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Free radical mediated oxidative degradation of carotenes and xanthophylls

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dc.contributor.authorMordi, Raphael C.
dc.contributor.authorAdemosun, Olabisi T.
dc.contributor.authorAjanaku, Christiana O.
dc.contributor.authorOlanrewaju, Ifedolapo O.
dc.contributor.authorWalton, John C.
dc.date.accessioned2020-03-05T13:30:02Z
dc.date.available2020-03-05T13:30:02Z
dc.date.issued2020-02-26
dc.identifier.citationMordi , R C , Ademosun , O T , Ajanaku , C O , Olanrewaju , I O & Walton , J C 2020 , ' Free radical mediated oxidative degradation of carotenes and xanthophylls ' , Molecules , vol. 25 , no. 5 , 1038 . https://doi.org/10.3390/molecules25051038en
dc.identifier.issn1420-3049
dc.identifier.otherPURE: 266739596
dc.identifier.otherPURE UUID: 03f95d8e-6b5c-44dc-840d-a35d32cc4364
dc.identifier.otherBibtex: molecules25051038
dc.identifier.otherScopus: 85081075756
dc.identifier.otherWOS: 000529219900021
dc.identifier.urihttps://hdl.handle.net/10023/19603
dc.description.abstractThis article reviews the excited-state quenching, pro-vitamin A activity and anticarcinogenicity of carotenes and xanthophylls in relation to their chemical structures. Excited-state quenching improved with the length of the conjugated chain structure. Pro-vitamin A activity was dependent on the presence of at least one beta-ionyl ring structure. The effectiveness of carotenoids as antioxidants depended on their ability to trap peroxyl radicals with production of resonance-stabilized carotenyl radicals. The products identified from oxidations of carotenes and xanthophylls with molecular oxygen and other oxidizing agents are presented. The free radical-mediated mechanisms that have been proposed to account for the different classes of products are reviewed.
dc.format.extent13
dc.language.isoeng
dc.relation.ispartofMoleculesen
dc.rightsCopyright © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).en
dc.subjectFree radicalsen
dc.subjectCarotenoidsen
dc.subjectXanthophyllsen
dc.subjectOxidationen
dc.subjectβ-caroteneen
dc.subjectCanthaxanthinen
dc.subjectβ-iononeen
dc.subjectRetinalen
dc.subjectApo-carotenoidsen
dc.subjectQD Chemistryen
dc.subject.lccQDen
dc.titleFree radical mediated oxidative degradation of carotenes and xanthophyllsen
dc.typeJournal itemen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doihttps://doi.org/10.3390/molecules25051038
dc.description.statusPeer revieweden


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