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Monitoring olive oils quality and oxidative resistance during storage using an electronic tongue

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dc.contributor.authorRodrigues, Nuno
dc.contributor.authorDias, L.G.
dc.contributor.authorVeloso, Ana C.A.
dc.contributor.authorPereira, J.A.
dc.contributor.authorPeres, António M.
dc.date.accessioned2016-12-21T10:18:33Z
dc.date.available2016-12-21T10:18:33Z
dc.date.issued2016
dc.description.abstractMonitoring olive oils oxidative stability and quality parameters (free acidity, peroxide values, K232 and K270 extinction coefficients) is needed to guarantee that, during storage, their levels remain within the legal thresholds enabling their commercialization as high-value extra-virgin olive oils. Physicochemical levels are assessed using time-consuming routine analytical reference techniques. In this work, the feasibility of a novel approach that merges an electronic tongue and chemometric tools, for monitoring extra-virgin olive oils’ quality along one year of storage at dark or exposed to light is discussed. The results confirmed that physicochemical parameters varied with the storage lighting conditions and more significantly with time. Also, multiple linear regression models, using sub-sets of 22e28 sensors selected with a meta-heuristic simulated annealing algorithm, allow evaluating the storage time-evolution of olive oils’ peroxide values, extinction coefficients and oxidative stabilities with satisfactory accuracy (R2 0.98 and 0.96, for leave-one-out and repeated K-fold cross-validation procedures, respectively). The capability of monitoring, in a single electrochemical assay, legal required quality parameters of olive oils, decreases considerable the analysis time and cost, allowing checking the compliance of extra-virgin olive oil quality with labeling. So, the use of electronic tongues for extra-virgin olive oil shelf-life assessment could be envisaged.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRodrigues, Nuno; Dias, L.G.; Veloso, Ana C.A.; Pereira, J.A.; Peres, António M. (2016). Monitoring olive oils quality and oxidative resistance during storage using an electronic tongue. LWT - Food Science and Technology. ISSN 0023-6438. 73, p. 683-692pt_PT
dc.identifier.doi10.1016/j.lwt.2016.07.002pt_PT
dc.identifier.issn0023-6438
dc.identifier.urihttp://hdl.handle.net/10198/13632
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationCharacterization of wild and ancient olive trees for its valorization”
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectOlive oilspt_PT
dc.subjectPhysicochemical quality parameterspt_PT
dc.subjectElectronic tonguept_PT
dc.subjectMultiple linear regressionpt_PT
dc.subjectSimulated annealing algorithmpt_PT
dc.titleMonitoring olive oils quality and oxidative resistance during storage using an electronic tonguept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCharacterization of wild and ancient olive trees for its valorization”
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F104038%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FBIO%2F04469%2F2013/PT
oaire.citation.endPage692pt_PT
oaire.citation.startPage683pt_PT
oaire.citation.titleLWT - Food Science and Technologypt_PT
oaire.citation.volume73pt_PT
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
person.identifier.ciencia-id2F11-9092-FAAF
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.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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