Degradation products of autoxidized omega-3 fatty acids
Abstract
Eicosapentaenoic acid and docosahexaenoic acid were decreased 51% and 49% after 8 days of autoxidation of Menhaden oil with FeCl$\sb3$ catalyst. U.V. and T.L.C. analysis indicated that hydroperoxides are maximum after 48 hours of autoxidation without catalyst in. G.C. and G.C.-M.S. analysis of cis-11,14,17-eicosatrienoic acid shoes monohydroperoxides (11-OOH, 14-OOH, and 18-OOH) after autoxidation. Furthermore, dihydroperoxides (11,14-dihydroperoxy-cis-15,17-eicosadienoc acid, 11,14-dihydroperoxy eicosadienoic acid, 11,14-dihydroperoxy-15,17 eicosadienoic acid, 15,18-dihydroperoxy-11,13-eicosadienoic acid) and trihydroperoxides and an alcohol (a scission product at carbon 10) are detected. Therefore, the autoxidation of omega-3 fatty acid (cis-11,14,17-eicosatrienoic acid) follows the accepted mechanism of autoxidation.
Degree
Ph.D.
Advisors
Pratt, Purdue University.
Subject Area
Food science
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