食品科学 ›› 2011, Vol. 32 ›› Issue (12): 259-263.doi: 10.7506/spkx1002-6630-201112057

• 分析检测 • 上一篇    下一篇

百菌清ELISA检测方法的影响因素

郭乃菲,纪淑娟,周艳明,高 兴,于基成   

  1. 1.沈阳农业大学食品学院 2.大连民族学院生命科学学院
  • 出版日期:2011-06-25 发布日期:2011-06-10
  • 基金资助:
    辽宁省自然科学基金项目(20072916);大连民族学院人才引进项目(20086203)

Study on Influence Factors of ELISA for Chlorothalonil Residue

GUO Nai-fei1,2,JI Shu-juan1,ZHOU Yan-ming1,GAO Xing1,2,YU Ji-cheng2,*   

  1. 1. College of Food Science, Shenyang Agricultural University, Shenyang 110161, China; 2. College of Life Science, Dalian Nationalities University, Dalian 116600, China
  • Online:2011-06-25 Published:2011-06-10

摘要: 以方阵滴定法筛选适合百菌清酶联免疫吸附检测的包被抗原和抗体浓度,同时研究反应缓冲体系和pH值等因素对酶联免疫吸附方法的影响以及百菌清多克隆抗体的亲和性和特异性,建立蔬菜中百菌清残留检测的间接竞争酶联免疫吸附法。结果表明:方法最低检测限(IC20)为0.0123ng/mL,回收率为84.0%~89.8%,变异系数为3.0%~7.6%,与百菌清结构类似化合物交叉反应率均小于0.01%,可在试剂样品检测中应用。

关键词: 百菌清, ELISA, 多克隆抗体, 交叉反应

Abstract: An indirect competitive ELISA method was established for determining chlorothalonil residues in vegetables through screening appropriate concentrations of antigen and antibody, exploring the effects of buffer system and pH on ELISA and evaluating the specificity and affinity of polyclonal antibodies. The results showed that the detection limit (IC20) of ELISA was 0.0123 ng/mL. The recovery rate of ELISA was 84.0%-89.8% with standard deviation of 3.0%-7.6%. The cross-reactivity (CR) with chlorothalonil analog was less than 0.01%.

Key words: chlorothalonil, ELISA, polyclonal antibody, cross-reactivity

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