Rahmadani, F., Harimu, L., & Rahmanpiu. (2026). Quality Analysis of Virgin Coconut Oil Resulting From a Combination of Fermentation and Controlled Heating Using Silica by Rice Husk Ash. Hydrogen: Jurnal Kependidikan Kimia, 14(2). https://doi.org/10.33394/hjkk.v14i2.20244