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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Villaverde, Juan José Santos, Sónia A. O. Maciel, Elisabete Simões, Mário M. Q. Pascoal Neto, Carlos Domingues, M. Rosário M. Silvestre, Armando J. D. |
| Description | Country affiliation: Portugal Author Affiliation: Villaverde JJ ( CICECO and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal. jjvillaverde@ua.pt) |
| Abstract | This study reports the identification of oligomeric alkenylperoxides by electrospray ionization mass spectrometry (ESI-MS) and tandem mass spectrometry (ESI-MS(2)), during the oxidation of oleic, linoleic and linolenic acids with Fenton's (Fe(2+)/H(2)O(2)) and Fe(2+)/O(2) 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. |
| File Format | HTM / HTML |
| ISSN | 10765174 |
| Issue Number | 2 |
| Volume Number | 47 |
| e-ISSN | 10969888 |
| Journal | Journal of Mass Spectrometry |
| Language | English |
| Publisher | Wiley |
| Publisher Date | 2012-02-01 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Spectroscopy Discipline Chemistry Techniques Fatty Acids, Unsaturated Chemistry Lipid Peroxides Spectrometry, Mass, Electrospray Ionization Methods Tandem Mass Spectrometry Lipid Peroxidation Phenols Sulfoxides Xylenes Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Medicine |
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