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- Title
Thermal oxidation of lipids in monolayers II. Unsaturated fatty acid esters.
- Authors
Hau, Lung-Bin; Nawar, W.
- Abstract
To investigate whether oxidation of lipids in the ordered state differs from that in the bulk phase upon heating, ethyl oleate, ethyl linoleate and ethyl linolenate adsorbed as monolayers on silica were used as model systems. For both bulk and monolayer samples, the major decomposition products found were those typical of classical decomposition of hydroperoxides. However, quantitative and qualitative differences were observed after heating. The decomposition patterns in monolayers were much simpler than those of the bulk samples. The major decomposition products of the substrates in monolayers were ethyl 9-oxononanoate and nonanal from ethyl oleate, ethyl 9-oxononanoate and hexanal from ethyl linoleate, and ethyl 9-oxononanoate and hexenal from ethyl linolenate. It is likely that the acidic nature of silica favored a selective heterolytic cleavage of hydroperoxide intermediates.
- Publication
Journal of the American Oil Chemists' Society (JAOCS), 1988, Vol 65, Issue 8, p1307
- ISSN
0003-021X
- Publication type
Article
- DOI
10.1007/BF02542411