| 马齿苋提取物的生物活性研究 |
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| 引用本文： | 李水清,黄兵.马齿苋提取物的生物活性研究[J].安徽农业科学,2008,36(11):4573-4575. |
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| 作者姓名： | 李水清 黄兵 |
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| 作者单位： | 长江大学化学与环境工程学院,湖北荆州,434023 |
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| 摘 要： | 以乙醇、丙酮、乙酸乙酯、苯、石油醚为溶剂,利用温浸法从马齿苋(Portulaca oleracea L.)干粉中获得了提取物,测定了各溶剂提取物对菜粉蝶(Pieris rapae L.)5龄幼虫的触杀、拒食和胃毒活性。结果表明:各溶剂提取物均表现出一定的触杀活性,其中,以乙醇提取物的触杀活性最强,处理24 h后,乙醇提取物对菜粉蝶的触杀活性校正死亡率为55.13%;处理48 h后,校正死亡率为64.86%;而各溶剂提取物的拒食和胃毒活性微弱。
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| 关 键 词： | 马齿苋 菜粉蝶 触杀 拒食 胃毒 |
| 文章编号： | 0517-6611(2008)11-04573-01 |
| 修稿时间： | 2008年2月18日 |
Study on Biological Activity of the Extracts from Portulaca oleracea L. |
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| LI Shui-qing.Study on Biological Activity of the Extracts from Portulaca oleracea L.[J].Journal of Anhui Agricultural Sciences,2008,36(11):4573-4575. |
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| Authors: | LI Shui-qing |
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| Abstract: | Five species of solvents,namely ethanol,acetone,ethyl acetate,benzene and petroleum ether were selected to obtain extracts from Portulaca oleracea L.dry powder by warm immersion method.The contact toxicity,antifeeding toxicity and stomach toxicity of each extract against Pieris rapae L.were tested.The results showed that these extracts all had certain contact toxicity.Among them,ethanol extract had the strongest contact toxicity,and the adjusted death rates were 55.13% and 64.86% at 24 h and 48 h after treatment,respectively.Whereas the antifeeding activity and the stomach toxicity of each extract against P.rapae were weak. |
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| Keywords: | Portulaca oleracea L Pieris rapae L Contact toxicity Antifeeding toxicity Stomach toxicity |
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