CHEMICAL COMPOSITION ANALYSIS AND ANTIOXIDANT ACTIVITY OF SULFATED POLYSACCHARIDES EXTRACTED FROM BROWN ALGAE BY CHEMICAL AND ENZYME - ASSISTED METHODS

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.