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Development and application of salting-out assisted liquid/liquid extraction for multi-mycotoxin biomarkers analysis in pig urine with high performance liquid chromatography/tandem mass spectrometry

文献类型： 外文期刊

作者： Song, Suquan 1 ; Ediage, Emmanuel Njumbe 1 ; Wu, Aibo 2 ; De Saeger, Sarah 1 ;

作者机构： 1.Univ Ghent, Lab Food Anal, B-9000 Ghent, Belgium

2.Shanghai Acad Agr Sci, Inst Agrifood Stand & Testing Technol, Shanghai 201403, Peoples R China

关键词： Biomarker;LC-MS/MS;Mycotoxins;Pig urine;Salting-out liquid-liquid extraction

期刊名称：JOURNAL OF CHROMATOGRAPHY A （ 影响因子：4.759； 五年影响因子：4.302 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Direct determination of urinary mycotoxins is a better approach to assess individual's exposure than the indirect estimation from average dietary intakes. In this study, a new analytical method was developed and validated for simultaneous analysis of aflatoxin B_1, deoxynivalenol, fumonisin B_1, ochratoxin A, zearalenone and T2 toxin and their metabolites in pig urine. In total 12 analytes were selected. A salting-out assisted liquid-liquid extraction procedure was used for sample preparation. High performance liquid chromatography/tandem mass spectrometry was used for the separation and detection of all the analytes. The extraction recoveries were in a range of 70-108%, with the intra-day relative standard deviation and inter-day relative standard deviation lower than 25% for most of the compounds at 3 different concentration levels. Meanwhile the method bias for all the analytes did not exceed 20%. The limits of quantification ranged from 0.07ngmL~(-1) for ochratoxin A to 3.3ngmL~(-1) for deoxynivalenol. Matrix effect was evaluated in this study and matrix-matched calibration was used for quantification. The developed method was also validated for human urine as an extension of its application. Finally, the developed method was applied in a pilot study to analyze 28 pig urine samples. Deoxynivalenol, aflatoxin B_1, fumonisin B_1 and ochratoxin A were detected in these samples.

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