唐古特白刺提取物抗氧化作用的研究  

Research on antioxidation of Nitraria tangutorum Bobr.extract

作　　者：焦扬[1] 李彩霞[1] 胡丽杰[2] 李鹏[1] 张勇[1] 

机构地区：[1]河西学院生物系,甘肃张掖734000 [2]张掖医学高等专科学校,甘肃张掖734000

出　　处：《食品工业科技》2006年第5期54-55,共2页Science and Technology of Food Industry

基　　金：甘肃省中青年基金(3ZS041-A25-006)。

摘　　要：采用邻二氮菲-Fe2+氧化法、邻苯三酚自氧化法测定了唐古特白刺提取物的抗氧化作用。结果表明,不同溶剂的唐古特白刺提取物对羟基自由基(·OH)和超氧自由基(O-·2)均有一定的清除作用,在相同干物质浓度下,对羟自由基(·OH)的清除率依次递减的顺序为:80%乙醇、甲醇、丙酮、含盐酸0.1%的95%乙醇;对超氧阴离子自由基(O-·2)的清除率依次递减的顺序为:80%乙醇、甲醇、含盐酸0.1%的95%乙醇、丙酮。该结果提示唐古特白刺提取物具有抗氧化的作用。The method of phenanthroline--Fe^2＋reaction system and autoxidation reaction system of pyrogallol were used to investigate the antioxidation of the extraction from Nitraria tangutorum Bobr. The results showed that all the extracts from Nitraria tangutorum Bobr. obtained by different solvent had scavenging effects. The scavenging percentage of hydroxyl radical （·OH） was in the order of 80% ethanol〉 methanol〉acetone〉95% ethanol of the 0.1%HCI.The scavenging percentage of superoxide radical （O^-·2） was in the order of 80% ethanol 〉methanol 〉95% ethanol of the 0.1% HCI 〉acetone. It was demonstrated that the extracts from Nitraria tangutorum Bobr. had significant anti-oxidation capacity.

关 键 词：唐古特白刺 清除自由基 抗氧化作用 

分 类 号：TS255.1[轻工技术与工程—农产品加工及贮藏工程]