食品科学 ›› 2010, Vol. 31 ›› Issue (20): 307-310.doi: 10.7506/spkx1002-6630-201020063

• 分析检测 • 上一篇    下一篇

Eu3+ 标抗原盐酸克伦特罗的时间分辨荧光免疫检测

樊晓博1 , 2,杨金易2,高秀杰2,吴英松2,孙远明2,雷红涛2 ,*   

  1. 1.西北农林科技大学食品科学与工程学院
    2.广东省食品质量安全重点实验室,华南农业大学食品学院
  • 收稿日期:2009-12-28 修回日期:2010-06-26 出版日期:2010-10-25 发布日期:2010-12-29
  • 通讯作者: 雷红涛 E-mail:hongtao@scau.edu.cn

Time-resolved Fluoroimmunoassay of Clenbuterol Hydrochloride using Europium Labeled Antigen

FAN Xiao-bo1,2,YANG Jin-yi2,GAO Xiu-jie2,WU Ying-song2,SUN Yuan-ming2,LEI Hong-tao2,*   

  1. 1. College of Food Science and Engineering, Northwest A & F University, Yangling 712100, China;
    2. Key Laboratory of Food Quality and Safety of Guangdong Province, College of Food Science,
    South China Agricultural University, Guangzhou 510642, China
  • Received:2009-12-28 Revised:2010-06-26 Online:2010-10-25 Published:2010-12-29
  • Contact: LEI Hong-tao2 E-mail:hongtao@scau.edu.cn

摘要:

采用时间分辨荧光免疫分析(time-resolved fluoroimmunoassay,TRFIA)建立简便、快速、灵敏的盐酸克伦特罗(clenbuterol hydrochloride,CBL)检测方法。以自制盐酸克伦特罗单克隆抗体包被96 孔微孔板作为固相抗体,Eu3+ 标记抗原与样品中的CBL 竞争结合抗体,建立直接竞争荧光免疫分析体系。猪尿、组织样品添加回收率实验表明:方法灵敏度为0.02μg/L,样品回收率为91%~101%,与沙丁胺醇、莱克多巴胺等结构类似物的交叉反应率均小于1%。建立盐酸克伦特罗铕标抗原直接竞争时间分辨免疫检测方法,方法灵敏度高、特异性强,且操作简单,完全可以满足现有实际检测需求。

关键词: 盐酸克伦特罗, 时间分辨, 标记抗原, 检测

Abstract:

A convenient, rapid and sensitive method has been presented for the determination of clenbuterol hydrochloride (CBL) using the direct competitive time-resolved fluoroimmunoassay (TRFIA). In the direct competitive assay, the anti-CBL monoclonal antibody was bound on the surface of a 96-cell microplate, and samples containing CBL or the standards competed for the antibody binding sites with Eu3+ labeled antigen in the wells of microplate. The determinations of CBL in porcine urine and tissue samples showed that the limit of detection was 0.02μg/L, with spike recoveries ranging from 91% to 101%. The cross-reaction rates with other six drugs were less than 1%. The proposed TRFIA method is sensitive and specific, and can be used for the determination of CBL residue in food samples.

Key words: cenbuterol hydrochloride (CBL), time-resolved fluoroimmunoassay (TRFIA), antigen, detection

中图分类号: