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A direct and fast method to monitor lipid oxidation progress in model fatty acid methyl esters by high-performance size-exclusion chromatography

AuthorsMárquez Ruiz, Gloria ; Holgado, Francisca ; García Martínez, M. .; Dobarganes, M. Carmen
Issue Date2007
CitationJournal of Chromatography A 1165: 122- 127 (2007)
AbstractA new method based on high-performance size-exclusion chromatography (HPSEC) is proposed to quantitate primary and secondary oxidation compounds in model fatty acid methyl esters (FAMEs). The method consists on simply injecting an aliquot sample in HPSEC, without preliminary isolation procedures neither addition of standard internal. Four groups of compounds can be quantified, namely, unoxidised FAME, oxidised FAME monomers including hydroperoxides, FAME dimers and FAME polymers. Results showed high repeatability and sensitivity, and substantial advantages versus determination of residual substrate by gas-liquid chromatography. Applicability of the method is shown through selected data obtained by numerous oxidation experiments on pure FAME, mainly methyl linoleate, at ambient and moderate temperatures. © 2007 Elsevier B.V. All rights reserved.
Identifiersdoi: 10.1016/j.chroma.2007.08.001
issn: 0021-9673
Appears in Collections:(IF) Artículos
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