甘肃临泽小枣多糖提取及抗氧化性  

Extraction and Antioxidant Activity of Polysaccharide from Gansu Linze Jujube

作　　者：吴冬青[1] 安红钢[1] 徐新建[1] 林敏[1] 潘红红[1] 

机构地区：[1]河西学院化学系

出　　处：《光谱实验室》2011年第3期1066-1070,共5页Chinese Journal of Spectroscopy Laboratory

基　　金：甘肃省教育厅科研资助项目(0509-02);西部资源环境化学重点实验室科研资助项目(xz0603)

摘　　要：研究了甘肃临泽小枣的抗氧化活性。采用邻二氮菲-F e2+-H2O2氧化法、邻苯三酚自氧化法以及卵黄脂蛋白不饱和脂肪酸过氧化体系对小枣多糖抗氧化作用进行了测定。临泽小枣多糖对羟自由基、超氧阴离子自由基均有清除能力,并能抑制卵黄脂蛋白脂质过氧化作用,在相同浓度下,多糖提取液对羟自由基清除能力最强、抑制卵黄脂蛋白脂质过氧化作用最弱。小枣多糖具有抗氧化活性,在一定浓度范围内抗氧化活性与多糖含量呈正相关。The antioxidative activity of Linze jujube was studied.The method of phenanthroline-Fe2＋-H2O2 reaction system and autoxidation reaction system of pyrogallol and the system of lipid peroxide were used to measure the antioxidation of the Linze jujube.The polysaccharide of jujube had scavenging action on hydroxyl radical and superoxide anion,and restraining action on lipid peroxidation of lecithin lipoprotein.In the same concentration,the polysaccharide of jujube had more strong scavenging effect on hydroxyl radical,moreover the restraining action as the most weak on lipid peroxidation of lecithin lipoprotein.The antioxidative activity was positive correlation to extract concentration within given concentration.

关 键 词：枣多糖 提取 抗氧化性 

分 类 号：O657.32[理学—分析化学]