H. Faisal, S. Handayani, M. Alvionita, and M. Sari, “Isolation of β-caroten from Brown Tiger Shrimp shell waste (Penaeus esculentus) and its antioxidant activity using ABTS (2,2-azinobis- [3-ethylbenzothiazoline-6-sulfonicacid] method”, J. Sains Nat., vol. 11, no. 2, pp. 48–55, Jul. 2021.