食品科学 ›› 2009, Vol. 30 ›› Issue (18 ): 350-355.doi: 10.7506/spkx1002-6630-200918082

• 分析检测 • 上一篇    下一篇

卡那霉素酶联免疫检测方法的建立及检测条件的优化

刘丽强,华朱鸣,许定花,陈 伟,胥传来*   

  1. 江南大学食品学院
  • 收稿日期:2009-05-26 出版日期:2009-09-15 发布日期:2010-12-29
  • 通讯作者: 胥传来 E-mail:xcl@jiangnan.edu.cn

Development and Optimization of ELISA Detection of Kanamycin

LIU Li-qiang,HUA Zhu-ming,XU Ding-hua,CHEN Wei,XU Chuan-lai*   

  1. School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
  • Received:2009-05-26 Online:2009-09-15 Published:2010-12-29
  • Contact: XU Chuan-lai E-mail:xcl@jiangnan.edu.cn

摘要:

制备卡那霉素的多克隆抗体,建立了间接竞争ELISA 方法,并对间接ELISA 检测方法进行条件优化。结果表明:最佳实验条件是以PBS(0.01mol/L、pH7.4)作为包被液,以碳0.05mol/L pH9.6 酸缓冲液加0.1% 的酪蛋白封闭酶标板;最佳的抗体稀释液配方是PBST 溶液加4% 的聚乙二醇6000,溶液选取pH8.5 为佳,二抗稀释度选择1:3000,标准品稀释液则选择0.01mol/L pH7.4 的PBS 溶液。最终,卡那霉素的IC50 值为9.9ng/ml,最低检测限为1.0ng/ml,检测的线性范围为1~500ng/ml。

关键词: 卡那霉素, ELISA, 抗体, 直接竞争, 间接竞争

Abstract:

Indirect competitive ELISA was adopted to develop a rapid and specific assay capable of detecting kanamycin. The optimal working conditions were as follows: coating buffer, 0.01 mol/L PBS solution at pH 7.4; confining buffer, 0.05 mol/L carbonate-bicarbonate buffer containing 0.1% casein solution; antibody dilution buffer, PBST buffer containing 4% polyethylene glycol 6000 at pH 8.5; dilution of secondary antibody, 1:3000; and standard dilution buffer, the same to coating buffer. The IC50 of kanamycin was 9.9 ng/ml, the detection limit 1.0 ng/ml, and the linear detection range 1-200 ng/ml.

Key words: kanamycin, ELISA, antibody, direct competition, indirect competition

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