食品科学 ›› 2010, Vol. 31 ›› Issue (17): 73-76.doi: 10.7506/spkx1002-6630-201017017

• 基础研究 • 上一篇    下一篇

胭脂红酸体外清除自由基作用

郭元亨,马李一,郑 华,张 弘* ,甘 瑾,李 坤   

  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
  • 收稿日期:2010-06-13 修回日期:2010-07-27 出版日期:2010-09-15 发布日期:2010-12-29
  • 通讯作者: 张弘 E-mail:kmzhhong@163.com
  • 基金资助:

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

Free Radical Scavenging Capacity of Carminic Acid

GUO Yuan-heng,MA Li-yi,ZHENG Hua,ZHANG Hong*,GAN Jin,LI Kun   

  1. Key Laboratory of Cultivation and Utilization of Resource Insects, State Forestry Administration, Research Institute of Resource
    Insects, Chinese Academy of Forestry, Kunming 650224, China
  • Received:2010-06-13 Revised:2010-07-27 Online:2010-09-15 Published:2010-12-29
  • Contact: Zhang Hong E-mail:kmzhhong@163.com

摘要:

以DPPH 自由基、ABTS+·及O2 -·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O2 -·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O2 -·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。

关键词: 胭脂红酸, 抗坏血酸, 自由基, 清除活性

Abstract:

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.

Key words: carminic acid, ascorbic acid, free radicals, scavenging activity

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