Development of an immunoaffinity column method using broad-specificity monoclonal antibodies for simultaneous extraction and cleanup of quinolone and sulfonamide antibiotics in animal muscle tissues

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• 作者：Cun Li ; Zhanhui Wang ; Xingyuan Cao ; Ross C. Beier ; Suxia Zhang ; Shuangyang Ding ; Xiaowei Li ; Jianzhong Shen
• 关键词：Immunoaffinity ; Quinolones ; Sulfonamides ; Muscle tissues ; Residue analysis ; LC– ; ESI-MS/MS
• 刊名：Journal of Chromatography A
• 出版年：2008
• 出版时间：31 October 2008
• 年：2008
• 卷：1209
• 期：1-2
• 页码：1-9
• 全文大小：348 K

文摘

This paper describes a novel mixed-bed immunoaffinity column (IAC) method. The IAC was produced by coupling anti-quinolone and anti-sulfonamide broad-specificity monoclonal antibodies to Sepharose 4B for simultaneously isolating 13 quinolones (QNs) and 6 sulfonamides (SAs) from swine and chicken muscle tissues, followed by antibiotic determination using liquid chromatography–tandem mass spectrometry (LC–MS/MS). A new broad-specificity Mab (B1A4E8) toward sulfonamides was produced using sulfamethoxazole as hapten that demonstrated cross-reactivities to 6 SAs in the range of 31–112 % . IAC optimized conditions were found that allowed the IAC to be reused for selective binding of both SAs and QNs. Recoveries of all 19 antibiotics from animal muscle ranged from 72.6 to 107.6 % , with RSDs below 11.3 % and 15.4 % for intra-day and inter-day experiments, respectively. The limit of quantification ranged from 0.5 to 3.0 ng/g. The strategy used here for a mixed-bed IAC may be used to study other compounds and more than two classes of analytes simultaneously.