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Determination of aflatoxins B1, B2, G1, G2 and ochratoxin A in animal feed by ultra high-performance liquid chromatography–tandem mass spectrometry

✍ Scribed by Sergio José López Grío; Antonia Garrido Frenich; José Luis Martínez Vidal; Roberto Romero-González

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
192 KB
Volume
33
Category
Article
ISSN
1615-9306

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✦ Synopsis

Abstract

A rapid and simple method was developed to determine aflatoxins B1, B2, G1, G2 and ochratoxin A in animal feed and pet foods by UHPLC–MS/MS. Because the complexity of the evaluated matrices, the proposed method is based on sonication extraction using an ACN/water mixture (80:20 v/v) followed by a clean‐up step utilising C~18~ as sorbent. Performance parameters of the method were evaluated, including linearity, trueness, precision and LOQ. Good linearity was found for all mycotoxins, with determination coefficients higher than 0.99 in the range considered, using matrix‐matched calibration for quantification purposes. Recoveries ranged from 84 to 113%, with RSD lower than 20%, whereas LOQs were 5 μg/kg for the assayed mycotoxins. Finally, the method was successfully applied to the analysis of 19 real samples, detecting aflatoxin G2 in two samples at 13 and 17 μg/kg respectively, whereas the other mycotoxins were detected at trace levels (

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