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为了研究九里香不同溶剂提取物对白纹伊蚊幼虫的毒杀作用,试验采用浸液法测定了九里香乙酸乙酯提取物、乙醇提取物和水煎煮提取物对白纹伊蚊幼虫的毒杀活性。结果表明:九里香的乙酸乙酯提取物、乙醇提取物和水煎煮提取物对白纹伊蚊幼虫处理24 h的半数致死浓度(LC50)分别为5.079 mg/m L、6.531 mg/m L、17.445 mg/m L。说明九里香不同溶剂提取物对白纹伊蚊幼虫均具有一定的杀灭作用,且以乙酸乙酯提取物效果最佳,乙醇提取物次之,水煎煮提取物效果相对较差。
In order to study the toxic effects of different solvent extracts of Jirixiang on Aedes albopictus larvae, the toxicity of Jiuliaoxiang ethyl acetate extract, ethanol extract and decoction extract to Aedes albopictus larvae was determined by immersion method active. The results showed that LC50 of Jiulixiang ethyl acetate extract, ethanol extract and decoction of boiling water on Aedes albopictus larvae for 24 h were 5.079 mg / m L, 6.531 mg / m L, 17.445 mg / m L. The results showed that Jiulixiang different solvent extracts had some killing effects on Aedes albopictus larvae, and ethyl acetate extract had the best effect, followed by ethanol extract, and the effect of boiling water extract was relatively poor.