Putri, M. K.; Dellima, B. R. E. M. Perbandingan Aktivitas Antioksidan, Inhibitor Enzim Tirosinase, Dan Antibakteri Serum Ekstrak Air, Ekstrak Etanol Kulit Buah Kopi Dan Kombinasinya: Comparison of Antioxidant Activity, Tyrosinase Enzyme Inhibitors, and Antibacterial Activity of Water Extract, Ethanol Extract of Coffee Fruit Peel and Their Combination. J. Sains Kes. 2025, 7, 338-346.