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Geographical discrimination of olive oils from Cv. 'Galega Vulgar'

2023Journal article Open access
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dc.contributor.authorRodrigues, Nuno
dc.contributor.authorPeres, Fátima
dc.contributor.authorCasal, Susana
dc.contributor.authorSantamaria-Echart, Arantzazu
dc.contributor.authorBarreiro, M.F.
dc.contributor.authorPeres, António M.
dc.contributor.authorPereira, J.A.
dc.date.accessioned2021-01-05T16:00:48Z
dc.date.available2021-01-05T16:00:48Z
dc.date.issued2023
dc.description.abstractOlive oils from seven Portuguese regions were selected to study the effect of the geographical origin on the oils' composition. Quality parameters, fatty acids, tocopherols, hydroxytyrosol and tyrosol derivatives, and oxidative stability were evaluated. All olive oils could be classified as extra virgin, and the geographical origin significantly affected the oils chemical composition. Principal component analysis further confirmed the significant impact of the geographical origin on the composition and, indirectly, on stability of the oils, showing that the evaluated parameters could be used as markers for geographical origin identification. Alternatively, Fourier transform infrared spectroscopy was applied, allowing to establish a linear discriminant model that correctly identified the geographical origin of the olive oils with a mean sensitivity of 99 +/- 3 % (internal validation), confirming the impact of the oil origin on its characteristics. This finding allowed foreseeing the future application of the spectroscopy approach as a green, fast and non-invasive authentication tool.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRodrigues, Nuno; Peres, Fátima; Casal, Susana; Santamaria-Echart, Arantzazu; Barreiro, M.F.; Peres, António M.; Pereira, Jose Alberto (2023). Geographical discrimination of olive oils from Cv. 'Galega Vulgar'. Food Chemistry. eISSN 1873-7072. 398, p. 1-7pt_PT
dc.identifier.doi10.1016/j.foodchem.2022.133945
dc.identifier.eissn1873-7072
dc.identifier.issn0308-8146
dc.identifier.urihttp://hdl.handle.net/10198/23034
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectFatty acidspt_PT
dc.subjectHydroxytyrosolpt_PT
dc.subjectTocopherolspt_PT
dc.subjectOxidative stabilitypt_PT
dc.subjectFTIRpt_PT
dc.subjectLinear Discriminant Analysis
dc.titleGeographical discrimination of olive oils from Cv. 'Galega Vulgar'pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleFood Chemistrypt_PT
person.familyNameRodrigues
person.familyNameSantamaria-Echart
person.familyNameBarreiro
person.familyNamePeres
person.familyNamePereira
person.givenNameNuno
person.givenNameArantzazu
person.givenNameFilomena
person.givenNameAntónio M.
person.givenNameJosé Alberto
person.identifier107333
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person.identifier.orcid0000-0002-6844-333X
person.identifier.orcid0000-0001-6595-9165
person.identifier.orcid0000-0002-2260-0600
person.identifier.ridL-9802-2014
person.identifier.ridI-8470-2012
person.identifier.ridL-6798-2014
person.identifier.scopus-author-id55258560600
person.identifier.scopus-author-id56725697700
person.identifier.scopus-author-id57188719717
person.identifier.scopus-author-id7102331969
person.identifier.scopus-author-id57204366348
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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