[1]
D. A. Fitria, A. S. Daulay, R. Ridwanto, and H. M. Nasution, “Determination of Catechin Content and Antioxidant Activity of Brewed and Ethanolic Extracts of Cacao Beans (Theobroma cacao L.) Using Uv-Vis Spectrophotometry”, JPS, vol. 9, no. 3, pp. 2349–2361, Jul. 2026.