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Survey of cereal grains and soybeans for the presence of aflatoxin.2. Corn and soybeans.
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1969
Year
Unknown Venue
Food ChemistrySoybean SamplesAllergyMycotoxin FormationBioanalysisCrop ProtectionAgricultural EconomicsDuckling TestGrain ScienceCereal GrainsFood ContaminantToxicologyMycotoxinsCorn SamplesMedicineFood ToxicologyFood SafetyHealth Sciences
A total of 1311 corn samples and 866 soybean samples, including samples from all grades and 2 different crop years, 1964 and 1965, were assayed for the presence of aflatoxin. Samples were extracted by the procedure used in the survey of wheat, grain sorghum and oat samples, and extracts were tested for the presence of aflatoxin by thin-layer chromatography (TLC). The sensitivity limit of the analysis as carried out was 2-5 parts/billion of the metabolite. Of the 35 corn samples that were positive by TLC, 30 gave aflatoxin like responses in ducklings. 5 of these were in grade 5, and 25 were in sample grade. 2 of the 866 soybean samples tested contained aflatoxin by TLC and the duckling test. These were in sample grade. [See preceding abstr.]