天然产物研究与开发2012，Vol.24Issue(7)：963-965,968,4.
杨桃提取物体外清除氧自由基作用
Scavenging Effects of Carambola Extracts on Oxygen Radical in Vitro
摘要
Abstract
Three kinds of extracts as homogenate,protein and polysaccharide were extracted from Carambola fruit. The scavenging activities of these extracts on oxygen free radical were determined by chemiluminometry. The results showed that the scavenging activities of the homogenate on hydroxy radical and hydrogen dioxide were similar,while the scavenging activity was low on superoxide anion radical. But referring to superoxide anion radical,its IC50 was about four times of above the others. The scavenging activities of the protein on superoxide anion radical and hydroxy radical were similar .while the scavenging activity was lower on hydrogen dioxide obviously. But referring to hydrogen dioxide,its IC50, was about nine times of above the others. The scavenging activity of the polysaccharide on hydroxy radical was the highest in the three kinds of oxygen free radicals. Its IC50, was about one twenty seconds of that on superoxide anion radical, and a-bout one sixty-fifths of that on hydrogen dioxide. Results also showed that Carambola extracts could scavenge superoxide anion radical, hydroxyl radical and hydrogen peroxide. And the scavenging activities of the different Carambola extracts varied on the different oxygen free radicals.
关键词
杨桃/氧自由基/超氧阴离子自由基/羟自由基/过氧化氢Key words
Carambola/oxygen free radical/superoxide anion radical/hydroxy radical/hydrogen dioxide分类
农业科技引用本文复制引用
肖湘,薛日海,张小芬..杨桃提取物体外清除氧自由基作用[J].天然产物研究与开发,2012,24(7):963-965,968,4.
