文献类型：期刊文献

中文题名：胭脂红酸清除自由基的作用

英文题名：Free Radical Scavenging Capacity of Carminic Acid

作者：郭元亨[1] 马李一[1] 郑华[1] 张弘[1] 甘瑾[1] 李坤[1]

第一作者：郭元亨

机构：[1]中国林业科学研究院资源昆虫研究所,国家林业局资源昆虫培育与利用重点实验室

年份：2010

期号：17

起止页码：73-76

中文期刊名：食品科学

外文期刊名：Food Science

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：科技部成果转化项目(2007GB24320425);国家林业科技成果推广项目([2010]11)

语种：中文

中文关键词：胭脂红酸;抗坏血酸;自由基;清除活性

外文关键词：carminic acid; ascorbic acid; free radicals; scavenging activity

分类号：TS202.3;S899.3

摘要：以DPPH自由基、ABTS+·及O-2·3种自由基为实验对象,通过比较特定波长下自由基溶液吸光度的变化,评估胭脂红酸清除自由基的能力,并与抗坏血酸清除3种自由基的能力做比较。结果显示:胭脂红酸与抗坏血酸对3种自由基:DPPH自由基、ABTS+·及O-2·均具有清除活性;当胭脂红酸达到一定质量浓度时,对DPPH自由基、ABTS+·及O-2·的清除率分别可达83%、85%及46.84%左右。结果表明胭脂红酸是一种对自由基具有一定清除活性的食品添加剂。
In order to evaluate the ability of carminic acid to scavenge DPPH,ABTS＋ and superoxide anion radicals,the absorbance changes of the solutions of these three free radicals at certain characteristic wavelengths before and after addition of this acid were measured.Meanwhile,comparison among scavenging activities of carminic acid against these three free radicals was carried out.Carminic acid at certain concentrations could scavenge all of these free radicals and presented scavenging ratios of around 83%,85% and 46.84% against DPPH,ABTS＋ and superoxide anion radicals,respectively.This investigation reveals that carminic acid has certain free radical scavenging activity,thereby providing a food additive.