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Pyrrolidides for mass spectrometric determination of the position of the double bond in monounsaturated fatty acids

  • Symposium: Microbial Lipolytic Enzymes Presented at the AOCS 64th Spring Meeting, New Orleans
  • Published:
Lipids

Abstract

Mass spectra of pyrrolidides of monounsaturated straight chain fatty acids are presented and discussed. The spectra of pyrrolidides contain mainly ions from the polar part of the molecule. This gives simple spectra from which double bond positions can be deduced directly. If an interval of 12 atomic mass units is observed between the most intense peaks of clusters of fragments containing n and n−1 carbon atoms of the acid moiety, the double bond occurs between carbons n and n+1 in the molecule This rule is valid for double bonds occurring at positions Δ5-Δ15 in an 18-carbon chain and has been applied to acids having 10–24 carbon atoms.

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Authors and Affiliations

  1. The Hormel Institute, University of Minnesota, 55912, Austin, Minnesota

    Bengt A. Andersson (Hormell Fellow) & Ralph T. Holman

Authors
  1. Bengt A. Andersson
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  2. Ralph T. Holman
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Andersson, B.A., Holman, R.T. Pyrrolidides for mass spectrometric determination of the position of the double bond in monounsaturated fatty acids. Lipids 9, 185–190 (1974). https://doi.org/10.1007/BF02532690

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  • DOI: https://doi.org/10.1007/BF02532690

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