Antioxidant activity of mulberry polysaccharide

Polysaccharide was extracted from mulberry with the method of hot water extraction in this study.Antioxidant activity of mulberry polysac-charide was evaluated by the efficiency of scavenging the hydroxyl radical and superoxide anion radical.The results showed that mulberry polysac-charide had a certain capacity to scavenge hydroxyl radical and superoxide anion radical,and the efficiency of scavenging was increased with the concentrations.When the mulberry polysaccharide concentration achieved 0.7 mg/ml,the scavenging percentage of hydroxyl radical and superoxide anion radical reached 48.9% and 26.1%,respectively.Mulberry polysaccharide was believed to clear radicals and was able to terminate radical chain reaction.Therefore,the mulberry had a good role in anti-oxidation and anti-aging and had a great potential for development of anti-oxidation and an-ti-aging food.