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Classification of single-cultivar Tunisian olive oils according to the geographical origin using an electronic tongue

2017Conference object Open access
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dc.contributor.authorSouayah, Fatma
dc.contributor.authorRodrigues, Nuno
dc.contributor.authorVeloso, Ana C.A.
dc.contributor.authorDias, L.G.
dc.contributor.authorOueslati, Souheib
dc.contributor.authorPereira, J.A.
dc.contributor.authorPeres, António M.
dc.date.accessioned2020-02-27T16:00:57Z
dc.date.available2020-02-27T16:00:57Z
dc.date.issued2017
dc.description.abstractThe marketing of olive oil is focused to a greater extend on the distinction and characterization of products according to their geographical origins. Due to the great impact of geographic, agronomic and technological factors on the physicochemical quality of olive oils, it is important to be able to discriminate them according to their geographical origins in order to avoid or minimize the risk of frauds. In this work, it was intended to verify the capability of an electronic tongue to classify monovarietal Tunisian olive oils (cvs Chemlali or Sahli) according to geographical origins (i.e. Tunisian districts). For this purpose, chemometric tools were applied in order to establish linear discriminant models based on selected sub-sets of potentiometric signals profiles gathered with the electronic tongue. In this research, 30 samples belonging to the two above-mentioned varieties were analyzed by the electronic tongue additionally to legally required physicochemical analysis, which included the free acidity, the peroxide value and the coefficients of extinction K232, K270 and t::.K. These olive oil samples were grouped according to 3 regions for the Chemlali variety (i.e. Kairouan, Sidi Bouzid and Sfax- Center Tunisia) and 3 regions as well for the Sahli variety (i.e. Mahdia, Sousse and Kairouan - North and Center Tunisia). Preliminary results showed that it was possible to classify Tunisian olive oisl according to the geographical region with a minimum correct classification rate of 94% for cross-validation procedure. These findings pointed out the potential use of the electronic tongue as an efficient and low-cost analytical technique for classifying the Tunisian autochthonous monovarietal olive oils according to their geographical origin.pt_PT
dc.description.sponsorshipThis work was financially supported by Project POCI-01-0145-FEDER-006984 - Associate Laboratory LSRE-LCM, Project UID/QUI/00616/2013 - CQ-VR, Project UID/BI0/04469/2013 - CEB and Project UID/AGR/00690/2013- CIMO all funded by FEDER- Fundo Europeu de Desenvolvimento Regional through COMPETE2020- Programa Operacional Competitividade e lnternacionaliza~ao (POCI)and by national funds through FCT- Fundação para a Ciência e a Tecnologia, Portugal. Nuno Rodrigues thanks FCT, POPH-QREN and FSE for the Ph.D. Grant SFRH/BD/104038/2014. Souheib Oueslati is grateful for the support of the Tunisian Ministry of Agriculture.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSouayah, Fatma; Rodrigues, Nuno; Veloso, Ana C.A.; Dias, L.G.; Oueslati, Souheib; Pereira, J.A.; Peres, António M. (2017). Classification of single-cultivar Tunisian olive oils according to the geographical origin using an electronic tongue. In VIII Congresso Ibérico de Ciências Hortícolas. Coimbra. ISBN 978-972-8936-27-3pt_PT
dc.identifier.isbn978-972-8936-27-3
dc.identifier.urihttp://hdl.handle.net/10198/20740
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAssociação Portuguesa de Horticulturapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectMonovarietal olive oilspt_PT
dc.subjectElectrochemical taste sensorpt_PT
dc.subjectAutochthonous Tunisian cultivarspt_PT
dc.subjectLinear discriminant analysispt_PT
dc.subjectMeta-heuristic variable selection algorithmpt_PT
dc.titleClassification of single-cultivar Tunisian olive oils according to the geographical origin using an electronic tonguept_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00616%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FBIO%2F04469%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FAGR%2F00690%2F2013/PT
oaire.citation.conferencePlaceCoimbra, Portugalpt_PT
oaire.citation.titleVIII Congresso Ibérico de Ciências Hortícolaspt_PT
oaire.fundingStream5876
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNameRodrigues
person.familyNameDias
person.familyNamePereira
person.familyNamePeres
person.givenNameNuno
person.givenNameLuís G.
person.givenNameJosé Alberto
person.givenNameAntónio M.
person.identifier107333
person.identifier.ciencia-idF41D-B424-5F78
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person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.ciencia-idCF16-5443-F420
person.identifier.orcid0000-0002-9305-0976
person.identifier.orcid0000-0002-1210-4259
person.identifier.orcid0000-0002-2260-0600
person.identifier.orcid0000-0001-6595-9165
person.identifier.ridL-6798-2014
person.identifier.ridI-8470-2012
person.identifier.scopus-author-id55258560600
person.identifier.scopus-author-id23569169900
person.identifier.scopus-author-id57204366348
person.identifier.scopus-author-id7102331969
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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