Effect of polysaccharide of Salicornia herbacea on antioxidant and nitrite scavenging effects

This research is to study effect of polysaccharide obtained from S. herbacea on antioxidant and nitrite scavenging effect. Neutral sugar, uronic acid, and protein concentrations of polysaccharide were 52.68, 0.54, and 7.21%, respectively. Among neutral sugars, glucose and mannose were the major ones of the sugar moiety with molar ratio of 14.52 and 11.28, respectively. The maximum DPPH radical scavenging, hydroxyl radical scavenging, chelating, and hydrogen peroxide scavenging activities at 7 mg/mL were obtained, 69.04, 58.07, 60.21, and 62.54%, respectively. However, in the case of reducing power, it was OD 0.62 at 9.0mg/mL. The maximum nitrite scavenging activity was obtained, 76.77 % at 9 mg/mL and pH 1.5. These results indicate that the polysaccharide obtained from S. herbacea has good potential to be used as a source of materials or additives for oxidation suppressant in food, cosmetics and drug compositions.