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dc.contributor.authorChristy, Alfred A.
dc.contributor.authorXu, Zhanfeng
dc.contributor.authorHarrington, Peter de B
dc.date.accessioned2009-11-16T14:34:06Z
dc.date.issued2009
dc.identifier.citationChristy, A. A., Xu, Z. F., & Harrington, P. D. (2009). Thermal degradation and isomerisation kinetics of triolein studied by infrared spectrometry and GC-MS combined with chemometrics. Chemistry and Physics of Lipids, 158(1), 22-31. doi: 10.1016/j.chemphyslip.2008.12.002en
dc.identifier.issn0009-3084
dc.identifier.urihttp://hdl.handle.net/11250/138218
dc.descriptionAuthors version of article published in the journal: Chemistry and Physics of Lipids Published version available on Science Direct: http://dx.doi.org/10.1016/j.chemphyslip.2008.12.002en
dc.description.abstractTriolein, a triglyceride containing oleic acid as the only acid moiety in the glyceride molecules has been isothermally treated at 280,300,and 325 degrees C in glass vials under nitrogen atmosphere. The products formed during the thermal treatment at each temperature have been analysed both by infrared spectrometry and GC-MS. The CC-MS analysis was performed after derivatisation of the fatty acids into their methyl esters (FAMEs). Chemometric tools were used in determining the concentrations of the main products namely triolein and trieaidin in the thermally treated mixtures. The concentration profiles of the trielaidin formed during thermal treatment at the above three temperatures were used in determining activation energy for the cis-trans isomerisation of triolein. The combined analysis reveals that the thermal treatment induces not only cis-trans isomerisation but also fission and fusion in the molecules. Furthermore, migration of the double bond in oleic and elaidic acids forming cis and trans isomers of the 18:1 acid was also observed. The heat-induced isomerisation in triolein follows a zeroth order reaction with an activation energy 41 +/- 5 kcal/mol. (c) 2008 Elsevier Ireland Ltd. All rights reserveden
dc.format.extent523932 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoengen
dc.publisherElsevieren
dc.titleThermal degradation and isomerisation kinetics of triolein studied by infrared spectrometry and GC-MS combined with chemometricsen
dc.typeJournal articleen
dc.typePeer revieweden
dc.subject.nsiVDP::Mathematics and natural science: 400::Basic biosciences: 470::Biochemistry: 476en
dc.source.pagenumber22-31en
dc.source.volume158en
dc.source.journalChemistry and Physics of Lipidsen
dc.source.issue1en


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