Abstract:
Sulfate polysaccharides from four Vietnamese brown algae Sargassum oligocystum, S. polycystum, S. seratum and Turbinaria ornata were extracted by both chemical and enzyme –assisted methods. The monosaccharide composition, sulfate content and molecular weight of all chemical and enzymatic extracts were analyzed. The effect of extraction method on chemical features of sulfated polysaccharides was investigated. The enzymatic extract showed higher antioxidant activity compared to chemical extract.