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Decontamination of aflatoxin-contaminated peanut meal using monomethylamine:Ca(0H)2

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Journal of the American Oil Chemists’ Society

Abstract

Radiolabeled aflatoxin B1 was added to naturally contaminated peanut meal, and the fate of aflatoxin-related by-products after decontamination by monomethylamine:Ca(OH)2 was monitored. The decontamination process resulted in a 94-100% reduction in aflatoxin levels, depending on the level of contamination and the chemical structure of the aflatoxin. Following air drying and extractions with chloroform/water, methanol, acetic acid and water, the majority (69-86%) of the,decontamination by-products remained with the residue. Significant amounts of aflatoxin B1, (12%) and aflatoxin-related compounds (27%) were liberated from the residue after enzymic digestion. Isolation and identification studies revealed a wide variety of aflatoxin-related decontamination by-products. High performance liquid and thin layer Chromatographie separation of chloroform-soluble compounds revealed compounds that exhibited some degree of toxicity. Comparative toxicity tests showed that, although some decontamination by-products exhibited elevated responses to specific toxicity tests, the relative toxicity was inferior to aflatoxin B1. The moisture, protein and nitrogen levels did not change significantly. There was a significant change in the mold flora following the decontamination process, and the product was susceptible to recontamination.

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Authors and Affiliations

  1. Office of Health Affairs, Food and Drug Administration, 20857, Rockville, MD

    D. L. Park

  2. Service des Mycotoxines, Institut National de la Recherche Agronomique, 75013, Paris, France

    M. Jemmali

  3. Centre National de la Recherche Scientifique, Institut de Recherches Scientifiques sur le Cancer, 94800, Villejuif, France

    C. Frayssinet & C. Lafarge-Frayssinet

  4. Service des Mycotoxines, Institut National de la Recherche Agronomique, 75013, Paris, France

    M. Yvon

Authors
  1. D. L. Park
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  2. M. Jemmali
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  3. C. Frayssinet
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  4. C. Lafarge-Frayssinet
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  5. M. Yvon
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Park, D.L., Jemmali, M., Frayssinet, C. et al. Decontamination of aflatoxin-contaminated peanut meal using monomethylamine:Ca(0H)2 . J Am Oil Chem Soc 58, A995–A1002 (1981). https://doi.org/10.1007/BF02679311

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  • DOI: https://doi.org/10.1007/BF02679311

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