顺磁共振法测定牛蒡纯化多糖的DPPH·自由基清除率  

Clearance Effects of Purified Burdock Polysaccharides on DPPH· Free Radical by ESR

作　　者：胡建[1,2] 李哲进[1] 孔凡伟[1] 顾林[1] 

机构地区：[1]扬州大学食品科学与工程学院,江苏扬州225127 [2]江苏省淮安市产品质量监督检验所,江苏淮安223001

出　　处：《安徽农业科学》2012年第21期10821-10825,共5页Journal of Anhui Agricultural Sciences

摘　　要：[目的]测定牛蒡纯化多糖的DPPH·自由基清除率。[方法]应用电子顺磁共振(ESR)方法测定牛蒡纯化多糖对DPPH·自由基的清除效果。[结果]当牛蒡纯化多糖与DPPH·自由基的质量比达到10.0时,5 min后就检测不出DPPH·自由基;牛蒡多糖与DPPH.自由基质量比为4.67时,可以清除50%的DPPH·自由基。[结论]牛蒡纯化多糖对DPPH·自由基具有一定的清除作用。[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（ESR）.[Result] When the mass ratio of purified Burdock polysaccharides to DPPH· free radical reached 10.0,DPPH· free radical could not be detected after 5 min;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.

关 键 词：电子顺磁共振 牛蒡纯化多糖 DPPH·自由基清除率 

分 类 号：S188[农业科学—农业基础科学]