Kinetic study of acid-catalyzed conversion of aflatoxins B1 and G1 to B2a and G2a View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1972-02

AUTHORS

W. A. Pons, A. F. Cucullu, L. S. Lee, H. J. Janssen, L. A. Goldblatt

ABSTRACT

Adjusting dilute aqueous solutions of aflatoxins B1 and G1 to pH 1, 2 and 3, and heating over a range of 40–100 C resulted in the conversion of B1 to B2a and G1 to G2a as major products. Both B2a and G2a were identified by co-thin layer chromatography with authentic B2a and G2a and M1 on silica gel plates developed in two different solvents. The rate of disappearance of B1 or G1 at given temperature and at constant pH was found to be first order with respect to each aflatoxin. At given temperature the conversion is strongly pH dependent, a 10-fold increase in H+ ion (1 pH unit) producing about a 9-fold increase in the reaction rate, indicating first order dependent of the rate on H+ ion concentration. More... »

PAGES

124-128

References to SciGraph publications

  • 1965-04. Continuous soapstock acidulation in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1966-11. Absence of aflatoxin from refined vegetable oils in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1968-10. Improved objective fluorodensitometric determination of aflatoxins in cottonseed products in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1965-06. Engineering and economic aspects of continuous soapstock acidulation in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1970-06. Determination of aflatoxins in peanut and cottonseed soapstocks in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf02612642

    DOI

    http://dx.doi.org/10.1007/bf02612642

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1043525906

    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/5015682


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