Hatidja, M., Kepel, B. J., Budiarso, F. D., Manampiring, A. E., & Fatimawali, F. (2026). In Vitro Antioxidant Activity Test of Brown Algae (Sargassum polycystum) Ethanol Extract Using the DPPH Method. Jurnal Ilmiah Sains, 26(2), 176-188. https://doi.org/10.35799/jis.v26i2.65519