The Optimization of Encapsulation Mangosteen (Garcinia mangostana L.)-Gotu Kola (Centella asiatica L. Urban) Fraction Combination in Soybean Liposome by Response Surface Methodology: http://www.doi.org/10.26538/tjnpr/v7i9.15. Trop J Nat Prod Res. 2023;7(9):3944-3950. Accessed January 10, 2026. https://tjnpr.org/index.php/home/article/view/2615