“Analysis of Total Alkaloid from Ethanol Extract of Butterfly Pea Flower Leaves (Clitoria Ternatea L.) Using UV-VIS Spectrophotometry Metodh”, Sinta. J. Sci. Tech. and Agric., vol. 7, no. 1, pp. 229–238, Jun. 2026, doi: 10.37638/sinta.7.1.229-238.