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Formation of γ-ketols from 13- and 9-hydroperoxides of linolenic acid by flaxseed hydroperoxide isomerase

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Lipids

Abstract

A reexamination of the flaxseed hydroperoxide isomerase reaction showed that a minor enzymic product (ca. 5%), identified as a γ-ketol, was present. The substrates were the 13- or 9-hydroperoxides of linolenic acid, which were converted to 9-hydroxy-12-oxo-cis-15-trans-11-octadecadienoic acid, respectively. These compounds were formed in addition to the major products reported earlier: a 12,13-α-ketol and 12-oxo-cis-10,15-phytodienoic acid from the 13-isomer, and a 9,10-α-ketol from the 9-isomer.

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Authors and Affiliations

  1. U.S. Department of Agriculture, Science and Education Administration, Agriculatural Research, Department of Biochemistry, North Dakota State University, 58105, Fargo, ND

    Paul Feng, Brady A. Vick & Don C. Zimmerman

Authors
  1. Paul Feng
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  2. Brady A. Vick
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  3. Don C. Zimmerman
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Feng, P., Vick, B.A. & Zimmerman, D.C. Formation of γ-ketols from 13- and 9-hydroperoxides of linolenic acid by flaxseed hydroperoxide isomerase. Lipids 16, 377–379 (1981). https://doi.org/10.1007/BF02534967

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  • DOI: https://doi.org/10.1007/BF02534967

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