Perangin-Angin, E. B., Sembiring , N. B., & Kaban , V. E. (2026). Test of Total Flavonoids and Antioxidant Activity of Active Fraction of Robusta Coffee Beans (Coffea canephora L.) for Diabetic Ulcers. Journal of Pharmaceutical and Sciences, 9(1), 624–634. https://doi.org/10.36490/journal-jps.com.v9i1.1342