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Original Articles

Simultaneous determination of chloramphenicol, florfenicol and florfenicol amine in ham sausage with a hybrid chemiluminescent immunoassay

, , , , , , , & show all
Pages 804-812 | Received 07 Sep 2012, Accepted 26 Feb 2013, Published online: 22 May 2013
 

Abstract

A novel chemiluminescent immunoassay utilising two types of primary antibodies (murine monoclonal antibody and rabbit polyclonal antibody) and two types of horseradish peroxidase–labelled secondary antibodies was established for simultaneously detecting multiple amphenicol residues in ham sausage. After combining the extract procedure of the target amphenicol into one simplified method, this hybrid chemiluminescent immunoassay could screen chloramphenicol (CAP), florfenicol (FF) and its metabolite florfenicol amine (FFA) at the same time by adding the corresponding secondary antibody. Ham sausage samples were analysed by using this hybrid immunoassay, with LODs of CAP being 0.01 μg kg−1, of FF being 2.8 μg kg−1 and of FFA being 3.0 μg kg−1. The applicability of the proposed method has been validated by determining CAP, FF and FFA in ham sausage samples with satisfactory results. Good recoveries and high correlation with traditional enzyme-linked immunosorbent assay and LC-MS/MS results illustrated that the developed hybrid chemiluminescent immunoassay could screen high-throughput ultra-trace amphenicol residues effectively at one time.

Acknowledgements

This study was supported by Beijing Science and Technology Research Project (D101105046110004) and Technology Pillar Program in the Twentieth Five-Year Plan Period (2011BAK10B01, 2011BAZ0319816).

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