Suriaini, N., Arpi, N., Syamsuddin, Y., & Supardan, M. (2025). Response Surface Methodology for Optimization of Free Fatty Acid Glycerolysis in Crude Palm Oil Using Crude Glycerol . Tropical Journal of Natural Product Research (TJNPR), 9(5), 2125-2130. https://doi.org/10.26538/tjnpr/v9i5.36