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Antioxidant losses during the induction period of fat oxidation

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Oil & Soap

Summary

GALLIC ACID and ascorbic acid tested alone or in combination as antioxidants for cottonseed oil, disappeared gradually during the induction period under conditions of accelerated autoxidation. By the end of the induction period no gallic acid could be determined in the oxidizing fat substrate. However, ascorbic acid never completely disappeared under the same conditions. When the two substances were used together, no synergistic effect was noted with respect to an increased length of the induction period but the rate of disappearance of the individual compounds was altered somewhat, each substance acting apparently to delay the destruction of the other. The rate of disappearance of gallic acid alone was found to be independent of its initial concentration in the oil substrate.

A study of the possible oxidation products of ascorbic acid undergoing oxidation in an autoxidizing oil showed the formation of dehydroascorbic acid but no formation of oxalic acid.

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Author information

Authors and Affiliations

  1. Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania

    L. J. Filer Jr., K. F. Mattil & H. E. Longenecker

Authors
  1. L. J. Filer Jr.
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  2. K. F. Mattil
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  3. H. E. Longenecker
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Additional information

The work described in this paper was done under a contract, recommended by the Committee on Medical Research, between the Office of Scientific Research and Development and the University of Pittsburgh. Contribution No. 532 from the Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania.

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Filer, L.J., Mattil, K.F. & Longenecker, H.E. Antioxidant losses during the induction period of fat oxidation. Oil Soap 21, 289–292 (1944). https://doi.org/10.1007/BF02547318

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  • DOI: https://doi.org/10.1007/BF02547318

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