| 大麦麦叶中黄酮类化合物清除自由基动态研究 |
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| 引用本文： | 许钢,张虹.大麦麦叶中黄酮类化合物清除自由基动态研究[J].营养学报,2003,25(4):401-404. |
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| 作者姓名： | 许钢 张虹 |
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| 作者单位： | 杭州商学院食品科学与工程系,杭州310035 |
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| 摘 要： | 目的 : 研究 4种大麦麦叶中提取的黄酮类化合物对超氧阴离子自由基 (O2· )、羟自由基 (· OH)的清除作用。方法 : 用氮蓝四唑 (NBT)光还原法测定 O2·的清除率 ,氧化还原法测定· OH的清除率。结果 : 随着黄酮在反应液中浓度的增加 ,清除率呈上升趋势 ,当黄酮浓度达到 1 2μg/ ml左右时 ,对 O2·和· OH的清除率可分别高达 95.56%和 94.1 2 %。结论 :体外实验证实 ,大麦麦叶提取物具有较强的抗氧化作用
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| 关 键 词： | 大麦麦叶 黄酮类化合物 清除 自由基 O~(2·) ·OH |
| 文章编号： | 0512-7955(2003)-04-0401-04 |
| 修稿时间： | 2002年10月21 |
STUDY ON SCAVENGING FREE RADICALS BY ACTIVE COMPOUNDS FROM BARLEY LEAVES |
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| XU Gang,ZHANG Hong.STUDY ON SCAVENGING FREE RADICALS BY ACTIVE COMPOUNDS FROM BARLEY LEAVES[J].Acta Nutrimenta Sinica,2003,25(4):401-404. |
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| Authors: | XU Gang ZHANG Hong |
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| Abstract: | Objective: To study the scavenging capacity of extract from four kinds of barley leaves on superoxide free radical and hydroxyl free radical. Methods: Measure the content of superoxide free radical and hydroxyl free radical by nitro blue tetrazolium(NBT) photo-reduction. Results: Along with the flavonoid in the reaction liquid, the scavenging rate shows ascending trend . When the concentration of flavonoid is 12μg/ml, its scavenging rate is 95.56% and 94.12% on superoxide free radical and hydroxyl free radical respectively. Conclusion: The flavonoids of barley leave s have stronger anti-oxidative action. |
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| Keywords: | barley leaves flavonoid scavenge superoxide free radical hydroxyl free radical |
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