Antioxidant Activity and α-Glucosidase Inhibitory Activity of Cyclocarya paliurus Polysaccharides from Different Regions

The antioxidant activity and hypoglycemic activity of Cyclocarya paliurus polysaccharides from different regions were preliminary evaluated taking the DPPH free radical scavenging capacity(DPPH·),hydroxyl radical(·OH),superoxide anion radical(O₂^-·)and alpha-glucosidase inhibitory activity as indexes. The results showed that,there were significant differences between the contents of Cyclocarya paliurus polysaccharides from different regions(p<0.05),in which Jiangxi Xiushui county was the highest 5.85%±0.02%,the Pingyang township in Rongjiang county of Guizhou was the lowest 3.50%±0.10%. The DPPH·,OH·,O₂^-·radical scavenging capacity and alpha-glucosidase inhibitory activities of polysaccharides from different habitats were different,and there was a certain dose effect relationship between the activity and the concentration of polysaccharides,that was,as the concentration of polysaccharide increased,the antioxidation and α-glucosidase inhibitory activity enhanced. The Cyclocarya paliurus polysaccharides had good antioxidant and hypoglycemic activity in vitro,which would be further exploited and utilized.