中国食品添加剂Issue(4)：118-121,4.
硒化皂荚仁多糖胶的制备及抗氧化性研究
Studies on preparation and antioxidant activity of selenide gleditsia polysaccharide gum
摘要
Abstract
Gleditsia polysaccharide gum was extracted by water, followed by ethanol precipitation. The water - soluble selenide gleditsia polysaccharide gum was prepared with sodium selenite. The structure of selenide gleditsia polysaccharide gum was linked by (3 - glycosidic and contains Se = 0 though UV and IR. The selenium mass fraction in selenide gleditsia polysaccharide gum was 38. 4mg/g by ICP. The selenide gleditsia polysaccharide gum had good thermal stability though DSC. The antioxidant activity was evaluated by two antioxidant assays including 1, 1 -diphenyl -2 -pieryl - hydrazyl ( DPPH) radical scavenging and hydrogen peroxide scavenging assay. The result showed selenide gleditsia polysaccharide gum had some effect on both. The antioxidant activity was linear with concentration. The scavenging rate was 46. 4% towards DPPH at the concentration of 3. 02mg. mL-1. The scavenging rate was 77. 7% when the hydrogen peroxide concentration was 2. 02mg μ mL-1.关键词
皂荚仁多糖胶/硒化反应/DPPH/羟自由基/羟自由基/抗氧化性Key words
gleditsia polysaccharide gum/ selenium reaction/ DPPH/ hydrogen peroxide/ antioxidant activity分类
化学化工引用本文复制引用
陈燕青,张晓露,李想..硒化皂荚仁多糖胶的制备及抗氧化性研究[J].中国食品添加剂,2012,(4):118-121,4.基金项目
上海市教委科研创新项目资助,项目编号:09YZ374.上海工程技术大学大学生科研创新项目资助,项目编号:A-2603-11-01J034. （）
