Sutrisno S, Yulianto ME, Ariwibowo D, Paramita V, Utari FD, Azhara B, et al. Optimization of Coffee Bean Extraction Using Subcritical Water: A Response Surface Methodology Approach for Maximizing Caffeine and Antioxidant Yield. IFSTJ [Internet]. 2025 Dec. 15 [cited 2026 Apr. 22];9(1):19-27. Available from: https://www.online-journal.unja.ac.id/ifstj/article/view/43017