中国农业科学 ›› 2005, Vol. 38 ›› Issue (02): 308-312 .

• 植物保护 • 上一篇    下一篇

拟除虫菊酯类农药多残留酶免疫分析方法的建立

骆爱兰,余向阳,刘贤进   

  1. 江苏省农业科学院食品质量安全与检测研究中心
  • 收稿日期:2004-03-02 修回日期:1900-01-01 出版日期:2005-02-10 发布日期:2005-02-10
  • 通讯作者: 刘贤进

Development of Enzyme Immunoassays for Pyrethriods

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  1. 江苏省农业科学院食品质量安全与检测研究中心
  • Received:2004-03-02 Revised:1900-01-01 Online:2005-02-10 Published:2005-02-10

摘要: 以间苯氧基苯甲酸(PBA)为半抗原,与牛血清蛋白偶联后免疫新西兰大白兔,获得对多种菊酯类农药有特异性的广谱性抗体。以6-氨基己酸法合成PBA与OVA之间含有六碳骨架的桥的偶联物作包被原,建立并优化了间接竞争ELISA检测方法,对PBA最低检出限达0.193 ?g·ml-1,抑制中浓度为3.707 ?g·ml-1,且对氯菊酯、甲氰菊酯、氯氰菊酯、三氟氯氰菊酯、溴氰菊酯均有特异性识别,对氰戊菊酯识别弱,抑制中浓度分别为4.066、4.232、4.286、4.874、8.979、77.360 ?g·ml-1。结果表明,该抗体可用于多种菊酯类农药残留筛选检测。

关键词: 拟除虫菊酯, 农药残留, 酶免疫分析方法

Abstract: 3-phenoxybenzoic acid (PBA) was used as generic hapten in order to generate broad specificity antibody against a group of pyrethriod insecticides. Assay performance was improved by use of a coating antigen, which possessed a six-carbon spacer arm between the hapten and carrier protein. Typical detection limits for PBA was 0.193 ?g·ml-1with an I50 value of 3.707 ?g·ml-1. Different cross-reactions with the closely related pyrethriods,including permethrin, fenpropathrin, cypermetnrin, cyhalothrin and deltamethrin, were observed, with I50 value of 4.066, 4.232,4.286,4.874,8.979 ?g·ml-1, respectively; There was a low cross reactivity for fenvalerate with an I50 value of 77.360 ?g·ml -1. The result developed in this study indicated the antibody was practicable to screen the residues of pyrethriod insecticides.

Key words: Pyrethroids, Pesticide residue, ELISA