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Classification of olive oils according to sensory defects using a potentiometric electronic tongue

2017Conference paper Restricted access
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dc.contributor.authorSilva, Lucas M.
dc.contributor.authorDias, L.G.
dc.contributor.authorRodrigues, Nuno
dc.contributor.authorVeloso, Ana C.A.
dc.contributor.authorRebello, Ligia P.G.
dc.contributor.authorPereira, J.A.
dc.contributor.authorPeres, António M.
dc.date.accessioned2020-02-27T16:29:48Z
dc.date.available2020-02-27T16:29:48Z
dc.date.issued2017
dc.description.abstractOlive oil is a highly appreciated food product being very prone to frauds. Olive oils may be graded as extra-virgin, virgin or lampante. This classification is attributed according to legal requirements, including chemical parameters and sensorial analysis. Among the organoleptic sensations, the capability of perceiving the presence or absence of sensory defects plays a key role for olive oils grade classification. This task is time-consuming and quite expensive, requiring the use of an official taste panel, which can only evaluate a low number of samples per day. In this work, an electronic tongue is proposed to discriminate olive oils according to the defect predominantly perceived (winey-vinegary, wet-wood, rancid and fusty/muddy sediment), by a trained sensory panel. Sub-sets of potentiometric signal profiles obtained from the lipid sensor membranes of the taste electrochemical device were selected using a simulated annealing meta-heuristic algorithm, allowing establishing classification linear discriminant model, which showed a predictive success classification rate of 81% for leave-one-out or cross-validation procedure. The satisfactory predictive performance achieved pointed out the practical potential of using this artificial taste sensor as a complementary methodology for olive oil sensory analysis.pt_PT
dc.description.sponsorshipThis work was financially supported by Project POCI- 01–0145-FEDER-006984 – Associate Laboratory LSRE-LCM and by Project UID/QUI/00616/2013 – CQ-VR both funded by FEDER - Fundo Europeu de Desenvolvimento Regional through COMPETE2020 - Programa Operacional Competitividade e Internacionalização (POCI) – and by national funds through FCT - Fundac ão para a Cie ncia e a Tecnologia, Portugal. Strategic funding of UID/BIO/04469/2013 unit is also acknowledged. Nuno Rodrigues thanks FCT, POPH-QREN and FSE for the Ph.D. Grant (SFRH/BD/104038/2014).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSilva, Lucas M.; Dias, L.G.; Rodrigues, Nuno; Veloso, Ana C.A.; Rebello, Ligia P.G.; Pereira, J.A.; Peres, António M. (2017). Classification of olive oils according to sensory defects using a potentiometric electronic tongue. In XVIII Simposio Científico-Técnico de Expoliva 2017. Jaén. p. 1-4. ISBN 978-84-946839-1-6pt_PT
dc.identifier.isbn978-84-946839-1-6
dc.identifier.urihttp://hdl.handle.net/10198/20743
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectOlive oilpt_PT
dc.subjectSensory analysispt_PT
dc.subjectSensory defectspt_PT
dc.subjectPotentiometric electronic tonguept_PT
dc.subjectChemometricspt_PT
dc.titleClassification of olive oils according to sensory defects using a potentiometric electronic tonguept_PT
dc.typeconference paper
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FBIO%2F04469%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00616%2F2013/PT
oaire.citation.conferencePlaceJaén, Espanhapt_PT
oaire.citation.titleExpoliva- XVIII Simposium Cinetífico-Técnicopt_PT
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNameDias
person.familyNameRodrigues
person.familyNamePereira
person.familyNamePeres
person.givenNameLuís G.
person.givenNameNuno
person.givenNameJosé Alberto
person.givenNameAntónio M.
person.identifier107333
person.identifier.ciencia-id2F11-9092-FAAF
person.identifier.ciencia-idF41D-B424-5F78
person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.ciencia-idCF16-5443-F420
person.identifier.orcid0000-0002-1210-4259
person.identifier.orcid0000-0002-9305-0976
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-id23569169900
person.identifier.scopus-author-id55258560600
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.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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