Antioxidative study of polysaccharides extracted from red (Kappaphycus alvarezii), green (Kappaphycus striatus) and brown (Padina gymnospora) marine macroalgae/seaweed

Abstract Sterile and fresh tissues of three marine macroalgae red, green brown ( Kappaphycus alvarezii, striatus Padina gymnospora ) collected from Malaysia east costal seas were compared for the antioxidants polysaccharide composition sugars as well active components. Results obtained showed that polysaccharides isolated can be used a source natural antioxidant compounds they possess potential in which 15.56 ± 0.12 mg/mL to best among all studied. The hot water extraction method is effective isolating studied seaweeds. GC–MS analysis revealed there presence chemical such furfural was 25.53% alvarezii 21.04% also incorporates n- Hexadecanoic acid about 26.31% seaweed contribute their activities. Further studies done on determining species are available abundantly with compounds.