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| 以壳聚糖为载体束缚脂肪酸吸附CO2在诱捕白纹伊蚊中的应用研究 |
| Effectiveness of chitosan as carrier bound fatty acids to adsorb CO2 as a lure for trapping Aedes albopictus |
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| DOI： |
| 中文关键词: 壳聚糖 脂肪酸 二氧化碳 离子液体 白纹伊蚊 增效 |
| 英文关键词:Chitosan fatty acid carbon dioxide ionic liquid Aedes albopictus synergism |
| 基金项目:广州市科技计划项目（201804010020；201707010471；201607010084） |
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| 中文摘要: |
| 为了从壳聚糖+脂肪酸离子液体吸附CO2化合物中筛选出对白纹伊蚊Aedes albopictus具有良好引诱效果的化合物，采用陷阱诱捕法分别测定了壳聚糖+丙酮酸、壳聚糖+乙酸、壳聚糖+丙酸 3种脂肪酸离子液体化合物及其吸收CO2对白纹伊蚊成虫的诱捕效果。结果表明，在供试的3种脂肪酸离子液体中，等物质的量吸收CO2的性能依次是丙酮酸>乙酸=丙酸，对白纹伊蚊的诱蚊效果依次是丙酮酸>乙酸=丙酸。其中最优配方比是壳聚糖∶丙酮酸∶CO2=1∶25∶0.3621，平均累计诱蚊量比单组分丙酮酸增加31.37%，比单组分CO2增加30.73%,比对照纯水增加59.52%（P<0.05）。相同质量的3种脂肪酸吸附CO2，具有协同增效作用，平均累计诱蚊量均显著优于单组分脂肪酸（P<0.05）。现场诱蚊试验结果表明，壳聚糖对3种脂肪酸均有缓释作用，其诱蚊持效期延长1.71~3.00倍。根据离子液体原理以壳聚糖为载体束缚脂肪酸吸附CO2并结合陷阱诱捕器，能够显著提高对白纹伊蚊的诱捕数量（混合物60 d的累计诱蚊总数量是单组分的1.62~1.78倍）。研究结果为进一步开发可适用于家居办公环境中使用的诱蚊剂提供了研究基础。 |
| 英文摘要: |
| To screen a attractant compound for Aedes albopictus from chitosan+fatty acid ionic liquid compounds that adsorbed CO2, trapping effects on adult A. albopictus of three fatty acid ionic liquid compounds, chitosan+pyruvic acid, chitosan+acetic acid, chitosan+propionic acid that adsorbed CO2 were determined by trap method. The results showed that in the three kinds of fatty acid ionic liquids assays, CO2 absorbing capability by the amount of equal substances was pyruvic acid>acetic acid=propionic acid, and the mosquito trapping effect on A. albopictus was pyruvic acid>acetic acid=propionic acid. The top optimum ratio was chitosan∶pyruvic acid∶CO2=1∶25∶0.3621, whose mean accumulated mosquito capture amount was 31.37% higher than pyruvic acid alone, 30.73% higher than CO2, and 59.52% higher than the distilled water control (P<0.05). The three fatty acids adsorbed CO2 of the same quality had synergistic effect. The mean cumulative mosquito capture amount of three fatty acid mixture was significantly increasing than that of single fatty acid component (P<0.05). The field mosquito trapping assay showed that chitosan had slow-release effect on three fatty acids, which prolonged the mosquito trapping capability by 1.71~3.00 times. According to the principle of ionic liquid, the trap for A. albopictus can be significantly improved by chitosan as carrier to fatty acid to adsorb CO2 (mean cumulative mosquito capture amount of the mixture for 60 days is 1.62~1.78 times that of single component). The results provided a avenue for the development of mosquito attractants for indoor environment. |
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