Abstract
An immunochemically based test for non-instrumental simultaneous detection of zearalenone (ZEA) and T-2 toxin (T2) in feed was developed. The method combines clean-up of sample extract, pre-concentration of analytes by immunoextraction and immunodetection through the enzymatic reaction of horseradish peroxidase (HRP). The test is housed inside a standard 1-mL solid-phase extraction column and consists of three layers: two test layers (one for ZEA and another for T2) with immobilised specific antibodies and one control layer with bound anti-HRP antibodies. Feed extract was passed through an additional column with clean-up layer, which was disconnected after extract application. Total assay time was about 15 min for six samples and detection time was 4 min after chromogenic substrate application. Under optimised conditions a cut-off level for ZEA and T2 of 100 µg/kg was established. Different feed types were analysed for ZEA and T2 contamination by the proposed method and results were confirmed by LC-MS/MS.
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Acknowledgments
The authors would like to acknowledge the cooperation agreement between Ghent University and Saratov State University. The Belgian federal Science Policy is acknowledged for its financial support; bilateral action; joint Belgian–Chinese project on “Joint study of Fusarium and related mycotoxins in food: detection and control” Bl/02/C46.
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Basova, E.Y., Goryacheva, I.Y., Rusanova, T.Y. et al. An immunochemical test for rapid screening of zearalenone and T-2 toxin. Anal Bioanal Chem 397, 55–62 (2010). https://doi.org/10.1007/s00216-009-3328-1
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DOI: https://doi.org/10.1007/s00216-009-3328-1