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Development of a rapid competitive indirect ELISA procedure for the determination of deoxynivalenol in cereals

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A rapid and sensitive method based on competitive indirect enzyme-linked immunosorbent assay (ciELISA) was developed and validated for the detection of DON (deoxynivalenol) in cereals with the confirmation of the reliable ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Within this method, the IC50 (half maximal inhibitory concentration of a substance) of the DON-specific monoclonal antibody (MAb) we produced was 61.10 ng/mL. The limit of detection (LOD) value, measured by IC10, was 6.12 ng/mL, which is below the maximum residue levels (MRLs) established for DON in various cereals. In spiked samples, the recoveries ranged from 79.3% to 115.2% for maize and from 74.3% to 118.3% for wheat. This method was compared with the UPLC-MS/MS method by testing four concentrations. The correlation coefficient for the two methods was 0.9884 in a linear-regression analysis. The results illustrated the reliability of the ciELISA method for the determination of cereal samples.
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Keywords: UPLC-MS/MS; analysis; ciELISA; deoxynivalenol

Document Type: Research Article

Affiliations: Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine,China Agricultural University, 1000193,Beijing, China

Publication date: March 1, 2012

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