Journal of the American Oil Chemists’ Society

, Volume 46, Issue 8, pp 409–416

Kinetics of linoleate oxidation in model systems

  • T. P. Labuza
  • H. Tsuyuki
  • M. Karel
Technical

DOI: 10.1007/BF02545625

Cite this article as:
Labuza, T.P., Tsuyuki, H. & Karel, M. J Am Oil Chem Soc (1969) 46: 409. doi:10.1007/BF02545625

Abstract

Oxidation of methyl linoleate, trilinoleate and linoleic acid has been studied in model systems based on various solid supports. Oxidation was followed by measurement of oxygen absorption, peroxide values and products of oxidation as a function of moisture equilibrium relative humidity. Effects of various metals, histidine and the antioxidants propyl gallate and butylated hydroxytoluene were studied. The results indicate: (a) at 50 C oxidation of protein increases with increasing moisture content and the protein interacts with peroxides changing the overall oxidation rate; (b) increasing moisture content shows the same inhibitory effect on oxidation of trilinoleate as it does on methyl linoleate; (c) the effectiveness of antioxidants is increased with increasing humidity but some chelating agents complexed with metals become catalytic at the higher moisture content; and (d) at moisture contents in the region of capillary condensation, mobility of reactants is enhanced since the rate of oxidation increases significantly.

Copyright information

© AOCS Press 1969

Authors and Affiliations

  • T. P. Labuza
    • 1
  • H. Tsuyuki
    • 1
  • M. Karel
    • 1
  1. 1.Department of Nutrition and Food ScienceMassachusetts Institute of TechnologyCambridge