An immunochemical test for rapid screening of zearalenone and T-2 toxin

Anal Bioanal Chem. 2010 May;397(1):55-62. doi: 10.1007/s00216-009-3328-1. Epub 2009 Dec 10.

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 microg/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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animal Feed / analysis*
  • Animals
  • Antibodies, Immobilized
  • Chromatography, High Pressure Liquid
  • Chromatography, Liquid
  • Food Contamination / analysis*
  • Immunoenzyme Techniques
  • Mass Spectrometry
  • T-2 Toxin / analysis*
  • Toxins, Biological / analysis*
  • Triticum / chemistry
  • Zearalenone / analysis*

Substances

  • Antibodies, Immobilized
  • Toxins, Biological
  • Zearalenone
  • T-2 Toxin