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Classification PDO olive oils on the basis of their sterol composition by multivariate analysis

2005Journal article Open access
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dc.contributor.authorAlves, M. Rui
dc.contributor.authorCunha, Sara C.
dc.contributor.authorAmaral, J.S.
dc.contributor.authorPereira, J.A.
dc.contributor.authorOliveira, Beatriz
dc.date.accessioned2008-09-03T11:28:23Z
dc.date.available2008-09-03T11:28:23Z
dc.date.issued2005
dc.description.abstractThe sterol compositions (GLC/FID/capillary column) of monovarietal olive oils (51 samples) from the most important cultivars of northeastern Portugal (Cvs. Cobranc¸osa, Madural and Verdeal Transmontana) and 27 commercial samples of olive oils with protected denomination of origin (PDO) from the same region and cultivars were evaluated. Δ-sitosterol, Δ5-avenasterol and campesterol were the most representative sterols. Cholesterol, stigmasterol, clerosterol and Δ7-stigmastenol were also found in all samples. All studied samples respected EC Regulation N. 2568, and in all cases total sterols were remarkably higher than the minimum limit set by legislation, ranging from 2003 to 2682 mg/kg. Results were analysed with the help of several statistical techniques, including reduction of dimensionality by principal component analysis with cross-validation of the number of components, followed by the use of canonical variate predictive biplots for model development and canonical variate interpolative biplots for approximate classification of monovarietal and PDO olive oils. These biplots proved to be a very interesting solution in the present case study, overcoming the problems of interpretation and classification that arise whenever different multivariate analyses are coupled together.en
dc.identifier.citationAlves, M.R.; Amaral, J.S.; Cunha, S.C.; Pereira, J.A.; Oliveira, M.B.P.P. (2005). Classification PDO olive oils on the basis of their sterol composition by multivariate analysis. Analytica Chimica Acta. ISSN 0003-2670. 549:1-2, p. 166-178.en
dc.identifier.doi10.1016/j.aca.2005.06.033
dc.identifier.issn0003-2670
dc.identifier.urihttp://hdl.handle.net/10198/732
dc.language.isoengen
dc.peerreviewedyes
dc.publisherElsevieren
dc.subjectSterolsen
dc.subjectOlive oilen
dc.subjectMultivariate analysisen
dc.subjectBiplotsen
dc.titleClassification PDO olive oils on the basis of their sterol composition by multivariate analysisen
dc.typejournal article
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.rightsopenAccess
rcaap.typearticleen
relation.isAuthorOfPublication42be2cf4-adc4-4e7f-ac60-7aab515b38cd
relation.isAuthorOfPublication7932162e-a2da-4913-b00d-17babbe51857
relation.isAuthorOfPublication.latestForDiscovery42be2cf4-adc4-4e7f-ac60-7aab515b38cd

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