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Characterization of new phenolic derivatives in Portuguese propolis by electrospray mass spectroscopy

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dc.contributor.authorFalcão, Soraia
dc.contributor.authorVilas-Boas, Miguel
dc.contributor.authorFreire, Cristina
dc.contributor.authorDomingues, Maria R.M.
dc.contributor.authorCardoso, Susana M.
dc.date.accessioned2011-06-20T10:58:20Z
dc.date.available2011-06-20T10:58:20Z
dc.date.issued2009
dc.description.abstractThis research outlines an extensive characterization of the phenolic composition of a propolis sample from the northeast of Porto gal. For that, ao ethanolic extract was prepared, fractionated by HPLC and the identification of the phenolic compounds was done by electro spray mass spectrometry in the negative mode. This technical approach allowed the identification of 37 phenolic compounds in the Portoguese propolis sample, including seven that were described for the first time. Two of these new compounds had [M-Hr ions at mlz 403, aod the others had [M-Hr ions at mlz 433, mlz 461, mlz 417, mlz 475, and mlz 565. In general, the molecular weight of these compounds was higher thao the common phenolic compounds of propolis aod their fragmentation pattern suggested that they belong to the flavonoid family probably lioked with a phenylpropanoic acid moiety in the position C5 (mlz 403, 433, 461, 475) and C3 (mlz 403, 417), corresponding to pinocembrio and pinobaoksin derivatives. The ion at mlz 565 seems to be a p-counlaric ester derivative dimer.por
dc.identifier.citationFalcão, S.; Vilas-Boas, Miguel; Freire, C.; Domingues, M.R.M.; Cardoso, S.M. (2009). Characterization of new phenolic derivatives in Portuguese propolis by electrospray mass spectroscopy. In EuroFoodChem XV - Food for the Future - Proceeding 2. Copenhaga. p. 64-67por
dc.identifier.urihttp://hdl.handle.net/10198/5265
dc.language.isoengpor
dc.peerreviewedyes
dc.relationAUTENTICAÇÃO GEOGRÁFICA DO MEL E PROPOLIS PORTUGUÊS PELA CARACTERIZAÇÃO QUÍMICA DO PERFIL FENÓLICO. POTENCIALIDADES ANTIOXIDANTES
dc.subjectPropolispor
dc.subjectPhenolic compoundspor
dc.subjectMass spectrometrypor
dc.subjectElectrospray ionizationpor
dc.titleCharacterization of new phenolic derivatives in Portuguese propolis by electrospray mass spectroscopypor
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleAUTENTICAÇÃO GEOGRÁFICA DO MEL E PROPOLIS PORTUGUÊS PELA CARACTERIZAÇÃO QUÍMICA DO PERFIL FENÓLICO. POTENCIALIDADES ANTIOXIDANTES
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F44855%2F2008/PT
oaire.citation.conferencePlaceCopenhaga, Dinamarcapor
oaire.citation.endPage67por
oaire.citation.issue2por
oaire.citation.startPage64por
oaire.citation.titleEuroFoodChem XV - Food for the Future - Proceeding 2por
person.familyNameFalcão
person.familyNameVilas-Boas
person.givenNameSoraia
person.givenNameMiguel
person.identifier711432
person.identifier1693134
person.identifier.ciencia-idD41A-6BED-4CBB
person.identifier.ciencia-idA918-C6FF-81A4
person.identifier.orcid0000-0003-3735-6951
person.identifier.orcid0000-0002-8665-5280
person.identifier.ridI-5949-2013
person.identifier.scopus-author-id14832459200
person.identifier.scopus-author-id6602648497
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublication5746ab3e-8ffe-4e26-9a41-8392cf031f28
relation.isAuthorOfPublicationf58280c8-298b-4e4c-9f7c-4517300d3382
relation.isAuthorOfPublication.latestForDiscoveryf58280c8-298b-4e4c-9f7c-4517300d3382
relation.isProjectOfPublication115988c0-110c-4100-86e6-9c03d7478255
relation.isProjectOfPublication.latestForDiscovery115988c0-110c-4100-86e6-9c03d7478255

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