Design, synthesis and characterization of tracers and development of a fluorescence polarization immunoassay for the rapid detection of ractopamine in pork
作者:Baolei Dong、Sijun Zhao、Hongfang Li、Kai Wen、Yuebin Ke、Jianzhong Shen、Suxia Zhang、Weiming Shi、Zhanhui Wang
DOI:10.1016/j.foodchem.2018.07.147
日期:2019.1
In this study, 10 fluorescein-labeled ractopamine (RAC) derivatives (tracers) were synthesized and characterized to develop a rapid fluorescence polarization immunoassay (FPIA) for the detection of RAC in pork, using previously produced RAC polyclonal antibodies. The effect of the tracer structure on the sensitivity of the FPIA was investigated. The specificity of the FPIA was evaluated with 70 β-agonists
在这项研究中,使用先前生产的RAC多克隆抗体,合成了10种荧光素标记的ractopamine(RAC)衍生物(示踪剂),并进行了表征,以开发用于检测猪肉中RAC的快速荧光偏振免疫分析(FPIA)。研究了示踪剂结构对FPIA灵敏度的影响。用70种β激动剂和β受体阻滞剂评估FPIA的特异性。FPIA显示的检出限为0.56μgkg -1猪肉中RAC的回收率高,加标样品的回收率从74.8%到86.6%。包括样品预处理在内的总分析时间少于1小时。FPIA用于筛查150个商业猪肉样品中的RAC残留,其结果与酶联免疫吸附测定(ELISA)和超高效液相色谱-串联质谱法(UPLC-MS / MS)一致。我们的结果表明,这里开发的FPIA是一种快速,准确和灵敏的猪肉中RAC残留物筛选方法。