Impact of Association Colloids on Lipid Oxidation in Triacylglycerols and Fatty Acid Ethyl Esters.
The impact of association colloids on lipid oxidation in triacylglycerols and fatty acid ethyl esters was investigated. Association colloids did not affect lipid oxidation of high oleic safflower and high linoleic safflower triacylglycerols, but were prooxidative in fish triacylglycerols. Association colloids retarded aldehyde formation in stripped ethyl oleate, linoleate, and fish oil ethyl esters. Interfacial tension revealed that lipid hydroperoxides were surface active in the presence of the surfactants found in association colloids. The lipid hydroperoxides from ethyl esters were less surface active than triacylglycerol hydroperoxides. Stripping decreased iron and copper concentrations in all oils, but more so in fatty acid ethyl esters. The combination of lower hydroperoxide surface activity and low metal concentrations could explain why association colloids inhibited lipid oxidation in fatty acid ethyl esters. This research suggests that association colloids could be used as an antioxidant technology in fatty acid ethyl esters.
['Homma|Rika|R|', 'Suzuki|Karin|K|', 'Cui|Leqi|L|', 'McClements|David Julian|DJ|', 'Decker|Eric A|EA|']
D003102:Colloids D003300:Copper D004042:Dietary Fats, Unsaturated D004355:Drug Stability D004952:Esters D005227:Fatty Acids D005395:Fish Oils D007501:Iron D015227:Lipid Peroxidation D010084:Oxidation-Reduction D010938:Plant Oils D014280:Triglycerides
association colloids lipid oxidation interfacial tension lipid hydroperoxides critical micelle concentration prooxidant transition metals