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Study of quinones reactions with wine nucleophiles by cyclic voltammetry

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dc.contributor.authorOliveira, Carla. M.
dc.contributor.authorBarros, António S.
dc.contributor.authorFerreira, António César Silva
dc.contributor.authorSilva, Artur M. S.
dc.date.accessioned2017-10-10T16:30:04Z
dc.date.available2017-10-10T16:30:04Z
dc.date.issued2016
dc.description.abstractQuinones are electrophilic species which can react with various nucleophiles, like wine antioxidants, such as sulfur dioxide or ascorbic acid, thiols, amino acids, and numerous polyphenols. These reactions are very important in wine aging because they mediate oxygen reactions during both production and bottle aging phases. In this work, the major challenge was to determine the interaction between ortho-quinones and wine nucleophiles (amino acids, thiols, and the antioxidants SO2 and ascorbic acid), by cyclic voltammetry. Wine-model solutions with gallic acid, caffeic acid, or (+)-catechin and nucleophilic compounds were used. To understand the effect of nucleophilic addition in wine, a white wine with the same added nucleophiles was also analysed. Cyclic voltammograms were taken with glassy carbon electrode or screen-printed carbon electrodes, respectively, for wine-model and white wines solutions, in the absence and in the presence of nucleophiles. A nucleophilic order profile related to the cathodic current intensity decrease was observed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationOLIVEIRA, Carla. M.; BARROS, António S.; FERREIRA, António César Silva; SILVA, Artur M. S. - Study of quinones reactions with wine nucleophiles by cyclic voltammetry. Food Chemistry. ISSN 0308-8146. Vol. 211 (2016), p. 1-7pt_PT
dc.identifier.doi10.1016/j.foodchem.2016.05.020pt_PT
dc.identifier.eid84966762354
dc.identifier.issn0308-8146
dc.identifier.pmid27283600
dc.identifier.urihttp://hdl.handle.net/10400.14/22954
dc.identifier.wos000377543500001
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevier
dc.subjectOxidationpt_PT
dc.subjectQuinonespt_PT
dc.subjectThiolspt_PT
dc.subjectAmino acidspt_PT
dc.subjectAntioxidantspt_PT
dc.subjectWinept_PT
dc.subjectCyclic voltammetrypt_PT
dc.subjectPhenolicspt_PT
dc.titleStudy of quinones reactions with wine nucleophiles by cyclic voltammetrypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00062%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F64097%2F2009/PT
oaire.citation.titleFood Chemistrypt_PT
oaire.citation.volume211
oaire.fundingStream5876
oaire.fundingStreamSFRH
person.familyNameOliveira
person.familyNameBarros
person.familyNameSilva Ferreira
person.familyNameSilva
person.givenNameCarla
person.givenNameAntónio
person.givenNameAntonio Cesar
person.givenNameArtur
person.identifierR-000-200
person.identifier.ciencia-id521E-EE5E-AF0B
person.identifier.ciencia-id4714-1135-72CC
person.identifier.ciencia-id931A-48DA-23A8
person.identifier.ciencia-id3C16-EC9B-81D7
person.identifier.orcid0000-0002-3346-2629
person.identifier.orcid0000-0002-9103-5852
person.identifier.orcid0000-0002-1188-1021
person.identifier.orcid0000-0003-2861-8286
person.identifier.ridL-9222-2014
person.identifier.scopus-author-id56130256800
person.identifier.scopus-author-id7403222204
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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