logical activities of Sargassum extract or purified compounds include anticancer, antibacterial, antifungal, antiinflammatory, anticoagulant, antioxidant, hypoglycemic, hypolipidemic, and hepatoprotective 3. Sargassum genus is widely spread in various water areas in Indonesia. Also, it has promising biomass potential because of the good growth in a tropical area. Since the chemical composition of seaweeds is strongly influenced by their environmental conditions 5 10 , the evaluation of different marine habitats on seaweed chemical content is important to be conducted. This is related to the bioprospecting strategy for seaweed industry development, especially for future functional ingredient sources. This