Preparation, characterization, antioxidant activity and protective effect against cellular oxidative stress of phosphorylated polysaccharide from Cyclocarya paliurus

In this study, a phosphorylated derivative of Cyclocarya paliurus polysaccharide (CP) was synthesized using sodium tripolyphosphate and sodium trimetaphosphate. Antioxidant activities and cytoprotective effects of unmodified polysaccharide and phosphorylated derivatives were investigated employing various in vitro systems. Results showed that phosphorylated modification caused a significant change in chemical composition and the apparent...