Concentration of ochratoxin A in breakfast cereals and snacks consumed in the United States |
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| Affiliation: | 1. Illinois Institute of Technology, Institute for Food Safety and Health, 6502 S. Archer Road, Bedford Park, Illinois 60501;2. U.S. Food and Drug Administration, Institute for Food Safety and Health, 6502 S. Archer Road, Bedford Park, Illinois 60501;3. School of Food Science, University of Idaho, 875 Perimeter Drive MS 2312, Moscow, Idaho 83844-2312;4. Agilent Technologies, Inc., 2850 Centerville Road, Wilmington, Delaware 19808, USA |
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| Abstract: | A total of 144 breakfast cereal and snack samples collected from six areas in the United States (U.S.) were surveyed for the presence of ochratoxin A (OTA). All samples are the processed products including mainly corn, oat, wheat, and rice. The analytical methods in this study were immunoaffinity columns (IAC) and high performance liquid chromatography (HPLC) with fluorescence detection (FLD). The method provided recoveries of OTA from all sample matrices in the range of 95–100%. The limits of detection and limits of quantification for OTA were 0.032 and 0.10 ng/g for corn, wheat, and rice based samples; 0.038 and 0.12 ng/g for oat based samples, respectively. Analytical results showed that 75 samples (52%) were contaminated with OTA in the range of 0.10 and 7.43 ng/g. Among the OTA contaminated samples, 40% were labeled as organic and 60% were conventional with mean concentrations of 1.21 and 1.07 ng/g, respectively. There were ten contaminated samples, all from oat based products, exceeding the maximum limits for OTA by European Commission Regulation (3 ng/g) in cereal based products. |
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| Keywords: | Ochratoxin A Breakfast cereals and snacks Immunoaffinity columns HPLC-FLD United States |
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