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http://hdl.handle.net/10773/9003
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Villaverde, Juan José | pt |
dc.contributor.author | Santos, Sónia A. O. | pt |
dc.contributor.author | Maciel, Elisabete | pt |
dc.contributor.author | Simões, Mário M. Q. | pt |
dc.contributor.author | Pascoal Neto, Carlos | pt |
dc.contributor.author | Domingues, M. Rosário M. | pt |
dc.contributor.author | Silvestre, Armando J. D. | pt |
dc.date.accessioned | 2012-09-10T11:18:51Z | - |
dc.date.issued | 2012 | - |
dc.identifier.issn | 1076-5174 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/9003 | - |
dc.description.abstract | This study reports the identification of oligomeric alkenylperoxides by electrospray ionization mass spectrometry (ESI-MS) and tandem mass spectrometry (ESI-MS2), during the oxidation of oleic, linoleic and linolenic acids with Fenton's (Fe2+/H2O2) and Fe2+/O2 systems. The reactions were followed by ferrous oxidation-xylenol orange method together with GC-MS and GC-FID, allowing to observe that both oxidation systems are different in terms of hydroperoxide evolution, probably due to the presence of different intermediate reactive species: perferryl ion and OH radical responsible for the decomposition of lipid hydroperoxides and formation of new compounds. The analysis of ESI-MS in the negative mode, obtained after oxidation of each fatty acid, confirmed the presence of the monomeric oxidation products together with other compounds at high mass region above m/z 550. These new ions were attributed to oligomeric structures, identified by the fragmentation pathways observed in the tandem mass spectra. Copyright (C) 2012 John Wiley & Sons, Ltd. | pt |
dc.language.iso | eng | pt |
dc.publisher | John Wiley and Sons | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/3599-PPCDT/109579/PT | - |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F42021%2F2007/PT | - |
dc.rights | restrictedAccess | por |
dc.subject | Fenton’s and Fe2+/O2 systems | pt |
dc.subject | Unsaturated fatty acids | pt |
dc.subject | Oligomeric alkenylperoxides | pt |
dc.subject | Oxidation | pt |
dc.subject | Mass spectrometry | pt |
dc.title | Formation of oligomeric alkenylperoxides during the oxidation of unsaturated fatty acids: an electrospray ionization tandem mass spectrometry study | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 163 | pt |
degois.publication.issue | 2 | pt |
degois.publication.issue | 2 | - |
degois.publication.lastPage | 172 | pt |
degois.publication.title | Journal of Mass Spectrometry | pt |
degois.publication.volume | 47 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.identifier.doi | 10.1002/jms.2047 | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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J.Mass.Spectrom.2012 47 163_172.pdf | 450.67 kB | Adobe PDF |
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