KA, R. T.; KUSUMAWATI, K. Proximate Analysis and Determination of Vitamin C Levels in Sungai Penuh Robusta Coffee Cascara (Coffea canephora) Using UV-Vis Spectrophotometric Method. Sainstech Farma: Jurnal Ilmu Kefarmasian, [S. l.], v. 17, n. 2, p. 65–69, 2024. DOI: 10.37277/sfj.v17i2.1940. Disponível em: https://journal.istn.ac.id/index.php/saintechfarma/article/view/1940. Acesso em: 17 sep. 2025.