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Free amino acids of Tronchuda Cabbage (Brassica oleracea L. Var. costata DC): influence of leaf position (internal or external) and collection time

2008Journal article Restricted access
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dc.contributor.authorOliveira, Andreia P.
dc.contributor.authorPereira, David M.
dc.contributor.authorAndrade, Paula B.
dc.contributor.authorValentão, Patrícia
dc.contributor.authorSousa, Carla
dc.contributor.authorPereira, J.A.
dc.contributor.authorBento, Albino
dc.contributor.authorRodrigues, M.A.
dc.contributor.authorSeabra, Rosa M.
dc.contributor.authorSilva, Branca M.
dc.date.accessioned2008-09-02T16:04:31Z
dc.date.available2008-09-02T16:04:31Z
dc.date.issued2008
dc.description.abstractThe free amino acid profile of 18 samples of tronchuda cabbage (Brassica oleracea L. var. costata DC) leaves, harvested at three different months, was determined by HPLC/UV−vis. The tronchuda cabbage leaves total free amino acid content varied from 3.3 to 14.4 g/kg fresh weight. Generally, arginine was the major compound, followed by proline, threonine, glutamine, cysteine, and glutamic acid. This study indicates that free amino acids are not similarly distributed: in external leaves, proline and arginine were the major free amino acids, while in internal ones, arginine was the main free amino acid, followed by threonine, glutamine, and cysteine. Significant differences were observed for valine, proline, arginine, leucine, cysteine, lysine, histidine, and tyrosine contents. The levels of some free amino acids were significantly affected by the collection period. In external leaves, this occurred with glutamic acid, serine, valine, leucine, cysteine, and ornithine contents, while in internal leaves, it occurred with aspartic acid, arginine, and total contents.en
dc.identifier.citationOliveira, Andreia P.; Pereira, D.M.; Andrade, P.B.; Valentão, P.; Sousa, C.; Pereira, J.A.; Bento, Albino; Rodrigues, M.A.; Seabra, R.M.; Silva, B.M. (2008). Free amino acids of Tronchuda Cabbage (Brassica oleracea L. Var. costata DC): influence of leaf position (internal or external) and collection time. Journal of Agricultural and Food Chemistry. ISSN 0021-8561. 56:13, p. 5216-5221en
dc.identifier.doi10.1021/jf800563w
dc.identifier.issn0021-8561
dc.identifier.urihttp://hdl.handle.net/10198/716
dc.language.isoengen
dc.peerreviewedyes
dc.publisherACSen
dc.subjectBrassica oleracea L. var. costata DCen
dc.subjectTronchuda cabbageen
dc.subjectInternal and external leavesen
dc.subjectFree amino acidsen
dc.titleFree amino acids of Tronchuda Cabbage (Brassica oleracea L. Var. costata DC): influence of leaf position (internal or external) and collection timeen
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleJournal of Agricultural and Food Chemistry
person.familyNamePereira
person.familyNameBento
person.familyNameRodrigues
person.givenNameJosé Alberto
person.givenNameAlbino
person.givenNameManuel
person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.ciencia-idD516-325A-9AD7
person.identifier.ciencia-id371D-DF0D-8D68
person.identifier.orcid0000-0002-2260-0600
person.identifier.orcid0000-0001-5215-785X
person.identifier.orcid0000-0002-5367-1129
person.identifier.ridL-6798-2014
person.identifier.ridN-9706-2016
person.identifier.ridO-1721-2016
person.identifier.scopus-author-id57204366348
person.identifier.scopus-author-id35247694000
person.identifier.scopus-author-id35270106800
rcaap.rightsrestrictedAccess
rcaap.typearticleen
relation.isAuthorOfPublication7932162e-a2da-4913-b00d-17babbe51857
relation.isAuthorOfPublication233115be-9d46-49d0-8b7d-2d64406d64a0
relation.isAuthorOfPublication43621353-fa11-4559-9b24-27eba5ad3de0
relation.isAuthorOfPublication.latestForDiscovery7932162e-a2da-4913-b00d-17babbe51857

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