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Phenolic profile in the quality control of walnut (Juglans regia L.) leaves

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dc.contributor.authorAmaral, Joana S.
dc.contributor.authorSeabra, Rosa M.
dc.contributor.authorAndrade, Paula B.
dc.contributor.authorValentão, Patrícia
dc.contributor.authorPereira, J.A.
dc.contributor.authorFerreres, Frederico
dc.date.accessioned2008-05-28T10:00:27Z
dc.date.available2008-05-28T10:00:27Z
dc.date.issued2004
dc.description.abstractQualitative and quantitative determinations of phenolic compounds were carried out on walnut leaves samples from six different cultivars, with the same agricultural, geographical and climatic conditions. The evolution of major phenolic compounds amounts was monitored from May to September. Two extractive procedures were assayed and best results were obtained using acidified water and a solid phase extraction column purification step. Qualitative analysis was performed by HPLC-DAD/MS and, in all samples, seven phenolic compounds were identified (3-caffeoylquinic, 3-p-coumaroylquinic and 4-p-coumaroylquinic acids, quercetin 3-galactoside, quercetin 3-arabinoside, quercetin 3-xyloside, quercetin 3-rhamnoside) and two other partially identified phenolics (quercetin 3-pentoside and kaempferol 3-pentoside derivatives) were also detected. Quantification of phenolic compounds was performed by HPLC-DAD, which revealed that quercetin 3-galactoside was always the major compound while 4-p-coumaroylquinic acid was the minor one. The highest content of phenolics was found in May and July.en
dc.identifier.citationAmaral, J.S.; Seabra, R.M.; Andrade, P.B.; Valentão, P.; Pereira, J.A.; Ferreres, F. (2004). Phenolic profile in the quality control of walnut (Juglans regia L.)leaves. Food Chemistry. ISSN 0308-8146. 88:3, p. 373-379en
dc.identifier.doi10.1016/j.foodchem.2004.01.055
dc.identifier.issn0308-8146en
dc.identifier.slugFood Chemistryen
dc.identifier.urihttp://hdl.handle.net/10198/629
dc.language.isoengen
dc.language.rfc3066engen
dc.number3en
dc.pagination373-379en
dc.peerreviewedyesen
dc.publisherElsevieren
dc.subjectJuglans regia L.en
dc.subjectWalnut leafen
dc.subjectPhenolic compoundsen
dc.subjectHPLC-DAD
dc.subjectHPLC-DAD/MS-ESI
dc.titlePhenolic profile in the quality control of walnut (Juglans regia L.) leavesen
dc.typejournal article
dc.volume88en
dspace.entity.typePublication
person.familyNameAmaral
person.familyNamePereira
person.givenNameJoana S.
person.givenNameJosé Alberto
person.identifier.ciencia-id5319-7DE8-BEDA
person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.orcid0000-0002-3648-7303
person.identifier.orcid0000-0002-2260-0600
person.identifier.ridL-6798-2014
person.identifier.scopus-author-id57204366348
rcaap.rightsopenAccessen
rcaap.typearticle
relation.isAuthorOfPublication42be2cf4-adc4-4e7f-ac60-7aab515b38cd
relation.isAuthorOfPublication7932162e-a2da-4913-b00d-17babbe51857
relation.isAuthorOfPublication.latestForDiscovery7932162e-a2da-4913-b00d-17babbe51857

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