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苦菜不同部位提取物的抗氧化活性
Authors
朱海芳
王天晓
+3 more
王建华
王玮
韩阳阳
Publication date
1 October 2010
Publisher
Abstract
分别用水、乙醇(体积分数分别为25%、50%、75%)和无水乙醇,对苦菜的根、茎、叶、花4个部位进行冷浸提取。测定不同处理条件下的提取率,并用DPPH自由基清除法检测提取物的抗氧化活性;测定提取物的总黄酮和总多酚类物质的含量及其EC50。结果表明:用50%乙醇提取的苦菜各部位提取率最高,不同部位不同溶剂提取物的抗氧化活性均呈明显的剂量关系;提取物的抗氧化活性与其中总黄酮和总多酚的含量有关;不同部位的抗氧化能力大小为:花>叶>茎>根
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Last time updated on 16/06/2016