SETYANINGRUM, L. .; PURWANTI, A. .; JANNAH, R. .; DIANA, N. N. .; WARDANI, A. K. .; ARMANDARI, I. . Total Alkaloid Determination in Ethanolic Extract of Cocoa (T. cacao) and Robusta Coffee (C. canephora) Beans using TLC-Densitometric Method. Indonesian Journal of Chemical Analysis (IJCA), [S. l.], v. 9, n. 1, p. 1–12, 2026. DOI: 10.20885/ijca.vol9.iss1.art1. Disponível em: https://journal.uii.ac.id/IJCA/article/view/40651. Acesso em: 31 mar. 2026.