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[Ochratoxin A: study of grain contamination]
G P Kononenko1, A A Burkin, E V Zotova
1All-Russia Institute of Veterinary Sanitation, Hygiene, and Ecology, Russian Academy of Agricultural Sciences, Moscow, Russia.
Prikladnaia Biokhimiia I Mikrobiologiia
|April 26, 2000
Summary
Ochratoxin A contamination was detected in grain samples using a novel enzyme immunoassay. Significant levels of this mycotoxin were found, particularly in forage grains, posing potential risks.
Area of Science:
- Food safety analysis
- Mycotoxin detection
- Immunochemical assays
Context:
- Ochratoxin A (OA) is a prevalent mycotoxin found in various agricultural commodities.
- Grain contamination poses risks to animal feed and human food chains.
- Accurate quantification methods are crucial for risk assessment.
Purpose:
- To quantitatively monitor Ochratoxin A in grain extracts.
- To develop and validate an indirect solid-phase enzyme immunoassay (ELISA) for OA detection.
- To assess the prevalence and concentration of OA contamination in grain samples.
Summary:
- An indirect solid-phase enzyme immunoassay utilizing immobilized OA-gelatin conjugate and specific antibodies was employed.
- The assay detected OA contamination in 1.7% to 18.5% of grain samples, with concentrations ranging from 25.9 to 291.7 µg/kg.
- Forage grain analysis revealed higher OA levels, from 440 to 3250 µg/kg.
Impact:
- Highlights the widespread issue of Ochratoxin A contamination in grains.
- Provides a sensitive immunoassay method for routine monitoring.
- Underscores the need for stringent quality control in grain production and processing.