The Effect of Cloride Acid Concentration to The Phenolic Compound and The Antioxidant Activity in Methanol Extract of Sargassum oligocystum . JIS [Internet]. 2024 Apr. 29 [cited 2026 Sep. 16];24(1):80-6. Available from: https://ejournal.unsrat.ac.id/v3/index.php/JIS/article/view/53431