan naungan. Kadar air simplisia daun sembung sebesar Â 9,5 %. Kadar klorofil total daun sembung tanpa naungan dan dengan naungan berturut-turut adalah 15,6319 mg/L danÂ  20,0982 mg/L. Kandungan senyawa metabolit sekunder simplisia daun sembung adalahÂ  flavonoid, saponin, Â glikosida, alkaloid, dan terpenoid.Kata kunci : Blumea balsamifera, fitokimia, klorofil, pencahayaan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/71</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.71</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 11-25</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/71/69</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mamay Maslahat, Nia Yuliani</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/72</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
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<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">PRODUKSI IKAN UNGGUL DI LAHAN MINAPADI SECARA INTENSIF</dc:title>
	<dc:creator>Cahyanti, Wahyulia</dc:creator>
	<dc:creator>Prakoso, Vitas Atmadi</dc:creator>
	<dc:creator>Arifin, Otong Zenal</dc:creator>
	<dc:creator>Kusmini, Irin Iriana</dc:creator>
	<dc:description xml:lang="en-US">Superior Fish Production in Intensive Paddy Cum Fish CultureÂ Â Â Â Â Â Â Â  Aquaculture development in Indonesia is expected to push forward the fish farmers entrepreneurship and competitiveness of aquaculture products in a sustainable manner through improved efficiency and cooperative advantages. Development of fisheries resources in accordance with the management and the optimal use or to provide added value of the fish itself also to provide other products. One technology that can be used is through technology in paddy cum fish culture. This study aimed to improve of land productivity through superior tilapia production in paddy cum fish culture system. In general, the best results obtained in treatment A (no treatment). Productivity of rice and fish could be enhanced by applying paddy cum fish culture Â system by 4 to 5.5 million or 10-15% per hectare rice field.Keywords: Minapadi, Productivity, Nila, FertilizerÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Pengembangan perikanan budidaya di Indonesia ke depan diharapkan dapatÂ  mendorong masyarakat perikanan/pembudidaya untuk meningkatkan jiwa kewirausahaan dan daya saing produk perikanan budidaya secara berkelanjutan melalui peningkatan efisiensi dan keunggulan koperatif. Pengembangan sumber daya perikanan yang sesuai dengan pengelolaan dan pemanfaatan yang optimal dan dapat memberikan nilai tambah selain dari ikannya itu sendiri juga produk lainnya. Salah satu teknologi yang dapat digunakan yaitu melalui teknologi minapadi. Penelitian ini bertujuan untukmeningkatkan produktivitas lahan melalui produksi ikan nila unggul dalam sistem minapadi. secara umum, hasil terbaik diperoleh pada perlakuan A (tanpa perlakuan). Dari hasil penelitian, didapatkan kesimpulan bahwa Ikan nila lebih baik pertumbuhannya dibanding mas.Secara umum hasil terbaik diperoleh dari lahan kontrol atau tanpa perlakuan. Produktivitas padi dan ikan dapat ditingkatkan dengan menerapkan sistem minapadi senilai 4-5,5 juta atau 10-15% tiap hektar sawah.Kata kunci : minapadi, produktifitas, Nila, pupuk</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/72</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.72</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 26-33</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/72/70</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Wahyulia Cahyanti, Vitas Atmadi Prakoso, Otong Zenal Arifin, Irin Iriana Kusmini</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/73</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">STUDI TENTANG SIFAT FISIS KAYU LAPIS BERMUKA POLIURETAN</dc:title>
	<dc:creator>Supriadi, Achmad</dc:creator>
	<dc:creator>Iskandar, M. I.</dc:creator>
	<dc:description xml:lang="en-US">Study on Physical Properties of Polyurethane-faced PlywoodÂ Â Â Â Â Â Â  Polyurethane plywood include one of the products of secondary plywood that does not use adhesive coating. Giving a polyurethane coating can be a surface or both surfaces intended that plywood is more beautiful and more durable. The study aimed to examine the physical properties of the polyurethane-faced plywood from three companies. The results showed an average quality appearance included in A level. dimension covered an average thickness of 3.0 mm, a length of 2,440 mm, a width of 1220.2 mm and 2727.5 mm in diagonal, the water content of 10.25% and delamination of 10 mm. All the plywood of faced polyurethane material had resistance to acids, bases and diluent. All parameters of the physical properties of the polyurethane-faced plywood met the standards of buyers from Japan. Statistically there was no significant effect on the physical properties of the original material plywood of faced polyurethane. Polyurethane coated adhesive ability of polywood as the result of this research explained why the adhesive had been used extensively in composite wood products such as plywood.Keywords: Plywood polyurethane, quality appearance, physical properties, standardÂ ABSTRAKÂ Â Â Â Â Â Â Â  Kayu lapis bermuka poliuretan termasuk salah satu produk dari kayu lapis sekunder yang tidak menggunakan pelaburan perekat. Pemberian lapisan poliuretan bisa satu permukaan atau kedua permukaannya bertujuan agar kayu lapis lebih indah dan lebih tahan lama. Studi ini bertujuan untuk mencermati sifat fisis kayu lapis bermuka poliuretan yang berasal dari tiga perusahaan penghasil kayu lapis bermuka poliuretan. Hasil penelitian menunjukkan rata-rata mutu penampilan termasuk A. dimensi meliputi rata-rata tebal 3,0 mm, panjang 2.440 mm, lebar 1.220,2 mm dan diagonal 2.727,5 mm. Kadar air 10,25% dan delaminasi 10 mm. Semua bahan kayu lapis bermuka poliuretan memiliki ketahanan terhadap asam, basa dan pengencer. Semua parameter sifat fisis kayu lapis bermuka poliuretan memenuhi standar pembeli dari Jepang. Secara statistik tidak ada pengaruh nyata asal bahan terhadap sifat fisis kayu lapis bermuka poliuretan. Kemampuan perekat poliuretan untuk pelapis sebagaimana ditunjukkan dari hasil pencermatan ini ikut menjelaskan mengapa perekat ini telah digunakan luas pada produk komposit kayu termasuk kayu lapis.Kata kunci : Kayu lapis bermuka poliuretan, mutu penampilan, sifat fisis, standar</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/73</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.73</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 34-40</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/73/71</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Achmad Supriadi, M. I. Iskandar</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/74</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
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<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">KEABSAHAN METODE ANALISIS KADAR PCMX (p-chloro m-xylenol) DALAM SABUN CAIR ANTISEPTIK</dc:title>
	<dc:creator>Nurlela, Nurlela</dc:creator>
	<dc:description xml:lang="en-US">Validity of Analysis Method for PCMX (p-chloro m-xylenol) Concentration in Antiseptic Liquid Soap Â Â Â Â Â Â Â Â  PCMX (p-chloro m-xylenol) is an active substance functioning to kill bacteria (bactericide), generally added to the formula of soap, detergents, antiseptics, disinfectants and various other products. The purpose of this study was to verify the validity of PCMX concentration analysis method in antiseptic liquid soap using High PerformanceLiquid Chromatograph (HPLC)so that it was trustworthy and could be used as a routine analysis in the Quality Assurance Laboratory of Reckitt Benckiser Indonesia Company. Parameters of analysis method performance were selectivity, linearity, instrument precision, repeatability, intermediete precision, and accuracy. The mobile phase used was a mixture of methanol and 1% v/v glacial acetat acid in de-ionized water with the ratio of 55:45. The HPLC Agilent 1200 UV detector was given the following setting: Spherisorb 5 ODS 1 coloumnÂ  (150 x 4,6) mm, flow rate 2,0 ml/min, injection volume 20 ÂµL, detection UV at 280 nm, temperature 40 0C, and run time 20 minutes. The validation result in: selectivity test, analyte (PCMX) devider peak without disturbance from other components in the sample; linearity test: r&amp;gt;0,9996; instrument precision: RSD percentage values for standard solution 0,028 mg/L and 0,036 mg/L were 0,08% and 0,45% respectively; repeatability: RSD percentage value was 0,98%; intermediate precision: the method didnâ€™t give any real difference in different analysis in adifferent execution period; and accuracy: recovery value was 108,98%. Based on the result,it could be concluded that this method of analysis was trustworthy and could be used as a routine analysis at Reckitt Benckiser Indonesia Company.Keywords: Validity of Analysis Method, PCMX (p-chloro m-xylenol), High Performance Liquid ChromatographÂ ABSTRAKÂ Â Â Â Â Â Â Â  PCMX (p-chloro m-xylenol) merupakan zat aktif yang berfungsi mematikan bakteri (bakterisida), umumnya ditambahkan ke dalam formula sabun, detergen, antiseptik, desinfektan, dan berbagai produk lainnya. Penelitian ini bertujuan untuk membuktikan keabsahan metode analisis kadar PCMX dalam sabun cair antiseptik menggunakan Kromatografi Cair Kinerja Tinggi (KCKT) sehingga layak dan dapat dipercaya untuk analisis rutin di laboratorium Quality Assurance PT Reckitt Benckiser Indonesia. Parameter kinerja metode analisis mencakup selektivitas, linieritas, presisi, dan akurasi. Fase gerak yang digunakan adalah campuran antara metanol dan larutan asam asetat glasial 1% v/v dalam de-ionized water dengan perbandingan 55:45. Pengukuran dilakukan menggunakan KCKT Agilent 1200 UV detector dengan pengaturan sebagai berikut: kolom 150 x 4,6 mm Spherisorb 5 ODS 1, kecepatan alir 2,0 mL/min, volume injeksi 20 ÂµL, panjang gelombang 280 nm, temperatur 40 0C, dan waktu analisis 20 menit. Hasil pengujian diperoleh uji selektivitas berupa peak yang mampu memisahkan analit (PCMX) dalam sampel tanpa gangguan dari komponen lain dalam sampel. Uji linieritas menghasilkan r&amp;gt;0,9996. Presisi instrumen menghasilkan % RSD untuk konsentrasi larutan standar 0,028 mg/mL dan 0,036 mg/mL berturut-turut adalah 0,08% dan 0,45%. Keterulangan menghasilkan % RSD sebesar 0,98%. Presisi antara menunjukkan bahwa metode analisis tidak memberikan hasil yang bervariasi (berbeda nyata) jika dilakukan oleh analis yang berbeda pada waktu yang berbeda dan uji akurasi menghasilkan %recovery sebesar 108,98%. Berdasarkan hasil kinerja metode analisis kadar PCMX tersebutdapat disimpulkan bahwa metode analisis ini valid, sehingga layak untuk digunakan di laboratorium Quality Assurance PT Reckitt Benckiser Indonesia.Kata Kunci: Keabsahan Metode, PCMX (p-chloro m-xylenol), Kromatografi Cair Kinerja Tinggi</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/74</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.74</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 41-50</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/74/72</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Nurlela Nurlela</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/75</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
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	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">IDENTIFIKASI DAN UJI PENGENDALIAN HAMA DAUN JABON SECARA INVITRO</dc:title>
	<dc:creator>Darmawan, Ujang W.</dc:creator>
	<dc:creator>Ismanto, Agus</dc:creator>
	<dc:description xml:lang="en-US">Identification and Control Test of Jabon Leaf Pest by InvitroÂ Â Â Â Â Â Â  One of problem in jabon (Neolamarckia cadamba [Roxb.] F. Bosser) plantation is defoliator. Identification and control effort are needed to counter this problem. This research was intended to identify pest species attacking plant and do efficacy test of several chemical and biological pesticides against the defoliator. The statistical method of efficacy was Completely Randomized Design (CRD). Two pesticides prophenophos (0,1%) and dimethoate (0,1%) as chemical based organic pesticides and Bacillus thuringiensis(0,5 g/l) as biological pesticide were tested against the defoliator. Data was analyzed using Anova and Tukey test at 95% confidence level. The result showed that pest was identified as Dysarthria quadricaudata. Chemical and biological pesticides were effective to control the pest.Keywords: Neolamarckia cadamba, Dysarthria quadricaudata, prophenophos, dimethoate, pest.Â ABSTRAKÂ Â Â Â Â Â Â  Salah satu persoalan pada hutan tanaman jabon (Neolamarckia cadamba [Roxb.] F. Bosser) adalah serangan hama perusak daun. Pengendalian diperlukan untuk mengatasi persoalan ini. PenelitianÂ  bertujuan untuk mengidentifikasi spesies hama dan melakukan efikasi beberapa jenis pestisida kimia dan organik terhadap hama ulat daun jabon (N. cadamba). Metode yang digunakan adalah rancangan acak lengkap. Dua jenis pestisida kimia berbahan profenofos (0,1%), dan dimetoat (0,1%) serta pestisida organik berbahan dasar Bacillus thuringiensis (0,5 gr/lt) diuji terhadap hama ulat daun. Data dianalisis menggunakan Anova dan uji Tukey (CI = 95%). Hasil penelitian menunjukkan bahwa spesies hama yang menyerang tanaman jabon adalah Dysarthria quadricaudata. Jenis pestisida tersebut efektif mengendalikan hama ulat daun jabon.Kata kunci: Neolamarckia cadamba, Dysarthria quadricaudata, profenofos. dimetoat, hama</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/75</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.75</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 51-57</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/75/73</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Ujang W. Darmawan, Agus Ismanto</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/76</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">EFISIENSI PENYERAPAN KULIT BUAH ATAP (Arenga pinnata) MENGIKAT ION-ION LOGAM KROMIUM DALAM LARUTAN</dc:title>
	<dc:creator>Arrisujaya, Dian</dc:creator>
	<dc:description xml:lang="en-US">The Adsorption Efficiency of Atap Fruit Shell (Arenga pinnata Merr) on remove Chromium Metal Ions from aSolutionÂ Â Â Â Â Â Â  Arenga pinnata fruit shell was dried, pulverized, and used for biosorption of Cr(III) and Cr(VI) from a solution. Column experiments were conducted to investigate the affected parameters of pH solution, particle size, chromium metal ion concentration, flow rate and amount of mass biosorbent. The maximum adsorption efficiency of metal ions Cr(III) and Cr(VI), was 47.79% and 41.47% respectively, initial metal ion concentrations of 75-100 mg/L at initial pH of 3 for Cr(VI) and initial pH of 4 for Cr(III) with the particlesize â‰¤180Î¼m and flow rate of 1-2 mL/min. Adsorption capacity will increase with increasing the number of mass biosorbent, however adsorption efficiency will decrease. An FTIR examination revealed changes between the natural and heavy metals-loaded biomaterial. Scanning electron micrograph (SEM) also revealed changes in the surface morphology of thebiomass as a result of heavy metal adsorption. Based on these results, it could be concluded that the Arenga pinnata was effective in removing heavy metal from aqueous solution and needed Â consideration for scaled-up apllication.Keywords : Arenga pinnata, heavy metals, biosorption, fourier transform infrared spectroscopy (FTIR), and scanning electron microscope (SEM)Â ABSTRAKÂ Â Â Â Â Â Â  Kemampuan penyerapan kulit buah atap (Areng pinnata) terhadap ion logam Cr(III) dan Cr(VI) dalam larutan. Metoda kolom digunakan dalam proses biosorpsi dengan parameter yang mempengaruhi efisiensi penyerapan yaitu pH larutan, ukuran partikel, konsentrasi ion logam, laju alir dan massabiosorben. Efisiensipenyerapan maksimum ion logam Cr(III) dan Cr(VI) oleh kulit buah atap masing-masing adalah 47.79% dan 41.47 % dengan konsentrasi ion logam 75-100 mg/L pada pH 3 untuk Cr(VI) dan pH 4 untuk Cr(III), ukuran partikel biosorben â‰¤180Âµm serta pada laju alir 1-2 mL/menit.Efisiensi penyerapan akan meningkat dengan penambahan massa biosorben, namunkapasitas penyerapannya akan menurun. Analisis FTIR (Fourier Transform Infra Red)digunakan untuk mengetahui membandingkan biomaterial sebelum dan sesudah berikatan dengan ion-ion logam berat.perubahan gugus fungsi pada kulit buah atap dianalisis dengan FTIR (Fourier Transform Infra Red). Sedangkan untuk melihat perubahan permukaan pada kulit buah atap digunakan SEM (Scanning Electron Microscope).Berdasarkan hasil penelitian dapat disimpulkan bahwa bahan biomaterial kulit buah atap efektif dalam menyerap logam berat dalam larutan dan biomaterial ini dapat dipertimbangkan untuk skala yang lebih lanjut.Kata kunci : Buah atap, Arenga pinnata, logam massa, biosorpsi, fourier transform infrared spectroscopy (FTIR), dan scanning electron microscope (SEM)</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/76</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.76</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 58-67</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/76/74</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Dian Arrisujaya</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/77</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
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			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">PERFORMA GENOTIP IKAN TAMBAKAN Helostoma temminckii (CUVIER, 1829) POPULASI SUMATERA, JAWA DAN KALIMANTAN DENGAN METODE RANDOM AMPLIFIED POLYMORPHIC DNA (RAPD)</dc:title>
	<dc:creator>Ath-thar, M. H. Fariduddin</dc:creator>
	<dc:creator>Putriana, Intan</dc:creator>
	<dc:creator>Soelistyowati, Dinar Tri</dc:creator>
	<dc:creator>Gustiano, Rudhy</dc:creator>
	<dc:description xml:lang="en-US">Genotype performance of Tambakan, Helostoma temminckii (Cuvier, 1829) from Sumatera, Java and Kalimantan Polulation using Random Amplified Polymorphic DNA (RAPD)Â Â Â Â Â Â Â  Tambakan, kissing gourami (Helostoma temminckii) is well known as a freshwater tropical Â species from Southeast Asia. In Indonesia, tambakan is an important commodity. However, total production of tambakan tends to decrease. Therefore, domestication has urgently to be done to solve the problem of Tambakan population. Three different tambakan populations from Sumatera, Java and Kalimantan were observed to find good genetic resources for culture activity. This study aimed to investigate the genetic variation of tambakan especially from West Java, Jambi, and South Kalimantan province using RAPD. The result showed that the highest polymorphism and heterozygosity was from South Kalimantan population among others. The three population observed had the fragment size ranged from 100- 2000 bp. The highest genetic distance was between Sumatera and Kalimantan (0,2877), while the lowest was between Kalimantan and Java (0,1961). Key words: Helostoma temminckii, genetic, heterozigosity, genetic relationshipÂ ABSTRAKÂ Â Â Â Â Â Â  Ikan tambakan (Helostoma temminckii) adalah salah satu jenis ikan air tawar yang berasal dari wilayah tropis, tepatnya Asia Tenggara. Di Indonesia ikan tambakan merupakan salah satu ikan komoditas penting. Saat ini, jumlah produksi ikan tambakan cenderung menurun. Sehingga domestikasi sangat diperlukan untuk mengatasi masalah peneurunan populasi tambakan Tiga populasi ikan tambakan dari Sumatera, Jawa dan Kalimantan diobeservasi untuk mendapatkan sumber genetic terbaik yang dapat digunakan untuk kegiatan budidaya.. Penelitian ini bertujuan untuk mengidentifikasi keragaman genetika populasi ikan tambakan Jambi, Jawa Barat dan Kalimantan Selatan menggunakan metode RAPD. Hasil menunjukkan bahwa polimorfisme dan heterosigositas tertinggi terdapat pada populasi ikan tambakan Kalimantan Selatan jika dibandingkan dengan populasi ikan tambakan lainnya. Ukuran fragmen DNA teramplifikasi berkisar antara 100-2000 bp. Jarak genetik paling jauh adalah antara populasi tambakan Sumatera dengan Kalimantan (0,2877), sedangkan jarak genetik terendah adalah tambakan Kalimantan dengan Jawa (0,1961).Kata kunci: Helostoma temminckii, genetik, heterosigositas, kekerabatan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/77</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.77</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 68-75</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/77/75</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 M. H. Fariduddin Ath-thar, Intan Putriana, Dinar Tri Soelistyowati, Rudhy Gustiano</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/78</identifier>
				<datestamp>2023-11-29T01:27:02Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">KORELASI ANTARA KELIMPAHAN VEGETASI MANGROVE DAN KERANG TOTOK Polymesoda erosa DENGAN FAKTOR LINGKUNGAN DI SEGARA ANAKAN, CILACAP</dc:title>
	<dc:creator>Azizah, Mia</dc:creator>
	<dc:description xml:lang="en-US">Correlation Between Abundance of Mangrove Vegetation and Totok Clam (Polymesoda erosa) to Environmental Factors in Segara Anakan, Cilacap Â Â Â Â Â Â Â Â Â  Segara Anakan ecosystem is one of the largest estuary in Java which has a high biodiversity. One of the biota totok clam (Polymesoda erosa ) that live in Â mangrove forests. These clams have high economic value. The study aimed to determine the correlation of abundance between mangrove community and totok clam (P. erosa) , because of Â abiotic environmental factors Â in Segara Anakan , Cilacap. Research using survey methods and sampling techniques. Sampling point were 11 stations and were 3 plot sampling respectively. The data Â analyzed using correlation analysis of BIO - ENV. The correlation value of the environmental factors and mangrove community was 0.362 , and the correlation value of the environmental factor and the abundance of P. erosa was 0.412. The correlation value of mangrove vegetation with an abundance Polymesoda erosa hadÂ  a value of 0.468.Â Keywords: correlation, mangroves, Polymesoda erosa, Segara AnakanABSTRAKÂ Â Â Â Â Â Â  Ekosistem SegaraÂ  Anakan merupakan salah satu estuaria terbesar di Pulau Jawa yang memiliki keanekaragaman hayati yang tinggi. Salah satu biota yang ada adalah kerang totok(Polymesoda erosa) yang hidup berasosiasi dalam hutan mangrove. Kerang ini memiliki nilai ekonomisÂ  yang cukup tinggi. Penelitian ini bertujuan untuk mengetahui korelasi antara kelimpahan komunitas mangrove dan kelimpahan kerang totok (P. erosa), yang disebabkan faktor lingkungan abiotik P. erosa di Segara anakan, Cilacap. Penelitian menggunakan metode survei dan teknik pengambilan sampel. Titik sampling dibuat 11 stasiun dengan tiap stasiun diambil 3 plot. Data dianalisis dengan menggunakan analisis korelasi BIO-ENV. Nilai korelasi faktor lingkungan dengan struktur komunitas mangrove sebesar 0,362, dan nilai korelasi faktor lingkungan dengan kelimpahan P. erosa sebesar 0,412. Nilai korelasi vegetasi mangrove dan kelimpahan kerang totok memiliki Â nilai sebesar 0,468.Kata kunci: korelasi, mangrove, Polymesoda erosa, Segara AnakanSegara Anakan ecosystem is one of the largest estuary in Java which has a high biodiversity. One of the biota totok clam(Polymesoda erosa ) that live in Â mangrove forests.These clams have high economic value. The study aimed to determine the correlation of abundance between mangrove community and totok clam (P. erosa) , because of Â abiotic environmental factors Â in Segara Anakan , Cilacap. Research using survey methods and sampling techniques. Sampling point were11 stations and were 3 plot sampling respectively. The data Â analyzed using correlation analysis of BIO - ENV. The correlation value of the environmental factors and mangrove community was 0.362 , and the correlation value of the environmental factor and the abundance of P. erosa was 0.412.The correlation value of mangrove vegetation with an abundance Polymesoda erosa hadÂ  a value of 0.468.Â Keywords: correlation, mangroves, Polymesoda erosa, Segara Anakan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/78</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.78</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 76-84</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/78/76</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mia Azizah</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/79</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">PEMANFAATAN BUNGKIL BIJI KARET SEBAGAI EKSTENDER PEREKAT PADA KAYU LAPIS PULAI (Alstonia angustiloba Miq.)</dc:title>
	<dc:creator>Iskandar, M. I.</dc:creator>
	<dc:creator>Supriadi, Achmad</dc:creator>
	<dc:description xml:lang="en-US">Bungkil Use as Seed Rubber Extender Gluten in Plywood Pulai (Alstonia angustiloba miq.)Â Â Â Â Â Â Â  Indonesia has the largest area of rubber trees in the world, in 2012 reached 3.5 million ha. As a producer of latex, rubber plant also produces lumber and rubber seeds. Rubber seeds have a starch content of 15.9%, so have the opportunity to be made extenders as mixing the adhesive material. This study aimed to determine the utilization of rubber seed meal as an extender adhesives Urea Formaldehyde (UF) on plywood pulai. Extender material made with varying levels of 10%, 20% and 30% respectively of the weight of the liquid adhesive. Variations intended use extenders levels in order to know the quality of plywood produced from a wide variety of levels of these extenders. The results showed that the average moisture content of plywood island 7.97%, density of 0.485 g / cm3, and the bonding strength of 11.36 kg / cm2. The water content and the bonding strength of plywood pulai ware designed to meet the Indonesian National Standard. Statistically analysis levels extenders very significant effect on the bonding strength of plywood pulai. The higher levels of extenders, bonding strength of plywood pulai tends to decrease. Plywood pulai that has the best bonding strength value was the use of extender content of 10%.Keywords: extenders, adhesives, rubber seed meal, plywood, quality pulaiABSTRAKÂ Â Â Â Â Â Â Â  Indonesia memiliki areal tanaman karet terluas di dunia, pada tahun 2012 mencapai 3,5 juta ha. Sebagai penghasil getah, tanaman karet juga menghasilkan kayu dan biji karet. Biji karet memiliki kandungan pati 15,9 %, sehingga berpeluang untuk dibuat ekstender sebagai bahan pencampur perekat. Penelitian ini bertujuan untuk mengetahui pemanfaatan bungkil biji karet sebagai ekstender perekat Urea Formaldehida (UF) pada kayu lapis pulai. Bahan ekstender dibuat dengan kadar bervariasi yaitu 10 %, 20 % dan 30 % masing-masing dari bobot perekat cair. Variasi penggunaan kadar ekstender bertujuan agar dapat diketahui mutu kayu lapis yang dihasilkan dari berbagai variasi kadar ekstender tersebut. Hasil penelitian menunjukkan bahwa rata-rata kadar air kayu lapis pulai 7,97 %, kerapatan 0,485 gr/cm3, dan keteguhan rekat 11,36 kg/cm2. Kadar air dan keteguhan rekat kayu lapis pulai yang dibuat memenuhi Standar Nasional Indonesia. Secara statistik kadar ekstender berpengaruh sangat nyata terhadap keteguhan rekat kayu lapis pulai. Makin tinggi kadar ekstender, keteguhan rekat kayu lapis pulai cenderung berkurang. Kayu lapis pulai yang memiliki nilai keteguhan rekat terbaik adalah yang menggunakan ekstender kadar 10 %.Kata kunci : Ekstender, perekat, bungkil biji karet, kayu lapis, kualitas pulai</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-01</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/79</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i1.79</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 1 (2014): Sains Natural; 85-91</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/79/77</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 M. I. Iskandar, Achmad Supriadi</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/80</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">PEMANFAATAN TALAS BOGOR (Colocasia esculenta (L) Schoot) SEBAGAI LARVASIDA NYAMUK</dc:title>
	<dc:creator>Widhyastini, I. G. A. Manik</dc:creator>
	<dc:creator>Hutagaol, Ricson P.</dc:creator>
	<dc:description xml:lang="en-US">Use of Bogor Taro (Colocasia esculenta (L)) Schoot Â as a Mosquito LarvacideÂ Â Â Â Â Â Â  The case of dengue fever in Indonesia is still a major issue. Various efforts have been made towards the controllingof mosquitoes which have succeeded either chemically or naturally. Colocasia esculenta (L.)Schott (Bogor taro) have the potential to be a larvacide to exterminate mosquito larva. Taro is one of the many plants used as a source of non-rice carbohydrate that contains a high amount of nutrients, taro also contains anti nutrition .The purpose of this research was to harness waste from the Bogor taro harvest in which the use of the leaves and stem. Generally, the leaves and stem of taro is used as food for cattle as well as the presence of anti nutrition.The result of the phytochemical analysis had shown that taroÂ  (Colocasia esculenta (L) Schott), consists ofÂ  anti nutrition substance, other than calcium oxalate, saponin, tannin, flavonoid, thereby potentially beingÂ  a larvacide. During the preliminary test, a LC50 with a magnitude of 83 ppm was obtained for the concentration of the stem extract and 61,75 ppm for the leaf extract. The leaf extract had a stronger ability than the stem extract for it can could 50% of the sample being testedKey words: larvacide, antinutritrion,metabolite secondaryÂ ABSTRAKÂ Â Â Â Â Â Â  Kasus demam berdarah dengue (DBD) di Indonesia, masih sangat mengkhawatirkan. Berbagai upaya pengendalian terhadap kerapatan populasi nyamuk telah dilakukan baik secara kimia maupun alamiah. Colocasia esculenta (L.)Schott (talas Bogor) berpotensi sebagai larvasida untuk membunuh larva nyamuk.Talas merupakan salah satu tanaman sumber karbohidratÂ  non beras yang bergizi tinggi. Tetapi talas juga memiliki zat antinutrisi. Penelitian ini bertujuan memanfaatan limbah hasil panen talas Bogor yang berupa daunÂ  dan batang yang masih terbatas penggunaannya, umumnya digunakan sebagai makanan ternak. Hasil uji fitokimiaÂ  bahwaÂ  talas Bogor, mengandungÂ  zat antinutrisi diantaranya, kalsium oksalat, saponin, tannin, dan flavonoid, adanya kandungan senyawa ini menunjukkan bahwa batang dan daun talas berpotensi sebagai larvasida. Pada uji pendahuluan perhitungan nilai profit diperolehÂ  persamaan regresiÂ  linier, peroleh hasil prediksi nilai LC 50 sebesar 83 ppm merupakan kemampuan konsentrasi dari ekstrak batang yang mampu membunuh 50 %Â  larva uji dan 61,75 ppm merupakan konsentrasi dari ekstrak daun yang mampu membunuh larva uji dalamÂ  hal ini adalah larva nyamuk stadium III. Berdasarkan hasil tersebut, bahwa ekstrak daun talas mempunyai kemampuan yang lebih kuat dalam membunuh 50 %Â  larvaÂ Â  uji daripada ekstrak batang talas.Kata Kunci: larvasida, antinutritrion,metabolite secondary</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/80</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.80</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 92-97</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/80/78</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 I. G. A. Manik Widhyastini, Ricson P. Hutagaol</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/81</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
	http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
	<dc:title xml:lang="en-US">DAYA PREDASI IKAN CUPANG (Betta splendens) DAN IKAN GUPPY (Poecilia reticulate) TERHADAP LARVA INSTAR III NYAMUK Aedes aegypti  SEBAGAI UPAYA PENGENDALIAN VEKTOR PENYAKIT DEMAM BERDARAH DENGUE (DBD)</dc:title>
	<dc:creator>Mutmainah, Siti</dc:creator>
	<dc:creator>Prasetyo, Eko</dc:creator>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:description xml:lang="en-US">Beta Fish Predation Power and Guppies Against the Third Instar Larvae of Mosquitos as a Vector Control Efforts in Dengue FeverÂ Â Â Â Â Â Â Â  Dengue Hemorrhagic Fever (DHF) disease was a disease caused by dengue virus infection remains a public health problem in Indonesia. The disease attacks all age groups every years. Effort to eradication DHF done by fulfill the predator of fish like cupang and guppy. The study to determined the difference of predation potential between betta and guppy toward the 3rd instar of larvae Aedes aegypti. This study was experimental with comparative study and one shoot chase study design. The population was larvae of Aedes aegypti mosquito 3rd instar with betta and guppy as many as 5. Every treatment used the larvae as many as 25. The treatment observe in 1, 2 , 4 and 6 hours the data analyze used the independent samples test. The results of independent samples test got the p value 0.000, proves there were the significantly difference of predation potential of betta and guppy toward the 3rd instar III of Larvae Aedes aegypti mosquito. Suggested to the society can used the predator fish to eradication the DHF disease. Keywords: The potential of predator fish Cupang (Betta sp.), Guppy (Poecilia reticulata), 3rd instar of larvae, Aedes aegypti.Â ABSTRAKÂ Â Â Â Â Â Â  Demam Berdarah Dengue (DBD) merupakan penyakit yang disebabkan oleh virus dan ditularkan oleh nyamuk Aedes aegypti yang masih menjadi masalah kesehatan masyarakat di Indonesia. Penyakit ini menyerang semua kelompok umur dan muncul setiap tahun. Pengendalian DBD dilakukan dengan memanfaatkan ikan seperti ikan cupang dan guppy. Penelitian ini bertujuan untuk mengetahui perbedaan Â daya predasi Â ikan cupang (Betta sp.) dan ikan guppy (Poecilia reticulata) terhadap larva instar III nyamuk Aedes aegypti. Jenis penelitian ini adalahÂ  eksperimental bersifat komparatif dengan desain one shoot chase study. Subyek penelitian adalah larva nyamuk Aedes aegypti instar III, ikan cupang dan guppy masing-masing sebanyak 5 ekor. Setiap waktu pengamatanÂ  menggunakan larva instar III sebanyak 25 ekor dan diulang sebanyak 5 kali. Pengamatan dilakukan selama 1, 2, 4 dan 6 jam. Analisis data menggunakan independent samples test. Hasil uji Independent Samples Test didapatkan nilai p value 0.000, membuktikan adanya perbedaan yang bermakna antara daya predator ikan cupang (Betta sp.) dengan ikan guppy (Poecilia reticulata) terhadap larva instar III nyamuk Aedes aegypti. Daya predator paling baik adalah Â ikan cupang. Disarankan kepada masyarakat untuk memanfaatkan ikan predator dalam upaya mengendalikan penyakit Demam Berdarah.Kata Kunci: daya predator ikan cupang (Betta sp.), ikan guppy (Poecilia reticulata), larva instar III nyamuk Aedes aegypti.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/81</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.81</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 98-106</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/81/79</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Siti Mutmainah, Eko Prasetyo, Lilis Sugiarti</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/82</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">EFEKTIFITAS ASAM HUMAT DAN ARANG AKTIF TEMPURUNG KELAPA DALAM MENGADSORBSI RESIDU INSEKTISIDA ENDOSULFAN DI DALAM TANAH LATOSOL BOGOR</dc:title>
	<dc:creator>Nurhayati, Lany</dc:creator>
	<dc:creator>Sutamihardja, RTM</dc:creator>
	<dc:creator>Rudiarto, Linggar</dc:creator>
	<dc:description xml:lang="en-US">Effectiveness of Humic Acid and Active Charcoal of Coconut Shell on Adsorbtion the Residual Insecticide Endosulfan in Latosol Soil, Bogor Â Â Â Â Â Â Â  In the study of humic acid and coconut shell activated charcoal (AATK) soaked in Humic Acid (5% and 10%) was left to dry for three days. The soil weighed as much as 10 grams mixed with activated charcoal soaked humic acid 5% and 10% by series concentration of 500 ppm; 1000 ppm and 1500 ppm, then added 20 mL of distilled water in each row shaken for one night, the soil was conditioned by the concentration of the insecticide endosulfan series: 12:05, 0,1, 0,2, 0,4, 0,8 and 1 ppm, did incubation. Example decanted, added 10 mL of acetone pa, filtered and then added with acetone as much as 10 mL, the extract was evaporated to 1 mL, then added by 10 mL acetone gradually. Results extract transferred into sample vials to be tested by using GC. Based on the analysis, it found residues of the insecticide endosulfan in Bogor Latosol soil with a concentration of 0.0005 ppm. The addition of coconut shell activated charcoal individually had a significant effect in reducing the content of endosulfan in soil, while the addition of humic acid individually did not have an appreciable impact in reducing residues of endosulfan in soil latosol. Insecticide endosulfan residues were able to be adsorbed by AATK and humic acid was 500 ppm and 10% (A500H10) of 0,12178a ppm. The combination AATK and humic acids provide a real impact on the content of endosulfan residues in the soil latosol Bogor that could adsorb residual content in the soil.Keywords: Organochlorines Insecticide Endosulfan, Humic Acid, Coconut Shell Charcoal On Land Latosol BogorÂ ABSTRAKÂ Â Â Â Â Â Â  Pada penelitian asam humat dan arang aktif tempurung kelapa (AATK) direndam dalamÂ  Asam Humat (5% dan 10%)Â  dibiarkan sampai mengering selama tiga hari.Tanah ditimbang sebanyak 10 gram dicampurkan dengan arang aktif yang sudah direndam asam humat 5% dan 10% dengan deret konsentrasi 500 ppm; 1000 ppm dan 1500 ppm, kemudian ditambahkan 20 mL aquades pada masing deret dikocok selama satu malam, tanah dikondisikan dengan deret konsentrasi insektisida endosulfan : 0,05, 0,1, 0,2, 0,4, 0,8 dan 1 ppm, lakukan inkubasi. Contoh didekantasi, ditambahkan aseton paÂ  10 mL, disaring kemudian ditambahkan dengan aseton sebanyak 10 mL, hasil ekstrak dievaporasi sampai 1 mL, kemudian ditambahkan aseton sebanyak 10 mL secara bertahap. Hasil Ekstrak dipindahkan kedalam botol sampel untuk diuji dengan menggunakan GC. Berdasarkan hasil analisis, masih ditemukan residu insektisida endosulfan di tanah Latosol Bogor dengan konsentrasi 0,0005 ppm. Penambahan arang aktif tempurung kelapa secara individual memiliki pengaruh yang cukup signifikan dalam mengurangi kandungan endosulfan dalam tanah, sedangkan penambahan asam humat secara individual tidak memiliki pengaruh yang cukup besar dalam mengurangi kandungan residu endosulfan dalam tanah latosol. Residu insektisida endosulfan terbaik mampu diadsorbsi oleh AATK dan asam humat adalah 500 ppm dan 10% (A500H10) sebesar 0,12178a ppm. Kombinasi AATK dan asam humat memberikan pengaruh yang nyata terhadap kandungan residu endosulfan didalam tanah latosol bogor sehingga dapat mengadsorbsi kandungan residu didalam tanah.Kata Kunci:Â  Insektisida Organoklorin Endosulfan, Asam Humat, Arang Aktif Tempurung Kelapa, Tanah Latosol Bogor</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/82</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.82</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 107-114</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/82/80</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Lany Nurhayati, RTM Sutamihardja, Linggar Rudiarto</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/83</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">OPTIMASI PERLAKUAN POLYETHYLENE GLIKOL (PEG) 6000 TERHADAP ISOLASI AGAROSA RUMPUT LAUT Glacilaria sp.</dc:title>
	<dc:creator>Martinah, Siti</dc:creator>
	<dc:creator>Sutamihardja, RTM</dc:creator>
	<dc:creator>Sugiarti, Lilis</dc:creator>
	<dc:description xml:lang="en-US">Optimation of Polyethylene Glycol (PEG) 6000 Treatment on Isolation of Agarose Seaweeds of Glacilaria spÂ Â Â Â Â Â Â Â  Isolation of agarose from seaweeds (Glacilaria sp) had been done in acid, base, and neutral condition by using polyethylene glycol (PEG) method. Glacilaria sp, Seaweeds that used in this research was cultured by farmer in Muara Gembong, Bekasi. It used PEG with concentration 10%, 15%, 20%, 25%, &amp;amp; 30%. The scope of this research ware determination of seaweeds, seaweeds water content, isolation of agarose from seaweeds, and quality test of agarose. Parameter test of agarose quality includeÂ  the strength of gel, the content of sulfat, measurement of galactose content and its proksimat. The high yield was 61,27% r Â in PEG 30%. The best quality of agarose was resulted in PEG 20% because of the highest strength of gel was 379,04 g/cm2.The lowest sulfat concentration was 1,33% and galactose was 17,39%.Key words: polyethylene glycol, PEG 6000, agarose, seaweeds, glacilaria spÂ ABSTRAKÂ Â Â Â Â Â Â Â  Isolasi agarosa dari rumput laut Glacilaria sp telah dilakukan dalam suasana asam, basa dan netral dengan metode polyethylene glikol (PEG). Rumput lauat yang digunakan adalah Gracilaria sp yang dibudidayakan oleh petani di Muara Gembong, Bekasi dengan perlakuan konsentrasi PEG 10%, 15%, 20%, 25% dan 30%. Ruang lingkup penelitian ini meliputi uji determinasi rumput laut, penetapan kadar air rumput laut, isolasi agarosa dari rumput laut, serta uji kualitas agarosa. Parameter pengujian kualitas agarosa terdiri dari kekuatan gel, kandungan sulfat, dan pengukuran kandungan galaktosa serta proksimatnya. Isolasi agarosa perlakuan konsentrasi polyethylene Glikol (PEG) 6000 pada rumput laut Glacilaria sp diperoleh rendemen paling tinggi terdapat pada perlakuan PEG 30% yaitu sebesar 61,27%. Akan tetapi untuk kualitas agarosa yang paling baik terdapat pada perlakuan konsentrasi PEG 20% karena diperoleh kekuatan gel paling tinggi sebesar 379,04 g/cm2. Kadar sulfat yang paling rendah sebesar 1,33% dan kadar galaktosa sebesar 17,39%.Kata Kunci: polyethylene glikol, PEG 6000, agarosa, rumput laut, glacilaria sp</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/83</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.83</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 115-128</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/83/81</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Siti Martinah, RTM Sutamihardja, Lilis Sugiarti</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/84</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">PEMANFAATAN LIMBAH PRODUKSI KAKAO UNTUK PAKAN BENIH IKAN NILA (Oreochromis niloticus)</dc:title>
	<dc:creator>Prakoso, Vitas Atmadi</dc:creator>
	<dc:creator>Firmanto, Hendy</dc:creator>
	<dc:creator>Kurniawan, Kurniawan</dc:creator>
	<dc:description xml:lang="en-US">Utilization of Waste Production of Cocoa for Tilapia Fish (Oreochromis niloticus) Seed Feed Â Â Â Â Â Â Â Â Â  Problems often arise in fish farming is the cost of artificial feed (pellets) which is expensive. The availability of local feed ingredients are still very limited and reliance on imports causing feed prices to rise. Therefore we need research to find alternative raw materials that can substitute fish meal price is relatively cheaper, widely available, and do not compete with cattle and human needs. Raw materials include cocoa shell waste derived from cocoa plantations. This study aimed to evaluate the use of cocoa shell waste for growing out of Â tilapia fish (Oreochromis niloticus). The study was conducted at the Center for Research and Development of Freshwater Aquaculture, Bogor. When the study will be conducted over two months. The fish used were tilapia fish 7-8 cm size were maintained on media aquarium measuring 50 Ã— 40 Ã— 40 cm. In addition, the feed given that the result of the fortification of rind cocoa powder, cocoa seed shell powder, rice bran, tapioca flour, water and salt. Commercial feed was also used in this study as a comparison. Feed given as much as 3% of the total biomass of fish in each aquarium. Every two weeks the data Â collection of body length and weight of fish seeds were measured. The data would be observed that the length and absolute weight, specific growth rate (SGR), increase biomass and fish survival rate. The results of this study indicated that tilapia fish fed the formulation of cocoa waste could not achieve the growth of fish with commercial feed. Further studies on cocoa waste hopely be better to produce fish seeds which same growth with the growth of fish fed by commercial feed.Key words: Feed, waste of cocoa, tilapia, Oreochromis niloticusÂ ABSTRAKÂ Â Â Â Â Â Â Â  Permasalahan yang sering muncul pada usaha budidaya ikan yaitu biaya pakan buatan (pellet).yang mahal. Ketersediaan bahan baku pakan lokal masih sangat terbatas dan ketergantungan pada impor menyebabkan harga pakan meningkat. Oleh karena itu diperlukan penelitian untuk mencari alternatifÂ  bahan baku yang dapat menjadi substitusi tepung ikan dengan harga yang relatif murah, banyak tersedia, dan tidak bersaing dengan kebutuhan ternak dan manusia. Bahan baku tersebut antara lain limbah kulit kakao yang berasal dari perkebunan kakao. Penelitian ini bertujuan untuk mengevaluasi pemanfaatan limbah kulit kakao untuk pembesaran benih ikan nila (Oreochromis niloticus). Penelitian dilakukan di Balai Penelitian dan Pengembangan Budidaya Air Tawar, Bogor. Waktu penelitian akan dilaksanakan selama 2 bulan. Ikan yang digunakan yaitu benih ikan nila ukuran 7-8 cm yang dipelihara pada media akuarium berukuran 50 Ã— 40 Ã— 40 cm. Selain itu, pakan yang diberikan yaitu hasil fortifikasi dari serbuk kulit buah kakao, serbuk kulit biji kakao, dedak padi, tepung tapioka, air, dan garam. Pakan komersil juga digunakan dalam penelitian ini sebagai pembanding. Pakan diberikan sebanyak 3% dari total biomassa ikan pada masing-masing akuarium. Tiap 2 minggu dilakukan pengambilan data panjang dan bobot tubuh benih ikan yang diuji. Data yang akan diamati yaitu pertambahan panjang dan bobot mutlak, laju pertumbuhan spesifik (SGR), pertambahan biomass, dan sintasan ikan uji. Hasil penelitian ini menunjukkan bahwa benih ikan nila yang diberi pakan formulasi dari limbah kakao belum dapat mencapai pertumbuhan yang setara dengan pakan komersial. Perlu penelitian lebih lanjut mengenai formulasi pakan limbah kakao yang lebih baik lagi agar mampu menghasilkan pertumbuhan benih ikan yang seimbang dengan pertumbuhan ikan yang diberi pakan komersial.Kata Kunci: Pakan, Limbah kakao, Nila, Oreochromis niloticus</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/84</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.84</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 129-134</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/84/82</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Vitas Atmadi Prakoso, Hendy Firmanto, Kurniawan Kurniawan</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/85</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">ANALISIS VEGETASI GULMA PADA PERTANAMAN JAGUNG DAN HUBUNGANNYA DENGAN PENGENDALIAN GULMA DI LAMBUNG BUKIT, PADANG, SUMATERA BARAT</dc:title>
	<dc:creator>Oksari, Ade Ayu</dc:creator>
	<dc:description xml:lang="en-US">The Vegetation Analysis of Weeds in Corn (Zea mays L.) Plantation and Its Conjunction with Weed Control in Lambung Bukit, Padang, West SumatraÂ Â Â Â Â Â Â Â  Research about the vegetation analysis of weeds in corn (Zea mays L.) plantation and its conjunction with weed control in Kelurahan Lambung Bukit, Padang, West Sumatra had been conducted from March to Juny 2011 by using systematic squares method of 10 total plots with size 1x1 m2. It was found consist of 10 families, 15 genera,16 species and 1892 individuals weeds. Spermacoce alata (Rubiaceae) showed the highest value of Summed Dominance Ratio (23,17%) and the lowest rate of SDR Hedyotis sp., Cyperus cephalotes and Amaranthus sp. (0,65%). The diversity index of the weeds was H'= 1,2005 (moderate). Integrated weed management is a concept that prioritizes natural control by creating environmental conditions that not favorable for the development of weeds and improve the competitiveness of crops against weeds.Keywords: Weeds, corn, composition, structure, controlÂ ABSTRAKÂ Â Â Â Â Â Â Â  Penelitian mengenai analisis vegetasi gulma pada pertanaman jagung dan hubungannya dengan pengendalian gulma di Kelurahan Lambung Bukit, Padang, Sumatera Barat telah dilaksanakan dari bulan Maret sampai Juni 2011. Penelitian dilakukan dengan menggunakan Metode Kuadrat sebanyak 10 plot dengan ukuran 1x1 m2. Pada penelitian ini didapatkan 10 famili, 15 genus, 16 jenis, dan 1892 individu gulma. Gulma yang memiliki nilai SDR tertinggi yaitu gulma jenis Spermacoce alata famili (Rubiaceae) dengan nilai Summed Dominance Ratio (SDR) Â 23,17 % dan nilai SDR terendah Hedyotis sp., Cyperus cephalotes dan Amaranthus sp. (0,65%). Nilai indeks dari keanekaragaman jenis gulma berada pada nilai Hâ€™ = 1,2005 (sedang). Pengelolaan gulma terpadu merupakan konsep yang mengutamakan pengendalian secara alami dengan menciptakan keadaan lingkungan yang tidak menguntungkan bagi perkembangan gulma dan meningkatkan daya saing tanaman terhadap gulmaKata Kunci: Gulma, Jagung, Komposisi, Struktur, Pengendalian</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/85</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.85</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 135-142</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/85/83</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Ade Ayu Oksari</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/86</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">OPTIMASI WAKTU PENGERINGAN TERHADAP AKTIVITAS ANTIOKSIDAN EKSTRAK ETANOL RIMPANG TEMU PUTIH (Curcuma aromatica Salisb)</dc:title>
	<dc:creator>Yuliani, Nia</dc:creator>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Lestari, Puji</dc:creator>
	<dc:description xml:lang="en-US">Optimization of The Drying Time of The Anti-Oxidant Activity of The Ethanol Extract of The Rhizomes of Temu Putih (Curcuma aromatica Salisb)Indonesia is a tropical country that has many varieties of medicinal herbal plants. One of them is Curcuma aromatica Salisb. It has a secondary metabolite that acts as an antioxidant. The metabolite will degrade if it goes through a long drying process. The Curcuma aromatica Salisb rhizome is dried at a temperature of 65oC with variant time durations : 22, 23, 24, 25 and 26 hours. The dried rhizome is extracted with ethanol as the solvent and the results are 14.16%, 11,89%, 15,95%, 12,10% dan 11,97% respectively. Phytochemical test shows the existence of alkaloids and flavonoids in the extract. The measurement of antioxidant activity is done using the DPPH method with a spectrophotometer at 517 nm wavelength. The result is then compared to Quercetin as the positive control. The IC50Â  values of Quercetin, extracts of Curcuma after 22, 23, 24, 25 and 26 hours after drying respectively are 6,47Âµ g/ml , 160,54Âµ g/ml, 133,17Âµ g/ml, 117,81Âµ g/ml, 144,69 Âµ g/ml, dan 157,7 Âµ g/ml. The extracts after 23-25 hours of drying have medium antioxidant levels, while the ones with 22 and 26 hours of drying have low antioxidant levels. The duration of drying affects the antioxidant activity of Curcuma aromatica salisb extract. The highest value of IC50 is achieved on the positive control of Quercetin and followed by the Curcuma extract with 24 hours of drying.Key words : ethanol, Curcuma aromatica salisb, drying duration, antioxidant activityÂ ABSTRAKIndonesia merupakan negara tropis yang memiliki berbagai macam tanaman obat. Salah satunya adalah temu putih (Curcuma aromatica Salisb). Temu putih mengandung senyawa metabolit sekunder yang bermanfaat sebagai antioksidan. Senyawa metabolit sekunder akan rusak bila dikeringkan dengan waktu yang lama.Rimpang temu putih dikeringkan pada suhu 65oC dengan variasi waktu 22, 23, 24, 25 dan 26 jam. Simplisia temu putih diekstrak dengan pelarut etanol diperoleh rendemen berturut-turut, 14,16%, 11,89%, 15,95%, 12,10% dan 11,97%. Uji Fitokimia menunjukkan adanya alkaloid dan flavonoid pada ekstrak etanol rimpang temu putih. Penentuan aktivitas antioksidan dilakukan dengan metode DPPH menggunakan spektrofotometer pada panjang gelomban g 517 nm. Hasilnya dibandingkan dengan Kuersetin sebagai kontrol positif. Nilai IC50 Kuersetin, ekstrak etanol rimpang temu putih 22, 23 24, 25 dan 26 jam berturut-turut adalah 6,47Î¼g/ml , 160,54Î¼g/ml, 133,17Î¼g/ml, 117,81Î¼g/ml, 144,69 Î¼g/ml, dan 157,7 Î¼g/ml. Ekstrak etanol rimpang temu putih pengeringan 23-25 jam memiliki aktivitas antioksidan sedang, sedangkan pengeringan 22 dan 26 jam memiliki aktivitas antioksidan lemah. Lama proses pengeringan mempengaruhi aktivitas antioksidan ekstrak etanol rimpang temu putih. IC50 terbaik diperoleh pada standar positif Kuersetin kemudian pada ekstrak etanol rimpang temu putih pengeringan 24 jam.Kata Kunci : etanol, Curcuma aromatica Salisb, lama pengeringan, aktivitas antioksidan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/86</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.86</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 143-151</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/86/84</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Nia Yuliani, Mamay Maslahat, Puji Lestari</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/87</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">EFEKTIFITAS PENGIKATAN LOGAM Pb OLEH BAKTERI, Bacillus subtilis</dc:title>
	<dc:creator>Inggraini, Maulin</dc:creator>
	<dc:description xml:lang="en-US">Effectiveness of Heavy Metal (Pb) Binding of Bactery Bacillus subtilisÂ Â Â Â Â Â Â  The rapid development of technology and industries lead to higher environmental pollution by heavy metals, especially Pb. Reduction of heavy metals is commonly done using chemical and physical approach. Another alternative is biological technique which is more efficient due to its higher metal binding and readily available as materials. Bacillus subtilis was a potential bacterium in reducing heavy metal contamination. This study aimed to determine the B. subtilis binding effectiveness of Pb; to test the bacterial tolerance to Pb at varied concentrations; and to detect the accumulation sites of Pb within Â B. subtilis. The results showed that B. subtilis was able to bind Pb with the effectiveness percentage Â of 17.45%. Pb was accumulated in the cell walls.Keyword: Bacillus subtilis, Pb binding Â ABSTRAKÂ Â Â Â Â Â Â Â  Pesatnya perkembangan teknologi dan industri menyebabkan pencemaran lingkungan yang lebih tinggi dengan logam berat, terutama Pb. Pengurangan logam berat yang biasanya dilakukan dengan menggunakan bahan kimia dan pendekatan fisik. Alternatif lain adalah teknik biologi yang lebih efisien karena logam yang lebih tinggi mengikat dan tersedia sebagai bahan. Bacillus subtilis adalah bakteri potensial dalam mengurangi kontaminasi logam. Penelitian ini bertujuan untuk mendeterminasi B. subtilis yang efektivitas mengikat Pb; untuk menguji toleransi bakteri terhadap Pb pada konsentrasi yang bervariasi; dan untuk mendeteksi akumulasi Pb dalam Bacillus subtilis. Hasil penelitian menunjukkan bahwa B. subtilis mampu mengikat Pb dengan efektivitas persentase 17,45%. Pb terakumulasi dalam dinding sel.Kata Kunci : Bacillus subtilis, pengikatan Pb</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/87</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.87</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 152-156</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/87/85</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Maulin Inggraini</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/88</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">PENGARUH TEMPERATUR PEREBUSAN JERAMI TERHADAP SIFAT FISIS MEKANIS PAPAN PARTIKEL</dc:title>
	<dc:creator>Iskandar, M. I.</dc:creator>
	<dc:description xml:lang="en-US">Effect of Temperature of Straw Boiling on Mechanical and Physical Properties of Particle BoardÂ Â Â Â Â Â Â Â Â  Levels of extractive substances in the straw as much as 10-15% and 12-18% silica content respectively. Two of these substances can inhibit good adhesion bonding between the particles during the sealing process. Treatment of straw boilingÂ  before gluing process can reduce the negative effects of extractive substances to the bonding adhesive. The purpose of this study was to determine the effect of temperature of the boiling straw on mechanical and physical properties of particle board. The tested physical properties included density, moisture content, thickness swelling and water absorption while the mechanical properties tested included flexural modulus, fracture modulus, internal bonding strength and screw holding strength. Analysisof statistic of the data used was Complete Random Design (RAL). The treatment consisted of a five-level with three replications so that the total number of trials was fifteen. To determine the effect of treatment carried out the Analysis of Variance. To determine the effect of treatment was significantly different would do a further test the Duncan's multiple range test. Processing data using SAS software, version 6123. The results showed an increase in the temperature of straw boiling was very significant and fluctuative on the properties of particle board and the moisture content, thickness swelling 24 hours, flexural modulus (MOE), fracture modulus (MOR), but did not significant affect the density and internal bonding strength. Boiling temperature 40â°C on straw produce panels with the best qualities. The properties of particle board research results that met the requirements of Standard JIS A 5908: 215 only the density and moisture content.Keywords: temperature, boiling, straw, mechanical physical propertiesÂ ABSTRAKÂ Â Â Â Â Â Â Â  Kadar zat ekstraktif dalam jerami sebanyak 10-15% dan kadar silika 12-18%. Dua zat tersebut dapat menghambat ikatan rekat yang baik antar partikel pada waktu proses perekatan. Perlakuan perebusan jerami sebelum proses perekatan dapat mengurangi pengaruh negatif zat ekstraktif terhadap ikatan rekat. Tujuan penelitian ini adalah untuk mengetahui pengaruh temperatur perebusan jerami terhadap sifat fisis mekanis papan partikel. Sifat fisis yang diuji meliputi kerapatan, kadar air, pengembangan tebal dan daya serap air sedangkan sifat mekanis yang diuji meliputi modulus lentur, modulus patah, keteguhan rekat internal dan kuat pegang sekrup. Analisis statistik data yang digunakan adalah Rancangan Acak Lengkap (RAL). Perlakuan terdiri dari lima taraf dengan ulangan sebanyak tiga sehingga jumlah total percobaan adalah lima belas. Untuk mengetahui pengaruh dari perlakuan dilakukan analisis ragam (Analysis of Variance). Untuk mengetahui pengaruh berbeda nyata perlakuan dilakukan uji lanjut dengan uji wilayah berganda Duncan. Pengolahan data menggunakan software SAS versi 6.123. Hasil penelitian menunjukkan peningkatan temperatur perebusan jerami berpengaruh sangat nyata dan fluktuatif terhadap sifat-sifat papan partikel dan kadar air, pengembangan tebal 24 jam, modulus lentur (MOE), modulus patah (MOR), tetapi tidak berpengaruh nyata terhadap kerapatan dan keteguhan rekat internal. Perebusan jerami pada suhu 40â°C menghasilkan panil dengan sifat-sifat terbaik. Sifat-sifat papan partikel hasil penelitian yang memenuhi persyaratan Standar JIS A 5908:215 hanya kerapatan dan kadar air.Kata kunci: temperatur, perebusan, jerami, sifat fisis dan mekanis</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/88</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.88</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 157-164</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/88/86</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 M. I. Iskandar</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/89</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">INSIDEN  PENYAKIT PADA KECAMBAH SENGON (Falcataria moluccana (Miq.) Berneby and J.W Grimes) DAN UJI PATOGENITAS</dc:title>
	<dc:creator>Anggraeni, Illa</dc:creator>
	<dc:creator>Darmawan, Ujang W.</dc:creator>
	<dc:creator>Ismanto, Agus</dc:creator>
	<dc:description xml:lang="en-US">The Insidence of The Desease in Sengon Plant Sprouts and Patogenicity TestsÂ Â Â Â Â Â Â Â  Plant diseases commonly attack in nursery. The symptoms of attack are seed or seedling rot while in media or after weaning to bag. The aims of research were to describe the symptom of disease and identify the causing agent by postulate Koch examination. The research was conducted in laboratory and nursery as long as four months. Basic method were exploring the disease symptom and examining of disease by postulate Koch. Data was then analyzed descriptively. Results showed the disease symptom was damping off (Lodoh) characterizing, fell down, wilted and rot, performing flashed hot water (Lodoh). This attack categorized as post emergence damping-off level. The causing agent was identified as fungi Fusarium sp. It had three spore typically microconidia, macroconidia dan clamidospore.Key words: damping off, disease, moluccana, nursery, seedling.Â ABSTRAKÂ Â Â Â Â Â Â Â  Pada proses persemaian tanaman, insiden serangan penyakit sering terjadi. Salah satu gejala serangan yang timbul adalah pembusukan pada biji atau semai yang ditabur di media semai atau pasca penyapihan tanaman. Akibat serangan tersebut tingkat kematian tanaman dapat mencapai 80%. Tujuan dari penelitian ini adalah untuk menggambarkan gejala serangan penyakit dan mengidentifikasi penyebab primer dari penyakit tersebut melalui uji postulat Koch. Penelitian dilakukan di laboratorium dan persemaian selama 4 bulan. Metode dasar yang digunakan adalah eksplorasi untuk mengetahui gejala serangan penyakit dan eksperimen untuk pengujian postulat koch. Data dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa gejala yang ditunjukkan oleh semai sengon adalah akibat serangan penyakit lodoh (damping off) dengan cirri semai rebah, layu dan seperti tersiram air panas (lodoh). Serangan penyakit ini tergolong pada fase post emergence damping-off. Hasil identifikasi menunjukkan bahwa fungi penyebab penyakit ini adalah Fusarium sp. Fungi ini menghasilkan tiga jenis spora yaitu mikrokonidia, makrokonidia dan klamidospora.Kata kunci: lodoh, moluccana, penyakit, persemaian, semai.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/89</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.89</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 165-171</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/89/87</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Illa Anggraeni, Ujang W. Darmawan, Agus Ismanto</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/90</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">ANTIBAKTERI EKSTRAK KULIT BUAH MANGGIS (Garcinia mangostana L.)</dc:title>
	<dc:creator>Srikandi, Srikandi</dc:creator>
	<dc:creator>Widhyastini, I.G.A. Manik</dc:creator>
	<dc:description xml:lang="en-US">Antibacterial Extract of Mangosteen (Garcinia mangostana L.)Fruit Shell Â Â Â Â Â Â Â Â Â  The skin of the mangosteen fruit is extracted with n-hexane and ethyl acetate to determine the Minimum Inhibitory Concentration (MIC) against Staphylococcus aureus ATCC 25923 and Pseudomonas aeruginosa ATCC 27 853. Results showed that n-hexane extract gave inhibition zone larger than the ethyl acetate extract on all concentrations . Extract n-hexane has a value of MIC against S. aureus ATCC bacterial test 25923 62.5 mg / ml while the ethyl acetate extract of 125 mg / ml . N- hexane extracts had MIC values of the test bacteria P.aeuroginosa ATCC 27 853 was 125 mg / ml , and while the ethyl acetate extract had a MIC value of 500 mg / ml . Treatment of solvent, concentration and interaction between the solvent and concentration significantly affected the test bacteria ATCC 25923 S. aureus at the level of 5 %, the highest interaction N-Hexane solvent with a concentration of 15,625 mg / ml and was not significantly different interactions with the concentration of 31.25 mg/ml and 125 mg/ml. Treatment solvent and concentration significantly while the interaction between the solvent and the concentration has no effect on the test bacteria P.aeuroginosa ATCC 27 853 at 5% level .Keywords: Garcinia mangostana L., Staphylococcus aureus and Pseudomonas aeruginosaÂ ABSTRAKÂ Â Â Â Â Â Â Â Â Â  Kulit buah manggis diekstrak dengan n-heksan dan etil asetatÂ Â  untuk mengetahui Konsentrasi Hambat Minimum (KHTM) terhadap bakteri Staphylococcus aureus ATCC 25923 dan Pseudomonas aeruginosa ATCC 27853. Hasil penelitian menunjukkan bahwa ekstrak n-heksana Â memberikan zona hambatan lebih besar dibandingkan dengan ekstrak etil asetat pada semua konsentrasi. Ekstrak n-heksanaÂ  memiliki nilai kadar hambat minimal (KHM) terhadap bakteri uji S. aureus ATCC 25923Â  62,5 mg/ml sedangkan ekstrak etil asetat 125 mg/ml.Â Â  Ekstrak n-heksana memiliki nilai KHMÂ Â  terhadap bakteri uji P.aeuroginosaÂ  ATCC 27853 adalah 125 mg/ml danÂ  sedangkan ekstrak etil asetat memiliki nilai KHMÂ  500 mg/ml. Perlakuan pelarut, konsentrasi dan interaksi antara pelarut dan konsentrasiÂ  berpengaruh nyata terhadap bakteri uji S. aureus ATCC 25923 pada taraf 5%, interaksi tertinggi yaitu pelarut N-Heksan dengan konsentrasi 15,625mg/ml dan interaksi ini tidak berbeda nyata dengan konsentrasi 31,25 mg/ml dan 125 mg/ml. Perlakuan pelarut dan konsentrasiÂ  berpengaruh nyata sedangkan interaksi antara pelarut dan konsentrasiÂ  tidak berpengaruh terhadap bakteri uji P.aeuroginosaÂ  ATCC 27853 pada taraf 5%.Â Kata kunci: Â Garcinia mangostana L., Staphylococcus aureus dan Pseudomonas aeruginosa</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/90</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.90</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 172-179</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/90/88</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Srikandi Srikandi, I.G.A. Manik Widhyastini</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/91</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">ANALISIS KIMIA KAYU KARET ( Heavea brasiliensis Muell. Arg. ) DIAWETKAN SECARA TRADISIONAL</dc:title>
	<dc:creator>Ismanto, Agus</dc:creator>
	<dc:creator>Saputro, Yudi Dwi</dc:creator>
	<dc:description xml:lang="en-US">Chemical Analysis of Wood Rubber (Heavea brasiliensis Muell. Arg.) Preserves in TraditionalÂ Â Â Â Â Â Â Â  Rubber wood (Hevea brasiliensis Muell.Arg.) is one type of wood is not preserved, so it is easily attacked by wood destroying insects such as dry powder beetles, dry wood termites, termites, and ambrosia beetles. To solve this problem was the preservation of wood, both in traditional or modern. The preservation of wood in the traditional way, such as by immersion in water, boiling and steaming. In this research, analysis of levels of starch, cellulose and lignin in rubber wood, marinated, boiled or steamed. The goal was to determine the levels of starch, cellulose and lignin in rubber wood that has been given the treatments compared to the control. Soaking process conducted for 3, 7 and 14 days. While boiling and steaming during 0.5, 1 and 2 hours. The analyzes were performed with Luff-Schoot method for the determination of levels of starch and Chesson method for determination of cellulose and lignin. Strach and lignin analysis results indicated a declining trend in treatment for soaking, boiling and steaming compared with controls. But not so in the levels of cellulose. The conclusion was soaking in water for 7 days or boiling or steaming for 1 hour already could lower levels of starch.Keywords: rubber wood, traditional preservation, starch, cellulose, lignin.Â ABSTRAKÂ Â Â Â Â Â Â  Kayu karet ( Hevea brasiliensis Muell.Arg. ) merupakan salah satu jenis kayu yang tidak awet, sehingga mudah diserang oleh serangga perusak kayu seperti kumbang bubuk kering , rayap kayu kering, rayap tanah, dan kumbang ambrosia. Untuk mengatasi masalah tersebut perlu dilakukan pengawetan kayu baik secara tradisional maupun modern. Pengawetan kayu dengan cara tradisional, antara lain dengan cara perendaman dalam air , perebusan dan pengukusan. Pada penelitian ini dilakukan analisa kadar pati, selulosa dan ligninÂ  pada kayu karet yang direndam , direbus atau dikukus. Tujuannya adalah untuk mengetahui kadar pati, selulosa dan lignin pada kayu karet yang sudah diberi perlakuan tersebut dan dibandingkan dengan kontrol. Proses perendaman yang dilakukan selama 3, 7 dan 14 hari. Sedangkan perebusan dan pengukusan selama 0,5 , 1 dan 2 jam. Analisa dilakukan dengan metode Luff-Schoot untuk penetapan kadar pati dan metode Chesson untuk penetapanÂ  kadar selulosa dan lignin. Hasil analisa kadarpati dan lignin menunjukkan adanya kecenderungan penurunan pada perlakuan perendaman , perebusan dan pengukusan dibandingkan dengan kontrol. Tetapi tidak demikian pada kadar selulosanya. Kesimpulannya adalah perendaman dalam air selama 7 hari atau perebusan atau pengukusan selama 1 jam sudah dapat menurunkan kadar pati.Kata kunci : kayu karet, pengawetan tradisional, pati, selulosa, lignin.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/91</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.91</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 180-186</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/91/89</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Agus Ismanto, Yudi Dwi Saputro</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/92</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">PENGARUH KONSENTRASI PEKTIN DALAM SUHU DAN WAKTU PENYIMPANAN BERBEDA TERHADAP KARAKTERISTIK PELEMBAB KULIT</dc:title>
	<dc:creator>Fitriani, Herlina Eva</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:creator>Syawaalz, Amry</dc:creator>
	<dc:description xml:lang="en-US">Effect of Concentration of Pectin in Different Temperature and Storage Time on Characteristics of Skin MoisturizingÂ Â Â Â Â Â Â  The use of pectin as a substituent a synthetic material in the manufacture of skin moisturizers can support the reuse of natural ingredients for skin care . This study aimed to obtain optimum concentrations in the preparation of skin moisturizers and to see the characteristics of skin moisturizer with the addition of the pectin concentration . The result showed the optimum concentration of pectin in the preparation of moisturizing the skin with a concentration of 0.05 % with a characteristic appearance ( viscosity ) was most preferably , the pH value of 7.08 ; a specific gravity of 0.98 g / ml ; viscosity of 2229 cP , emulsion stability of 100 % , and there was no microbial contamination in accordance with the standard of quality of skin moisturizersKeyword:. Pectin, concentration, characteristics, skin moisturizingÂ ABSTRAKÂ Â Â Â Â Â Â Â  Penggunaan pektin sebagai pensubstitusi bahan sintetik dalam pembuatan pelembab kulit dapat mendukung penggunaan kembali bahan-bahan alami untuk perawatan kulit. Penelitian ini bertujuan untuk mendapatkan konsentrasi optimum dalam sediaan pelembab kulit dan mempelajari karakteristik pelembab kulit dengan penambahan konsentrasi pektin.Â  Hasil penelitian didapatkan konsentrasi optimum pektin dalam sediaan pelembab kulit dengan konsentrasi 0,05 % dengan karakteristik penampakan (kekentalan) yang paling disukai, nilai pH 7,08; bobot jenis 0,98 g/ml; viskositas 2229 cP, stabilitas emulsi 100 %, dan tidak terdapat cemaran mikroba sesuai dengan syarat mutu pelembab kulit..Kata kunci: Pektin, konsentrasi, karakteristik, pelembab kulit</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/92</dc:identifier>
	<dc:identifier>10.31938/jsn.v4i2.92</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 4 No. 2 (2014): Sains Natural; 187-200</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v4i2</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/92/90</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Herlina Eva Fitriani, Supriyono Eko Wardoyo, Amry Syawaalz</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/93</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">EKSTRAKSI PADAT-CAIR ZnO DENGAN ASAM DARI DEBU FILTER PROSES PEMBUATAN BAJA</dc:title>
	<dc:creator>Hutagaol, Ricson P.</dc:creator>
	<dc:creator>Nasrudin, Nasrudin</dc:creator>
	<dc:creator>Taufik, Agus</dc:creator>
	<dc:description xml:lang="en-US">ZnO Solid â€“ Liquid Extraction with Filter Dust Acid from The Steel Making ProccessÂ Â Â Â Â Â Â Â Â Â  Zinc Oxide is a white metal oxide which is widely used in various industries. Zinc oxide can be produced with the direct, indirect process (method of France) and hydrometallurgical. Source manufacture ZnO derived from material containing zinc metal. The content of ZnO in the dust filter in the steel making process as a potential raw material for the manufacture of ZnO. The purpose of this study was to determine the type of acid and concentration were better for extraction ZnO viewed from purity and the yield. This research was conducted by method of Â solid-liquid extraction, followed by the presipitation process. Testing of purity of ZnO with better extraction result were H2SO4 0,75 M was 89.67% with a yield of 97.73%, while the H2SO4 0,50 M was 80.45% (yield 63.96%), H2SO4 0,25 M was 76,48% (46.95% yield), HCl 0,75 M was 79.23% (81.70% yield), HCl 0,50 M was 76.98% (yield 49%), and HCl 0,25 M was 74.57% (30.23% yield). ZnO composition data from extraction results were analyzed using X-ray fluorescence (XRF).Key words: Solid-liquid extraction, ZnO, Dust, Steel, XRFÂ ABSTRAKÂ Â Â Â Â Â Â Â Â Â Â Â  Seng Oksida merupakan oksida logam berwarna putih yang banyak digunakan di berbagai industri. Seng oksida dapat diproduksi dengan proses langsung, proses tidak langsung (metode Prancis) dan hidrometalurgi. Sumber pembuatan ZnO berasal dari material yang mengandung logam seng. Kandungan ZnO dalam debu filter pada proses pembuatan baja berpotensi sebagai bahan baku untuk pembuatan ZnO. Tujuan dari penelitian ini adalah menentukan jenis asam dan konsentrasi yang lebih baik untuk ekstraksi ZnO dilihat dari kemurnian dan rendemennya. Penelitian ini dilakukan dengan metode ekstraksi padat-cair Â yang dilanjutkan dengan proses pengendapan. Pengujian kemurnian ZnO hasil ekstraksi yang lebih baik yaitu H2SO4 0,75 M adalah 89,67% dengan rendemen 97,73%, sedangkan H2SO4 0,50 M adalahÂ  80,45% (rendemen 63,96), H2SO4 0,25 M adalah 76,48% (rendemen 46,95%), HCl 0,75 M adalah 79,23% (rendemen 81,70%), HCl 0,50 M adalah 76,98% (rendemen 49%), dan HCl 0,25 M adalah 74,57% (rendemen 30,23%). Data komposisi hasil ekstraksi ZnO yang dianalisis menggunakan X-ray fluorescence (XRF).Kata Kunci : Ekstraksi padat-cair, ZnO, Debu Baja, XRF</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/93</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.93</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 1-8</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/93/91</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Ricson P. Hutagaol, Nasrudin Nasrudin, Agus Taufik</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/94</identifier>
				<datestamp>2023-11-29T01:27:03Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">KARAKTERISTIK PAPAN PARTIKEL DARI BULU DOMBA, SERBUK GERGAJI DAN SERUTAN KAYU DENGAN PEREKAT UREA FORMALDEHIDA</dc:title>
	<dc:creator>Iskandar, M. I.</dc:creator>
	<dc:creator>Supriadi, Achmad</dc:creator>
	<dc:description xml:lang="en-US">Particle Board Characteristics of Fur Sheep, Sawdust and Wood Shavings with Urea Formaldehyde AdhesiveÂ Â Â Â Â Â Â Â  Particle board is a board made of particles of wood or other berlignoselulosa bonded with adhesive, then felted heat. Particle board excess, which uses industrial waste materials, uniform size and density, uniform thick and density, the character and quality can be set. This study aims to investigate the characteristics of particle board from sheep's wool, sawdust and wood shavings. The experimental design used was completely randomized design (CRD) with two factors and repeated three times. The first factor combination of pollen fleece (B), with sawdust sengon (G) and wood shavings sengon (S), namely B0G60S40 : (0% : 60% : 40%), B10G50S40 : (10% : 50% : 40%), B20G40S40 : (20% : 40% : 40%), B30G30S40 : (30% : 30% : 40% and the second factor consists of the physical properties (density, moisture content, thickness swelling and water absorption) and character of mechanical factor (flexural strength, modulus of elasticity, perpendicular and surface strength and straight screw holding). The results of the research were to produce a density value was between 0.69 to 0.78 g/cm3, water content with an average of 6.49%, a value between 32.36 to 83.9% thickness swelling, water absorption between 89,04- 169.15%, the flexural strength values between 68.4 to 121.8 kgf/cm2, elastic modulus was between 671.84 to 1381.51 kgf/cm2, the value of tensile strength perpendicular of the surface was between 0.44 to 1.3 kgf/cm2and screw holding strength value was between 6.0 to 22.3 kg. the higher use of powder fleece might degrade the quality of particle board, otherwise use the higher adhesive could improve the quality of particle board. The study of particle board and fleece, saws and wood shavings was on average below of the national Indonesia standard, except for the density and moisture content, for flexural strength was only partially standard value.Key words: fleece, characteristics, particle board, sawdust, wood shavings.Â ABSTRAKÂ Â Â Â Â Â Â Â Â  Papan partikel merupakan suatu papan yang terbuat dari partikel-partikel kayu atau bahan berlignoselulosa lainnya yang diikat dengan perekat, kemudian dikempa panas. Kelebihan papan partikel, yaitu menggunakan bahan limbah industri, ukuran dan kerapatan seragam, tebal dan kerapatan seragam, sifat dan kualitasnya dapat diatur. Penelitian ini bertujuan untuk mengetahui karakteristik papan partikel dari bulu domba, serbuk gergaji dan serutan kayu. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) pola faktorial dengan dua faktor dan ulangan sebanyak tiga kali. Faktor pertama kombinasi serbuk bulu domba (B), dengan serbuk gergaji kayu sengon (G) dan serutan kayu sengon (S), yaitu B0G60S40 : (0% : 60% : 40%), B10G50S40 : (10% : 50% : 40%), B20G40S40 : (20% : 40% : 40%), B30G30S40 : (30% : 30% : 40%) dan faktor kedua terdiri dari sifat fisis (kerapatan, kadar air, pengembangan tebal dan daya serap air) dan sifat mekanis (kuat lentur, modulus elastisitas, kuat tarik tegal lurus permukaan dan kuat pegang sekrup). Hasil penelitian menghasilkan nilai kerapatan antara 0,69-0,78 g/cm3, nilai kadar air dengan rata-rata 6,49%, nilai pengembangan tebal antara 32,36-83,9%, daya serap air antara 89,04-169,15%, nilai kuat lentur antara 68,4-121,8 kgf/cm2, nilai modulus elastisitas antara 671,84-1381,51 kgf/cm2, nilai kuat tarik tegak lurus permukaan antara 0,44-1,3 kgf/cm2 dan nilai kuat pegang sekrup antara 6,0-22,3 kg. penggunakan serbuk bulu domba yang semakin tinggi dapat menurunkan kualitas papan partikel, sebaliknya penggunaan perekat yang semakin tinggi dapat meningkatkan kualitas papan partikel. Penelitian papan partikel dan bulu domba, gergaji dan serutan kayu rata-rata di bawah standar nasional Indonesia, kecuali untuk kerapatan dan kadar air, untuk kuat lentur hanya sebagian yang masuk standar.Kata kunci : bulu domba, karakteristik, papan partikel, serbuk gergaji, serutan kayu.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/94</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.94</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 9-16</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/94/92</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 M. I. Iskandar, Achmad Supriadi</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/95</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">EFIKASI DESTILAT KAYU NANGKA (Artocarpus integra Merr.) TERHADAP RAYAP KAYU KERING (Cryptotermes cynocephalus Light)</dc:title>
	<dc:creator>Ismanto, Agus</dc:creator>
	<dc:description xml:lang="en-US">Efficacy of jackfruit wood destilate (Artocarpus integra Merr.) against dry-wood termites (Cryptotermes cynocephalus Light)Â Â Â Â Â Â Â Â Â  Wood is organic material that is susceptible to dry wood termite attack Cryptotermes cynocephalus Light. To protect it from the attack, the wood is commonly preserved with chemicals. The chemicals preservative is not eco-friendly material. In order to explore the alternatives of preservatives, distillate extracted from jack fruit (Artocarpus integra Merr.) wood was tested against the termite. The research aimed to examine the effectiveness of distillate against termite in term of retention, termite mortality and protection degree parameter. Sample test is rubber (Hevea brasiliensis Muell.Arg.) wood with dimension 5 cm x 2,5 cm x 2 cm. Samples were soaked into distillate according to concentration i.e. 5%; 15%; 45% and 65% for 2 and 5 days. Experiment was designed with complete random design with 4 replications. The research showed that retention and termite mortality were positively correlated with distillate concentration whereas soak duration influenced retention. Protection degree did not differ from control. We conclude various distillate concentration influenced retention and termite mortality but not protection degree of wood.Key words: mortality, protection degree, retentionABSTRAKÂ Â Â Â Â Â Â Â  Kayu merupakan bahan organik yang mudah diserang oleh rayap kayu kering Cryptotermes cynocephalus Light. Untuk melindungi kayu dari serangan rayap tersebut biasanya kayu diawetkan dengan menggunakan bahan kimia sintetik. Bahan pengawet kayu termasuk bahan kimia yang tidak ramah lingkungan. Dalam rangka mencari alternatif bahan pengawet kayu ramah lingkungan, maka dicoba destilat kayu nangka (Artocarpus integra Merr.). Penelitian ini bertujuan untuk mengetahui efektivitas destilat kayu nangka terhadap retensi, mortalitas dan derajat proteksi dari serangan rayap kayu kering C. cynocephalus. Contoh uji yang digunakan adalah kayu karet (Hevea brasiliensis Muell.Arg.) dengan ukuran 5 cm x 2,5 cm x 2 cm yang direndam dalam cairan destilat kayu nangka dengan konsentrasi 5%; 15%; 45% dan 65% selama 2 dan 5 hari. Di samping itu disediakan contoh uji kontrol. Percobaan menggunakan Rancangan Acak Lengkap faktorial dengan 4 ulangan. Parameter yang diukur adalah retensi, mortalitas rayap kayu kering dan derajat proteksi. Hasil penelitian menunjukkan bahwa nilai retensi dan mortalitas meningkat sesuai dengan peningkatan konsentrasi. Sedangkan lama perendaman hanya berpengaruh terhadap retensi. Derajat proteksi tidak berbeda nyata antara perlakuan dengan kontrol. Kesimpulannya adalah perbedaan konsentrasi destilat hanya berpengaruh terhadap retensi dan mortalitas rayap kayu kering tetapi tidak terhadap derajat proteksi.Â Â Â  Kata kunci: Derajat proteksi, retensi, mortalitas</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/95</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.95</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 17-23</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/95/93</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Agus Ismanto</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/96</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">KARAKTERISTIK  FISIOLOGI EMPAT ANTAGONIS ISOLAT Trichoderma sp. SEBAGAI AGENSIA HAYATI</dc:title>
	<dc:creator>Sulistiyono, Fitria Dewi</dc:creator>
	<dc:description xml:lang="en-US">Characteristics of Four Physiology Antagonists Isolate of Trichoderma spp. as Biological AgentsÂ Â Â Â Â Â Â Â  Trichoderma sp is soil saprophyte, one of many parasites that causing plants disease. The purpose of this study was to determine the temperature and pH growth of Trichoderma sp. This study was designed with the experimental method. The treatments were the temperature factor with five levels (temperature 15, 20, 25, 30, and 35 Â°C) and pH factor with five levels (pH 4, 5, 6, 7, and 8). All treatments were prepared according to completely randomized design factorial 5x5. Repetition was done 3 times. The results showed that Trichoderma sp. able to grow at pH 4, 5, 6, 7, and 8 and it also grow at temperatures of 15, 20, 25, 30 and 35oC.Keywords: Trichoderma sp, Four Physiology Antagonists, Biological AgentsÂ ABSTRAK Â Â Â Â Â Â Â Â  Trichoderma sp. adalah saprofit tanah, secara alami merupakan parasit yang menyerang banyak jenis penyebab penyakit tanaman. Tujuan dari penelitian ini adalah mengetahui suhu dan pH tumbuh Trichoderma sp. Penelitian ini dirancang dengan metode eksperimen. Perlakuan yang dicoba adalah faktor suhu dengan lima taraf (suhu 15, 20, 25, 30, dan 35oC) dan faktor pH dengan lima taraf (pH 4, 5, 6, 7, dan 8). Semua perlakuan disusun menurut Rancangan Acak Lengkap pola faktorial 5x5. Pengulangan dilakukan sebanyak 3 kali. Hasil penelitian menunjukan bahwa Trichoderma sp. mampu tumbuh pada pH 4, 5, 6, 7, dan 8. Trichoderma sp. Juga mampu tumbuh pada suhu 15, 20, 25, 30 dan 35oC.Kata kunci: Trichoderma sp, fisiologi empat antagonis, agensia hayati</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/96</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.96</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 24-29</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/96/94</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Fitria Dewi Sulistiyono</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/97</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">OPTIMASI PENGGUNAAN GARAM ELEKTROLIT SEBAGAI PENGENTAL SAMPO BENING CAIR</dc:title>
	<dc:creator>Kurniawati, Yulia</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:creator>Arizal, Ridha</dc:creator>
	<dc:description xml:lang="en-US">Optimization Use of Electrolyte Salt as a Thickenerin of Clear-Liquid ShampooÂ Â Â Â Â Â Â Â Â  A wide variety of activities undertaken by humans to meet their needs. They are needed cleaning which makes the body refreshed and become the body protected from various kinds of diseases. One sample is the cleaning shampoo. Simply in shampoo manufacturing process only the addition of materials in water as a solvent. The ingredients that are added generally include surfactants, binding agents, foaming agents, antibacterial, pH regulators, fragrances, dyes, and thickeners.The last process of manufacture of shampoo is setting viscosity. Usually, a substance used as a thickener are electrolyte salts such as sodium chloride (NaCl). However, some manufacturers of similar products using strong electrolyte salt such as sodium sulfate (Na2SO4), magnesium chloride (MgCl2), and calcium chloride (CaCl2) as a thickener. The electrolyte salts have a greater degree of dissociation compared with a weak electrolyte salts.Analysis of optimization of the use of the electrolyte salt to clear viscous liquid shampoo was performed in which the electrolyte salt used was NaCl, KCl, Na2SO4, CaCl2, and NaHSO4. Each of these electrolyte salts were added to the liquid shampoo preparations as much as 0; 0.5; 1.5; 2.5; 3.5; 4.5; 5.5; 6.5; and 7.5%. All treatments were tested the viscosity, organoleptic (color and odor), pH, and density at 250 C. Based on the research that had been done could be concluded that the best salt that could be used to clear liquid shampoo formulation Â was NaCl at a concentration above 3.5%.Key words: Shampoo, electrolyte salts, surfactantsÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Berbagai macam kegiatan dilakukan oleh manusia untuk memenuhi kebutuhannya. Dibutuhkan suatu pembersih yang menjadikan badan segar kembali dan menjadikan tubuh terhindar dari berbagai macam penyakit. Salah satu pembersih dimaksud adalah sampo. Secara sederhana proses pembuatan sampo meliputi penambahan bahan-bahan dengan air sebagai pelarutnya. Bahan-bahan yang ditambahkan pada umumnya meliputi surfaktan, zat pengikat, zat pembusa, antibakteri, pengatur pH, pewangi, pewarna, dan pengental.Proses terakhir dari pembuatan sampo adalah pengaturan kekentalan. Biasanya zat yang digunakan sebagai pengental adalah garam elektrolit seperti natrium klorida (NaCl). Namun beberapa perusahaan pembuat produk sejenis menggunakan garam elektrolit kuat lain seperti natrium sulfat (Na2SO4), magnesium klorida (MgCl2), dan kalsium klorida (CaCl2) sebagai pengental. Garam-garam elektrolit tersebut memiliki derajat disosiasi yang lebih besar dibandingkan dengan garam-garam elektrolit lemah.Analisis optimasi penggunaan garam elektrolit terhadap kekentalan sampo bening cair dilakukan dimana garam elektrolit yang digunakan adalah NaCl, KCl, Na2SO4, CaCl2, dan NaHSO4. Masing-masing garam elektrolit tersebut di tambahkan ke dalam sediaan sampo cair sebanyak 0; 0,5; 1,5; 2,5; 3,5; 4,5; 5,5; 6,5; dan 7,5 %. Semua perlakuan di lakukan uji kekentalan, organoleptik (warna dan bau), pH, dan Bobot Jenis pada suhu 25 0 C. Berdasarkan hasil penelitian yang telah dilakukan dapat disimpulkan bahwa garam terbaik yang dapat digunakan untuk formulasi sampo bening cair adalah NaCl yaitu pada konsentrasi diatas 3,5%.Kata Kunci : Sampo, Garam Elektrolit, Surfaktan</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/97</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.97</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 30-41</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/97/95</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Yulia Kurniawati, Supriyono Eko Wardoyo, Ridha Arizal</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/98</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">SERANGAN HAMA DEFOLIATOR PADA POLA TANAM MONOKULTUR DAN AGROFORESTRI JABON</dc:title>
	<dc:creator>Utami, Sri</dc:creator>
	<dc:creator>Ismanto, Agus</dc:creator>
	<dc:description xml:lang="en-US">Defoliator Pest Attack on Monoculture and Agroforestry Planting Patterns of JabonÂ Â Â Â Â Â Â  Jabon (Anthocephalus spp.) is one of the local plant species in Indonesia that have the potential to be developed in forest plantation as well as for other purposes, such as mined-land reclamation, reforestation and tree shade, because growth is very fast, the ability adaptation on various site conditions and silvicultural treatment is relatively easy. This species is also expected to become increasingly important to the timber industry in the future, especially when the raw material for construction timber from natural forests is to be on the wane. This plant has long time cultivated by society in almost all parts of Indonesia either by monoculture and mixture such as agroforestry. One of the obstacles of this type is their defoliator pests. This study aimed to identify the type of pest defoliator which attacking red Jabon (A. macrophyllus Roxb. Havil) and white Jabon (A. cadamba Miq.) 8 months aged were planted in monoculture or agroforestry (paddy-rice plants). The study was conducted on August to December 2014 in Sumber Mekar Mukti and Sukatani Village, Tanjung Lago Subdistrict, Banyuasin County, South Sumatera Province. The results showed that the types of pests that attack plant red Jabon was Moduza procris Cramer (Lepidoptera: Nymphalidae) with an attack percentage of 45.5%. While on the plant, namely white Jabon was Arthroschista hilaralis Walk with an attack percentage of 86%. As for the pattern of agroforestry between red Jabon, white Jabon and rice found only pests of A. hilaralis with an attack percentage of 5%. This shows that agroforestry cropping pattern could suppress pest attack in the plant of Jabon.Key words: pest, red Jabon, white Jabon Â ABSTRAKÂ Â Â Â Â Â Â Â  Jabon (Anthocephalus spp.) merupakan salah satu jenis tumbuhan lokal Indonesia yang berpotensi untuk dikembangkan dalam pembangunan hutan tanaman maupun untuk tujuan lainnya, seperti reklamasi lahan bekas tambang, penghijauan dan pohon peneduh, karena pertumbuhannya yang sangat cepat, kemampuan beradaptasinya pada berbagai kondisi tempat tumbuh, serta perlakuan silvikulturnya yang relatif mudah. Jenis ini juga diharapkan menjadi semakin penting bagi industri perkayuan di masa mendatang, terutama ketika bahan baku kayu pertukangan dari hutan alam diperkirakan akan semakin berkurang. Tanaman ini sudah lama dibudidayakan masyarakat hampir di seluruh wilayah Indonesia baik dengan pola tanam monokultur maupun campuran seperti agroforestri. Salah satu kendala dalam budidaya jenis ini yaitu adanya serangan hama defoliator. Penelitian ini bertujuan untuk mengidentifikasi jenis hama defoliator yang menyerang tegakan jabon merah (A. macrophyllus Roxb. Havil) dan jabon putih (A. cadamba Miq.) umur 8 bulan yang ditanam secara monokultur maupun agroforestri (dengan tanaman padi). Penelitian dilakukan pada Bulan Agustus sampai Desember 2014 di Desa Sumber Mekar Mukti dan Desa Sukatani, Kecamatan Tanjung Lago, Kabupaten Banyuasin, Provinsi Sumatera Selatan. Hasil penelitian menunjukkan bahwa jenis hama defoliator yang menyerang tegakan jabon merah yaitu Moduza procris Cramer (Lepidoptera : Nymphalidae) dengan persentase serangan sebesar 45,5%. Sedangkan pada tegakan jabon putih yaitu Arthroschista hilaralis Walk dengan persentase serangan sebesar 86%. Adapun pada pola agroforestri antara jabon merah, jabon putih dan padi hanya dijumpai serangan hama A. hilaralis dengan persentase serangan sebesar 5%. Hal ini menunjukkan bahwa pola tanam agroforestri mampu menekan serangan hama pada tegakan jabon.Kata kunci : hama, jabon merah, jabon putih</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/98</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.98</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 42-48</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/98/96</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Sri Utami, Agus Ismanto</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/99</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">PENGARUH STRESSOR SUHU DAN SALINITAS TERHADAP PERKEMBANGAN EMBRIO IKAN NILEM (Osteochilus hasselti)</dc:title>
	<dc:creator>Prakoso, Vitas Atmadi</dc:creator>
	<dc:creator>Kurniawan, Kurniawan</dc:creator>
	<dc:description xml:lang="en-US">Effects of Temperature and Salinity as Stressors on Embryo Development of Hard-Lipped Barb (Osteochilus Hasselti)Â Â Â Â Â Â Â Â Â  Exposure to environmental stressors on fish is an aspect of concern to researchers because its effects can be detrimental to metabolism, growth, disease resistance, reproductive ability, health, and survival of the fish. Although, according to the researchers that stress can be bad for the fish, but this stress phenomenon remains to be studied more deeply. Based on this information, this paper is made to assess the effects of environmental stressors on fish, especially in hard-lipped barb (Osteochilus hasselti) on the embryonic developmental stages. The data collected comes from the results of research conducted at Institute for Freshwater Aquaculture Research and Development (IFARD), Bogor. This paper discussed about temperature and salinity as environmental stressors related to development of early life stage of hard-lipped barb. Hatching, mortality, and survival rates were the indicators of environmental stressors decisive influence on the development of the embryo. In addition, the observation of embryonic development through the microscope is also used as supporting data. Based on research data, it was concluded that environmental stressors such as temperature and salinity beyond the limits of tolerance could interfere with embryonic development of fish nilem. The stressor temperatures for the embryonic development of hard-lipped barb were 25oC and 31oC, while the salinity stressor for hard-lipped barb embryos was above 5 ppt. The results of this study could be used as reference in fish farming activities of hard-lipped barb to optimize seedling production.Key Words:Â  Osteochilus hasselti, embryo development, environmental stressors, temperature, salinityÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Paparan terhadap stressor lingkungan pada ikan merupakan aspek yang menjadi perhatian bagi peneliti karena efeknya dapat merugikan metabolisme, pertumbuhan, ketahanan terhadap penyakit, kemampuan reproduksi, kesehatan, dan kelangsungan hidup ikan. Meskipun menurut para peneliti bahwa stress dapat berakibat buruk bagi ikan, namun fenomena stress ini masih perlu dipelajari lebih dalam lagi. Berdasarkan informasi tersebut, tulisan ini dibuat untuk mengkaji pengaruh stressor lingkungan terhadap ikan, khususnya pada spesies ikan nilem (Osteochilus hasselti) pada fase perkembangan embrio. Data yang dikumpulkan berasal dari hasil penelitian yang dilaksanakan di BPPBAT, Bogor. Jenis stressor lingkungan yang akan dibahas pada tulisan ini yaitu suhu dan salinitas. Derajat penetasan, mortalitas, dan tingkat kelangsungan hidup merupakan indikator penentu pengaruh stressor lingkungan terhadap perkembangan embrio. Selain itu, pengamatan perkembangan embrio melalui mikroskop juga dijadikan sebagai data pendukung. Berdasarkan data penelitian, dapat disimpulkan bahwa stressor lingkungan berupa suhu dan salinitas di luar batas toleransi dapat mengganggu perkembangan embrio ikan nilem. Suhu yang bersifat stressor bagi perkembangan embrio ikan nilem yaitu 25oC dan 31oC, sedangkan stressor salinitas bagi embrio ikan nilem yaitu di atas 5 ppt. Hasil dari studi ini dapat dijadikan sebagai acuan dalam kegiatan budidaya ikan nilem untuk mengoptimalkan produksi benih.Kata Kunci: Osteochilus hasselti, Perkembangan embrio, stressor lingkungan, suhu, salinitas</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/99</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.99</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 49-59</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/99/97</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Vitas Atmadi Prakoso, Kurniawan Kurniawan</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/100</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">PENGARUH BAHAN DAN KADAR PENGISI DALAM PEREKAT EKSTERIOR TERHADAP KETEGUHAN REKAT KAYU LAPIS</dc:title>
	<dc:creator>Iskandar, M. I.</dc:creator>
	<dc:description xml:lang="en-US">Effect of Materials and Filler Content in Exterior Adhesion for the Bonding Strength of PlywoodÂ Â Â Â Â Â Â Â Â  Constraints that faced by the plywood industry today is the high cost of manufacture of plywood which are mainly due to the high cost of the adhesive, to lower the cost of the adhesive can be done by adding fillers (filler) into the glue mixture. The material is expected to assist in the process of adhesion, especially to reduce the excessive penetration of the adhesive into venir. The purpose of this study was to determine the effect of the material and content of filler in the bonding strength of the adhesive of plywood. Venir used in this study was peeled veneer measuring 40 cm x 40 cm with a thickness of 1.5 mm. Plywood was made of three layers with a thickness of 4.5 mm. Type of adhesive used was liquid Phenol Formaldehyde (FF) with labor heavy of 170 g/m2 for each surface (one line labor), venir formed felted cool for 10 minutes with a pressure of 10 kg/cm2 followed by heat press at temperatures 140â° C , in the pressure of 10 kg/cm2 for 5 minutes. Testing the bonding strength of plywood with the Indonesian National Standard. This research was conducted using the nested experimental design 3 x 5 with four replications. Factor A (filler) the level of three kinds, namely three kinds of flour. Factor B (filler content) were level five kinds, namely 0%, 10%, 20%, 30% and 40%. The results showed that the factor A (filler) was not significantly different, while factor B (grade fillers) was very significant effect on the bonding strength of plywood.Key words: material, content, fillers, exterior, bonding strengthÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Kendala yang dihadapi oleh industri kayu lapis dewasa ini adalah tingginya biaya pembuatan kayu lapis yang pada umumnya disebabkan oleh tingginya biaya perekat, untuk menurunkan biaya perekat tersebut dapat dilakukan dengan cara menambahkan bahan pengisi (filler) ke dalam campuran perekat. Bahan tersebut diharapkan dapat membantu dalam proses perekatan, terutama untuk mengurangi penetrasi yang berlebihan dari perekat ke dalam venir. Tujuan penelitian ini adalah untuk mengetahui pengaruh bahan dan kadar pengisi dalam perekat eksterior terhadap keteguhan rekat kayu lapis. Venir yang digunakan dalam penelitian ini adalah venir kupas berukuran 40 cm x 40 cm dengan ketebalan 1,5 mm. Kayu lapis yang dibuat yaitu tiga lapis dengan ketebalan 4,5 mm. Jenis perekat yang digunakan adalah Fenol Formaldehida (FF) cair dengan berat labor 170 g/m2 untuk setiap permukaan (satu garis labor), venir yang dibentuk dikempa dingin selama 10 menit dengan tekanan 10 kg/cm2 kemudian dilanjutkan dengan kempa panas pada suhu 140â° C, tekanan kempa sebesar 10 kg/cm2 selama 5 menit. Pengujian keteguhan rekat kayu lapis dengan Standar Nasional Indonesia. Penelitian ini dilakukan dengan menggunakan rancangan percobaan tersarang (nested) 3 x 5 dengan empat kali ulangan. Faktor A (pengisi) yang bertaraf tiga macam yaitu tiga macam tepung. Faktor B (kadar pengisi) yang bertaraf lima macam, yaitu 0%, 10%, 20%, 30% dan 40%. Hasil penelitian menunjukkan bahwa faktor A (bahan pengisi) tidak berbeda nyata, sedangkan faktor B (kadar bahan pengisi) berpengaruh sangat nyata terhadap keteguhan rekat kayu lapis.Kata kunci:Â  bahan, kadar, pengisi, eksterior, keteguhan rekat</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/100</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.100</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 60-65</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/100/98</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 M. I. Iskandar</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/101</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">TOKSISISITAS INSEKTISIDA PROFENOFOS DAN KLORPIRIFOS TERHADAP IKAN NILA (Oreochromis sp.)</dc:title>
	<dc:creator>Sutamihardja, RTM.</dc:creator>
	<dc:creator>Maulana, Irfan</dc:creator>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:description xml:lang="en-US">Insecticide toxicity of profenofos and chlorpyrifos on nile tilapia (Oreochromis sp.)Â Â Â Â Â Â Â Â  The purpose of this study was to determine the level of toxicity of two organophosphate pesticide chlorpyrifos and profenofos on the nile tilapia (Oreochromis. Sp). Applications for pest control of insect pests on plants may indirectly increase production, but some may find the negative impacts. Although a kind of pesticide intended to kill a specific target group or species, but is intrinsically toxic to all organisms for ecosystem sustainability. Profenofos and chlorpyrifos is a broad-spectrum organophosphate insecticide used to control insect pests on pepper, cotton, corn, onions, potatoes, vegetables and other crops. A number of the available data indicate that profenofos and chlorpyrifos are also harmful to non-target organisms in terrestrial and aquatic ecosystems. Scope o the study include Aclimitation Test, Preliminary and Definitive Determination and Test Range. The results showed the value of LC 50 was getting smaller with increasing observation time in both types of insecticides, results for profenofos LC50-24 hours 0.866 mg / L, LC50-48 hours 0.786 mg / L, LC50-72 hours 0,711 mg / L and 0,517 hours LC50-96 mg / L and for chlorpyrifos was LC50-24 hour 0.227 mg / L, LC50-48 hours of 0,211 mg / L, LC50-72 hours 0.192 mg / L and LC50-96 hours 0.173 mg / L, these results indicated that the insecticide profenofos and chlorpyrifos were insecticides with extremely high toxicity. LC50 values of insecticide chlorpyrifos was 3.6 times lower than the toxicity of Â profenofos.Keywords: profenofos, chlorpyrifos, LC50, Oreochromis.spÂ ABSTRAKÂ Â Â Â Â Â Â Â Â  Tujuan dari penelitian ini adalah untuk mengetahuiÂ  tingkat toksisitas dari dua pestisida organofosfat yaitu profenofos dan Klorpirifos terhadap ikan nila ( Oreochromis. sp ). Aplikasi untuk penanggulangan hama serangga pengganggu pada tanaman secara tidak langsung dapat meningkatkan produksi, namun tidak sedikit pula ditemukan dampak negatifnya. Meskipun suatu jenis pestisida ditujukan untuk mematikan suatu kelompok atau spesies target tertentu, tetapi pada hakekatnya bersifat racun terhadap semua organisme untuk keberlanjutan ekosistem. Profenofos dan Klorpirifos merupakan insektisida organofosfatÂ  berspektrum luas yang digunakan untuk mengendalikan hama serangga pada cabai, kapas, jagung, bawang, kentang, sayur-sayuran dan tanaman lainnya. Sejumlah data yang tersedia menunjukkan bahwa profenofos dan klorpirifos juga berbahaya untuk organisme non-target pada ekosistem terestrial dan perairan.Ruang lipngkup penelitian ini meliputi Aklimitisasi, Uji Pendahuluan dan Penentuan Kisaran dan Uji Definitif. Hasil penelitian menunjukan nilai LC 50 semakin kecil dengan bertambahnya waktu pengamatan pada kedua jenis insektisida, hasil LC50-24 jam 0,866 mg/L, LC50-48 jam 0,786 mg/L, LC50-72 jam 0,711 mg/L dan LC50-96 jam 0,517 mg/L dan untuk klorpirifos didapatka hasil LC50-24 jam 0,227 mg/L, LC50-48 jam 0,211 mg/L, LC50-72 jam 0,192 mg/L dan LC50-96 jam 0,173 mg/L,Â  hasil ini menunjukan bahwa insektisida profenofos dan klorpirifos adalah jenis insektisida dengan daya racun yang sangat tinggi. Nilai LC50 insektisida klorpirifos rata-rata pada tiap waktu pajanan 3,6 kali lebih rendah dibandingkan dengan profenofos sehingga daya racun klorpirifos lebih kuat dibandingkan dengan profenofos.Kata kunci : Profenofos, Klorpirifos, LC 50, Oreochromis.sp</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/101</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.101</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 66-77</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/101/99</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 RTM. Sutamihardja, Irfan Maulana, Mamay Maslahat</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/102</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/
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	<dc:title xml:lang="en-US">PENGARUH PENAMBAHAN AMPELA AYAM PADA KOMPOSISI PAKAN TERHADAP PERFORMA REPRODUKSI INDUK IKAN LELE</dc:title>
	<dc:creator>Ath-thar, M. H. Fariduddin</dc:creator>
	<dc:creator>Prakoso, Vitas Atmadi</dc:creator>
	<dc:description xml:lang="en-US">The effect of adding chicken gizzard in the composition of the feed on the reproductive performance of the catfish spawnersÂ Â Â Â Â Â Â Â  Currently catfish farming is one of the people's choice, because it is triggered by a number of catfish demand. But in farming activities carried out by people sometimes do not pay attention to the quality aspects of the parent catfish. Parent quality also depends on the quality of the feed given. Therefore, it is needed feed with good quality in order to produce a good quality catfish broadstock. The purpose of this study was to determine the optimum dose of chicken gizzard in feed to the reproductive performance of the catfish spawners. Feed given during gonadal maturation of spawners was floating feed of commercial brands of Hi-Pro-Vite 781 with a protein content of 30% -33% combined with boiled chicken gizzard. The treatment combination of feed used is: 1. Control (Pellet), 2. 25% pellets, 75% gizzard, 3. 50% pellets, 50% gizzard, and 4. 75% pellets, 25% gizzard. Parameters measured were fecundity, length of rematurasi, hatching and larval survival degree. The results showed that the combination of feed pellets ampela 50% to 50% is the right combination for catfish spawners could increase fecundit, hatching and larval survival degree. While the combination of feed pellets ampela 75% to 25% is the right combination to increase length of rematuration of catfish spawners.Key words: chicken gizzar, catfish spawners, pelletÂ ABSTRAKÂ Â Â Â Â Â Â Â  Saat ini budidaya ikan lele merupakan salah satu pilihan masyarakat, karena dipicu oleh banyaknya permintaan ikan lele. Namun dalam kegiatan budidaya yang dilakukan oleh masyarakat terkadang tidak memperhatikan aspek kualitas induk ikan lele tersebut. Kualitas induk ini juga tergantung dari kualitas pakan yang diberikan. Oleh karena itu, diperlukan pakan dengan kualitas yang baik agar menghasilkan induk lele yang berkualitas baik. Tujuan dari penelitian ini adalah untuk mengetahui dosis optimum komposisi penambahan ampela ayam dalam pakan terhadap performa reproduksi induk ikan lele. Pakan yang diberikan selama pematangan gonad induk ikan lele adalah pakan apung komersil merk Hi-Pro-Vite 781 dengan kandungan protein 30%-33% yang dikombinasikan dengan ampela ayam yang direbus. Perlakuan kombinasi pakan yang digunakan adalah: 1. Kontrol (Pellet), 2. 25% pellet, 75% ampela, 3. 50% pellet, 50% ampela, dan 4. 75% pellet, 25% ampela. Parameter yang diamati adalah fekunditas, lama rematurasi, derajat penetasan, dan derajat kelangsungan hidup larva. Hasil yang diperoleh memperlihatkan bahwa pakan kombinasi ampela 50 % dengan pellet 50 % merupakan kombinasi yang tepat untuk dapat meningkatkan fekunditas induk lele serta derajat penetasan dan derajat kelangsungan hidup larva yang dihasilkannya. Sedangkan pakan kombinasi ampela 75 % dengan pellet 25 % merupakan kombinasi yang tepat untuk meningkatkan rematurasi induk lele.Kata Kunci: ampela ayam, induk ikan lele, pellet</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/102</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.102</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 78-82</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/102/100</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 M. H. Fariduddin Ath-thar, Vitas Atmadi Prakoso</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/103</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">HIDROLISIS ASAM KLORIDA TEPUNG PATI SINGKONG (Manihot esculenta Crantz) DALAM PEMBUATAN GULA CAIR</dc:title>
	<dc:creator>Sutamihardja, RTM.</dc:creator>
	<dc:creator>Srikandi, Srikandi</dc:creator>
	<dc:creator>Herdiani, Dian Purnamasari</dc:creator>
	<dc:description xml:lang="en-US">Chloride Acid Hydrolysis of Cassava (Manihot esculenta Crantz) Strach Flour in Producing a Liquid SugarÂ Â Â Â Â Â Â Â  Cassava (Manihot esculenta Crantz), known as cassava or manioc is a tuber or root of a tree that long with a diameter average of 5-10 cm and a length of 50-80 cm, depending on the type of cassava. Cassava is agricultural products that having high potency source of carbohydrates for food and industrial materials. Cassava starch can be made for liquid sugar by the method of acid hydrolysis using hydrochloric acid. The research results showed that Â rendemen at a HCl concentration of 0.75 N and hydrolysis time of 90 minutes was 80.51%. The higest rendemen of liquid sugar at a concentration of 0.5 N HCl and the hydrolysis time of 90 minutes was 84.22%. Results of the analysis indicate liquid sugar content of 16.22% moisture, ash content of 1.46%, 2.16% protein content, fat content of 0.53%, carbohydrates of 63.90%, and a negative starch content.Key words: Cassava,Â  Flour Cassava Starch, AcidÂ  Hydrolysis, Liquid SugarÂ ABSTRAKÂ Â Â Â Â Â Â Â  Singkong (Manihot esculenta Crantz) yang dikenal sebagai ketela pohon atau ubi kayu merupakan umbi atau akar pohon yang rata-rata berdiameter 5-10 cm dan panjang 50-80 cm, tergantung dari jenis singkong. Singkong merupakan hasil produk pertanian yang potensinya tinggi sebagai sumber karbohidrat untuk bahan pangan dan industri. Pati singkong dapat dibuat gula cair dengan metode hidrolisis asam menggunakan asam klorida. Hasil penelitian menunjukkan bahwa nilai rendemen tertinggi pada konsentrasi HCl 0,75 N dan waktu hidrolisis 90 menit yaitu sebesar 80,51%.Â  Rendemen tertinggi kadar gula pereduksi dari pembuatan gula cair dengan konsentrasi HCl 0,5 N dan waktu hidrolisis 90 menit sebesar 84,22%. Hasil analisa gula cair menunjukkan kandungan kadar air 16,22%, kadar abu 1,46%, kadar protein 2,16%, kadar lemak 0,53% , karbohidrat 63,90%, dan kandungan pati negatif.Kata kunci: Singkong, Tepung Pati Singkong, Hidrolisis Asam, Gula Cair</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/103</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.103</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 83-91</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/103/101</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 RTM. Sutamihardja, Srikandi Srikandi, Dian Purnamasari Herdiani</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
</oai_dc:dc>
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			<header>
				<identifier>oai:ojs.ejournalunb.ac.id:article/104</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
			</header>
			<metadata>
<oai_dc:dc
	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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	<dc:title xml:lang="en-US">PEMANFAATAN LIMBAH CANGKANG TELUR SEBAGAI BIOSORBEN UNTUK ADSORPSI  LOGAM Pb Dan Cd</dc:title>
	<dc:creator>Maslahat, Mamay</dc:creator>
	<dc:creator>Taufik, Agus</dc:creator>
	<dc:creator>Subagja, Prima Wahyu</dc:creator>
	<dc:description xml:lang="en-US">Waste Utilization of Eggs Shell as an Adsorbent for Adsorption of Metal, Pb and CdÂ Â Â Â Â Â Â  Egg shell waste is one of waste that not be fully utilized. Eggshell can be used as a biosorbent substance because its contain a high CaCO3 and has a natural pore structure. Eggshell waste biosorbent potentially used as an alternative to adsorp heavy metal waste that pollute much in the environment. The purpose of the study was to use the waste to become biosorbent and to investigate its potential in adsorption Pb and Cd. Research methodology were producing biosorbent and getting optimum-sorption condition. They were contact time, biosorbent weights, and the concentration ofÂ  Pb and Cd. Measurement of the concentration of Pb and Cd before and after sorption processes using instrument of Atomic Absorption Spectrophotometer (AAS) Agilent 240FS type AA. The results showed that eggshell biosorbent could adsorb heavy metals of Pb 65.99% in concentration of adsorbent of 160 ppm, contact time was 20 minutes, and biosorbent weights of 0.50 g. Adsorption of Cd was 93.16% in concentration of adsorbent was 20 ppm, contact Â time Â 40 minutes, and biosorbent weights 0.25 g.Key words: eggshell biosorbent ,Â  Pb, Cd, Atomic Absorbtion SpectrophotometerÂ ABSTRAKÂ Â Â Â Â Â Â Â  Limbah cangkang telur termasuk salah satu limbah yang belum dimanfaatkan secara maksimal. Cangkang telur dapat dimanfaatkan sebagai zat penjerap yang baik karena mengandung CaCO3 yang tinggi dan memiliki struktur pori-pori alami. Limbah cangkang telur berpotensi digunakan sebagai biosorben alternatif untuk mengadsorpsi limbah logam berat yang banyak mencemari lingkungan yaitu logam berat Pb dan Cd. Tujuan penelitian ini adalah memanfaatkan limbah cangkang telur untuk dijadikan biosorben dan meneliti potensinya dalam adsorpsi logam Pb dan Cd. Tahapan penelitian terdiri atas preparasi dan pembuatan biosorben cangkang telur, dan Â optimasi adsorpsi biosorben cangkang telur terhadap logam berat Pb dan Cd. Optimasi adsorpsi meliputi variabel waktu kontak optimum, bobot biosorben optimum,Â  dan konsentrasi adsorbat optimum. Pengukuran konsentrasi logam berat Pb dan Cd sebelum dan setelah proses adsorpsi menggunakan instrumen Atomic Absorption Spectrophotometer (AAS) Agilent tipe 240FS AA. Hasil penelitian menunjukan bahwa biosorben cangkang telur dapat mengadsorpsi logam berat Pb sebesar 65,99% pada kondisi konsentrasi adsorbat 160 ppm, waktu kontak 20 menit, dan berat biosorban sebesar 0,50 gram. Sedangkan untuk logam berat Â Cd, persen adsorpsi sebesar 93,16% pada konsentrasi sorbat 20 ppm, waktu kontak 40 menit, dan berat biosorben sebesar 0,25 gram.Kata Kunci: biosorben cangkang telur, Pb, Cd, Atomic Absorption spectrophotometer.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2017-12-03</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/104</dc:identifier>
	<dc:identifier>10.31938/jsn.v5i1.104</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 5 No. 1 (2015): Sains Natural; 92-100</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v5i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/104/102</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2017 Mamay Maslahat, Agus Taufik, Prima Wahyu Subagja</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/105</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
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	<dc:title xml:lang="en-US">RITME HARIAN KONSUMSI OKSIGEN INDUK IKAN MAS  Cyprinus carpio DENGAN FOTOPERIODE KONTINYU 24 JAM</dc:title>
	<dc:creator>Prakoso, Vitas Atmadi</dc:creator>
	<dc:creator>Ryu, Jun Hyung</dc:creator>
	<dc:creator>Chang, Young Jin</dc:creator>
	<dc:description xml:lang="en-US">DIEL RHYTHM OF OXYGEN CONSUMPTION ON ADULT COMMON CARP Cyprinus carpio WITH CONTINUOUS 24-HOURS PHOTOPERIODÂ  Â  Â  Â  Â Some external factors could affect the metabolism rate of fish. One of them is photoperiod which related to the length of day and night in a day. Based on that correlation, the experiment was conducted to determine the effects of photoperiod manipulation to the diel rhythm of oxygen consumption on adult common carp Cyprinus carpio. The experimental fish (total length: 29.2 Â± 0.4 cm, total weight: 1295.8 Â± 56.1 g) was observed in respirometer which connected in a closed recirculation system. The study was conducted with three replications with one individu in each replication. The water temperature and closed recirculation system was maintained at 20.2 Â± 0.3oC. The photoperiod was set to 24 hours light : 0 hours of dark by using fluorescent lamp which lit continuously. The results showed that during 24 hours observation at 24 hours light: 0 hours dark condition, adult common carp has an oxygen consumption range of 24.5 - 29.1 mg O2/kg/h at 20oC. The average value of the lowest oxygen consumption occurred at 02.00 and 17.00 (24.5 Â± 1.9 mg O2/kg/h). Meanwhile, the highest oxygen consumption value was recorded at 06.00 (29.1 Â± 1.7 mg O2/kg/h). Based on data of oxygen consumption obtained from this study, no significant difference found between oxygen consumption of adult common carp during day and night with photoperiod manipulation. The activity and metabolism of adult common carp have changed with the change of photoperiod.Keywords: Common carp, Cyprinus carpio, oxygen consumption, photoperiod.Â ABSTRAKÂ  Â  Â  Â  Â  Beberapa faktor eksternal dapat mempengaruhi laju metabolisme pada ikan. Salah satu diantaranya adalah fotoperiode yang berkaitan dengan lamanya siang dan malam dalam satu hari. Berdasarkan korelasi tersebut, maka dilakukan penelitian untuk mengetahui pengaruh manipulasi fotoperiode terhadap ritme harian konsumsi oksigen pada induk ikan mas Cyprinus carpio. Ikan uji (panjang total 29,2 Â± 0,4 cm; bobot total 1295,8 Â± 56,1 g) diamati di dalam respirometer yang terhubung dalam sistem resirkulasi tertutup. Penelitian dilakukan dengan tiga ulangan dengan masing-masing jumlah induk ikan sebanyak satu ekor. Suhu air dan sistem resirkulasi tertutup diatur pada suhu 20,2 Â± 0,3oC. Fotoperiode diatur pada kondisi 24 jam terang : 0 jam gelap dengan menggunakan lampu fluorescent yang dinyalakan secara kontinyu. Hasil penelitian menunjukkan bahwa selama pengamatan 24 jam kondisi 24 jam terang : 0 jam gelap, induk ikan mas memiliki kisaran konsumsi oksigen sebesar 24,5 - 29,1 mg O2/kg/jam di 20oC. Nilai rata-rata konsumsi oksigen terendah terjadi pada jam 02.00 dan 17.00, yaitu 24,5 Â± 1,9 mg O2/kg/jam. Sedangkan nilai konsumsi oksigen tertinggi tercatat pada jam 06.00, yaitu 29,1 Â± 1,7 mg O2/kg/jam. Berdasarkan data konsumsi oksigen yang diperoleh dari penelitian ini, tidak ditemukan adanya perbedaan nyata antara konsumsi oksigen induk ikan mas saat siang dan malam hari dengan adanya manipulasi fotoperiode. Aktivitas dan metabolisme induk ikan mas mengalami perubahan dengan adanya perubahan fotoperiode.Kata kunci: Ikan mas, Cyprinus carpio, konsumsi oksigen, fotoperiode.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2018-01-30</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/105</dc:identifier>
	<dc:identifier>10.31938/jsn.v8i1.105</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 8 No. 1 (2018): Sains Natural; 1-7</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v8i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/105/113</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2018 Vitas Atmadi Prakoso, Jun Hyung Ryu, Young Jin Chang</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/106</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
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	<dc:title xml:lang="en-US">ISOLASI DAN KARAKTERISASI KOLAGEN DARI KULIT IKAN PATIN (Pangasius sp.)</dc:title>
	<dc:creator>Suptijah, Pipih</dc:creator>
	<dc:creator>Indriani, Dini</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:description xml:lang="en-US">Isolation and Characterization of Collagen from the Skin of Catfish (Pangasius sp.)Â Â  Â  Â  Â  Â  Skin of catfish is one of aquatic by-products which could be used as an alternative source of collagen. This research is aimed to isolate and characterize collagen from skin of catfish. Methods of Â isolation of collagen included three stages, the first was deproteinization using NaOH solution with concentration of 0.05 M; 0.10 M; 0.15 M; 0.20 M for 12 hours, the second was soaking in CH3COOH solution with concentration of 0.05 M; 0.10 M; 0.15 M; and 0.20 M for 2 hours, and the third was extraction in water at a temperature of 40 0C for 2 hours; characterization of collagen was included chemical and physical properties. The results showed that the best extraction method ofcollagen from skin of catfish was soaking the skin in 0.05 M NaOH solution for 12 hours and soaking the skin in 0.05 M acetic acid for 2 hours. Extraction yields of collagen was 12.15%. Chemical characteristics included proximate and amino acid composition. Proximate value of collagen consisted of moisture was 6.55%, ash 1.80%,Â  protein 64.74% and fat 8.85%.Â  The major amino acid composition of collagen were glycine, proline, alanine, arginine and glutamate. Physical characteristics of collagen resulted from FTIR analysis showed amide A, amide B, amide I, amide II and amide III, triple helical structure of the amide I and amide III indicates that the compound produced was collagen; color analysis was 66.39%; thermal analysis showed a melting temperature peak was 154.47 0C and pH value was 5.34.Keywords : Catfish, isolation, characterization, collagen, skinÂ ABSTRAKÂ  Â  Â  Â  Â  Kulit ikan patin merupakan salah satu limbah hasil perairan yang dapat digunakan sebagai sumber alternatif kolagen. Penelitian ini bertujuan untuk mengisolasi dan karakterisasi kolagen yang diperoleh dari kulit ikan patin. Isolasi kolagen yang dilakukan meliputi tiga tahap, yaitu tahap pertama adalah proses deproteinisasi menggunakan larutan NaOH dengan konsentrasi, yaitu 0,05 M; 0,10 M; 0,15 M; 0,20 M dan lama waktu perendaman selama 12 jam; tahap kedua, yaitu perendaman dalam larutan CH3COOH dengan empat konsentrasi CH3COOH yaitu 0,05 M; 0,10 M; 0,15 M; dan 0,20 M dan lama waktu perendaman selama 2 jam; dan tahap ketiga, yaitu ekstraksi dengan air pada suhu 40 0C selama 2 jam; serta karakterisasi kolagen yang dilakukan, meliputi sifat kimia dan fisik. Hasil penelitian menunjukkan bahwa metode ekstraksi kolagen dari kulit ikan patinÂ  terbaik diperoleh melalui proses perendaman kulit dalam larutan NaOH 0,05 M selama 12 jam danÂ  perendaman kulit dalam asam asetat 0,05 M selama 2 jam.Â  Rendemen serbuk kolagen yang dihasilkan sebesar 12,15 %. Karakteristik kimia meliputi proksimat dan komposisi asam amino. Nilai proksimat kolagen terdiri dari kadar air 6,55 %,Â  abu 1,80 %, protein 64,74 % dan lemak 8,85 %. Komposisi asam amino yang dominan pada kolagen adalah glisina, prolina, alanina, arginina dan glutamat. Karakteristik fisik kolagen yang dihasilkan adalah analisis FTIR menunjukkan adanya gugus amida A, amida B, amida I, amida II dan amida III, struktur triple heliks pada amida I dan amida III mengindikasikan bahwa senyawa yang dihasilkan adalah kolagen; analisis warnaÂ  yaitu 66,39 %; analisis termal yang menunjukkan suhu puncak pelelehan adalah 154,47 0C dan nilai pH kolagen yaitu 5,34.Â Kata kunci : Ikan patin, isolasi, karakterisasi, kolagen, kulitÂ </dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2018-01-30</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/106</dc:identifier>
	<dc:identifier>10.31938/jsn.v8i1.106</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 8 No. 1 (2018): Sains Natural; 8-23</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v8i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/106/114</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2018 Pipih Suptijah, Dini Indriani, Supriyono Eko Wardoyo</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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				<identifier>oai:ojs.ejournalunb.ac.id:article/107</identifier>
				<datestamp>2023-11-29T01:27:04Z</datestamp>
				<setSpec>JSN:ART</setSpec>
				<setSpec>driver</setSpec>
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	xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/"
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	<dc:title xml:lang="en-US">PARAMETER FISIKA DAN KIMIA AIR KOLAM IKAN NILA HITAM (Oreochromis niloticus)</dc:title>
	<dc:creator>Pramleonita, Meilinda</dc:creator>
	<dc:creator>Yuliani, Nia</dc:creator>
	<dc:creator>Arizal, Ridha</dc:creator>
	<dc:creator>Wardoyo, Supriyono Eko</dc:creator>
	<dc:description xml:lang="en-US">Physical and Chemical Parameters of Water Fish Pond Black Nile Tilapia (Oreochromis niloticus) Water is a natural resource that is essential for the survival of humans and other creatures, role of water is essential for life on earth, especially fish in the water habitat. Fish need a comfortable environment in order to be healthy and growing optimally. Therefore, the water, used as a habitat of life for the fish, have certain requirements. So the quality of the water must be very noted. Tilapia is a freshwater fish that has a great tolerance towards the environment, therefore it is highly appreciated by fish farmers in Indonesia.Â  Study of physical and chemical parameters in water ofÂ  tilapia fish pond was done due to lack of review of water quality of tilapia fish pond. The review is based on a sampling of water, i.e. morning and afternoon. A review of the pond water quality was expected to assist fish farmers got information about the qualities of water of tilapia fish pond in physical and chemical characteristics.Â  The method of this research was Grab (momentarily) methods in water sampling. Testing of water samples in physics done visually for color parameters, temperature using a thermometer device, and brightness parameters was using the secchi disk. In testing the chemical parameters were measurement of pH was using a pH meter Winkler method was done Â for the parameters of dissolved oxygen (DO). Titrimetric method was done Â for the parameters of Â total hardness, andÂ  carbon dioxide, whereas for ammonia parameter was done Â by spectrophotometric method were measured using UV-Vissible. After testing all the parameters then interpretation was done for the parameter data.Â  The results showed the water quality of tilapia fish pond in the area Laladon â€“ Bogor was not Â yet qualified for a good fish pond water based on ISO 7550: 2009 Product ion of tilapia growing Â level in calm water pond, Â for parameter Ammonia levels should be &amp;lt;0.02 mg / L, and based on PPNo.8, on water Quality Standard by 2001. The difference in the parameter levels in the morning and during the day due to the process of respiration at night by the aquatic organisms that produce CO2 gas and the process of photosynthesis during the day by plankton, microalgae, and other aquatic plants to produce a compound O2. The existence of other human activities during the day also affects the difference in the data levels in the morning and day time.Keywords: Tilapia, pond water qualityABSTRAKÂ Air merupakan sumber daya alam yang sangat penting bagi kelangsungan hidup manusia dan makhluk lainnya, Peranan air sangat penting bagi makhluk hidup di bumi terutama ikan yang berhabitat di dalam air. Ikan membutuhkan lingkungan yang nyaman agar dapat hidup sehat dan tumbuh secara optimal. Oleh karena ituÂ  air yang digunakan sebagai sumber kehidupan bagi ikan, memiliki persyaratan tertentu. Sehingga kualitas dari air harus sangat di perhatikan. Ikan nila merupakan ikan air tawar yang memiliki nilai toleransi yang besar terhadap lingkungannya sehingga sangat diminati oleh petani ikan di Indonesia. Studi parameter fisika dan kimia pada air kolam ikan nila dilakukan karena kurangnya peninjauan terhadap kualitas air kolam ikan nila. Peninjauan tersebut dilakukan berdasarkan waktu pengambilan sampel air, yaitu pada pagi dan siang hari. Peninjauan kualitas air kolam diharapkan dapat membantu para petani ikan mendapatkan informasi mengenai kelayakan kolam ikan nila secara fisika dan kimia.Â  Metode yang dilakukan penelitian ini adalah metode Grab (sesaat) untuk pengambilan sampel air. Pengujian sampel air secara fisika dilakukan secara visual untuk parameter warna, suhu dengan menggunakan alat pengukur suhu, dan metode secchi disk untuk parameter kecerahan. Pada pengujian parameter kimia dilakukan pengukuran pH dengan alat pengukur pH. Metode Winkler dilakukan untuk parameter dissolved oxygen (DO). Metode titrimetrik dilakukan untuk parameter s kesadahan total, dan karbondioksida, sedangkan untuk parameter ammonia dilakukan dengan metode spektrofotometri yang diukur dengan menggunakan alat spektrofotometer UV-Vissible. Setelah dilakukan pengujian semua parameter maka dilakukan interpretasi data hasil penelitian.Â  Hasil penelitian menunjukan kualitas air kolam ikan nila di daerah Laladon â€“ Bogor belum memenuhi syarat untuk air kolam ikan yang baik berdasarkan SNI 7550:2009 Produksi ikan nila tingkat Â pembesaran di kolam air tenang, untuk parameter Ammonia dengan kadar &amp;lt;0,02 mg/L, danÂ  berdasarkan Baku Mutu PPNo.82 tahun 2001. Terjadinya perbedaan kadar pada pagi dan siang hari dikarenakan terjadinya proses respirasi pada malam hari oleh organisme air sehingga menghasilkan senyawa CO2 dan terjadinya proses fotosintesis pada siang hari oleh plankton, mikroalga, dan tanaman air lainnya sehingga menghasilkan senyawa O2. Adanya aktifitas lain pada siang hari juga mempengaruhi terjadinya perbedaan kadar pada pagi dan siang hari.Kata kunci : Ikan nila, Kualitas air kolam</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Nusa Bangsa</dc:publisher>
	<dc:date>2018-01-30</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Original Research</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://ejournalunb.ac.id/JSN/article/view/107</dc:identifier>
	<dc:identifier>10.31938/jsn.v8i1.107</dc:identifier>
	<dc:source xml:lang="en-US">Sains Natural: Journal of Biology and Chemistry; Vol. 8 No. 1 (2018): Sains Natural; 24-34</dc:source>
	<dc:source>2621-508X</dc:source>
	<dc:source>2086-3446</dc:source>
	<dc:source>10.31938/jsn.v8i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://ejournalunb.ac.id/JSN/article/view/107/115</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2018 Meilinda Pramleonita, Nia Yuliani, Ridha Arizal, Supriyono Eko Wardoyo</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-sa/4.0</dc:rights>
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