A multi-analyte LC-MS/MS method for the analysis of 23 mycotoxins in different sorghum varieties: the forgotten sample matrix.

Emmanuel Njumbe Ediage, Christof Van Poucke, Sarah De Saeger

Index: Food Chem. 177 , 397-404, (2015)

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Abstract

An LC-MS/MS method was developed and validated for the detection and quantification of 23 mycotoxins in different varieties of sorghum. The method performance characteristics were as follows: suitable linearity ranges for all 23 mycotoxins with p-value >0.05; limits of detection (1.2-50 μg/kg), limits of quantification (2.5-100 μg/kg), repeatability (RSDr, 7-22%), intermediate precision (RSDR, 14-44%) and apparent recovery (0.2-11%, expressed as bias). The method was applied to analyze 10 samples obtained from retail shops in Belgium (n=8) and Germany (n=2). Nine of the 10 samples (90%) were positive for the following mycotoxins: aflatoxin B1 (50 μg/kg), alternariol monomethyl ether (