Scavenging Effects of Purified Burdock Polysaccharides on DPPH· Free Radical by EPR

[Objective] To detect the clearance rate of DPPH· free radical by purified Burdock polysaccharides. [Method] Scavenging effect of purified Burdock polysaccharide on DPPH· free radical were detected by Electron Paramagnetic Resonance (EPR). [Result] When the mass ratio of purified Burdock polysaccharides to DPPH· free radical reached 10.0, DPPH· free radical could not be detected after 5min; when the mass ratio was 4.67, a total of 50% DPPH· free radical could be removed. [Conclusion] Purified Burdock polysaccharide had certain scavenging effects on DPPH· free radical.