Isolation and Identification of Saponin Compounds from the Butanol Extract of Majapahit Leaves (Crescentia cujete) Using Thin Layer Chromatography and Infrared Spectrophotometry. cb [Internet]. 2018 Jan. 30 [cited 2026 Apr. 16];1(1):1-6. Available from: https://ojs.unpatompo.ac.id/index.php/cb/article/view/558