Isolation and Identification of Saponin Compounds from the Butanol Extract of Majapahit Leaves (Crescentia cujete) Using Thin Layer Chromatography and Infrared Spectrophotometry. cb. 2018;1(1):1-6. Diakses April 16, 2026. https://ojs.unpatompo.ac.id/index.php/cb/article/view/558