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Position: Home > Articles > Study on Insecticidal Activity of the Extract of Hibiscus trionum by Different Solvent to Plutella xylostella Hubei Agricultural Sciences 2008,47 (11) 1286-1287

野西瓜苗不同溶剂萃取物对小菜蛾的杀虫活性

作  者:
左玲霞;杨敏丽;谢晓鹏
单  位:
宁夏大学能源化工重点实验室;宁夏育才中学;银川大学石油化工学院
关键词:
野西瓜苗;小菜蛾;杀虫活性[1]
摘  要:
采用乙醇超声提取法得到野西瓜苗乙醇提取物,测试提取物对小菜蛾的触杀活性,然后用5种不同极性溶剂萃取乙醇提取物,得到各溶剂萃取物,测试各溶剂萃取物对小菜蛾的触杀活性,并计算不同作用时间的校正死亡率。结果显示,野西瓜苗乙醇提取物对小菜蛾3龄幼虫具有较强的触杀活性,LC50为3.2 mg·mL-1;不同溶剂萃取物活性由高到低依次为氯仿>石油醚>乙酸乙酯>正丁醇>水,氯仿萃取物72h对小菜蛾3龄幼虫触杀活性最高,校正死亡率达到96.67%,这一结果也显示野西瓜苗的杀虫活性物质为一类极性较弱的化合物。
译  名:
Study on Insecticidal Activity of the Extract of Hibiscus trionum by Different Solvent to Plutella xylostella
作  者:
ZUO Ling-xia1,2,YANG Min-li2,XIE Xiao-peng3(1.College of Oil and Chemistry Industry,Yinchuan University,Yinchuan 750105,Ningxia,China;2.Key Laboratory of Energy Sources & Chemical Engineering,Ningxia University,Yinchuan 750021,China)
关键词:
Hibiscus trionum L;Plutella xylostella;insecticidal activity
摘  要:
Taking Hibiscus trionum L.as an investigating object,ethanol extracts from Hibiscus trionum L.were obtained through alcohol-UW extracting.The activities of extracts to Plutella xylostella were tested to calculate the mortality rate and the corrected mortality rate.The results showed that the ethanol-extracts from H.trionum had the stronger activity.LC50 was 3.2 mg.mL-1.The activities of each extract was in order as follows:chloroform> petroleum ether > ethyl acetate > butanol > water.The extracts by chloroform for 72h had the highest contacting toxicity to the 3rd instar larva,with the corrected mor-tality rate of 96.67% resp.The result also indicated the insecticidal active substances in H.trionum were a kind of puny po-lar compounds.

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