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Performance study of a potentiometric sensor array for lactic proteins analysis

2012Conference paper Open access
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dc.contributor.authorDias, L.G.
dc.contributor.authorVeloso, Ana C.A.
dc.contributor.authorMachado, Adélio A.S.C.
dc.contributor.authorPeres, António M.
dc.date.accessioned2014-08-27T10:46:39Z
dc.date.available2014-08-27T10:46:39Z
dc.date.issued2012
dc.description.abstractLactic proteins are complex biomolecules, possessing different molecular weights (from 19 kDa up to 66 kDa), which can be used as biomarkers for detecting food adulterations. This study reports for the first time the evaluation of two potentiometric sensor arrays, one electronic tongue (ET) using only cross-sensitivity chemical sensors and a hybrid-ET containing ionic-selective and cross-sensitivity chemical sensors. Although both devices could detect and distinguish soluble and insoluble lactic proteins, namely bovine serum albumin and three main casein fractions (alpha-, beta- and kappa-), the inclusion of ionic-selective sensors increased the device performance (100% of correct leave-oneout cross-validation classification for hybrid-ET against 94% for the ET) and reduced the number of sensors needed (5 for the hybrid-ET instead of 9 sensors used by the ET device). Finally, the results showed that with the hybrid-ET a second-order polynomial equation could be derived relating the measured potential of the aqueous solution and the logarithmic of the total casein concentration, with satisfactory determination coefficients (R2>0.99).por
dc.identifier.citationDias, L.G.; Veloso, Ana C.A.; Machado, A.A.S.C.; Peres, António M. (2012). Performance study of a potentiometric sensor array for lactic proteins analysis. In 14th International Meeting on Chemical Sensors (IMCS2012). Nuremberg. p. 1332-1335. ISBN 978-3-9813484-2-2por
dc.identifier.doi10.5162/IMCS2012/P2.1.2.
dc.identifier.isbn978-3-9813484-2-2
dc.identifier.urihttp://hdl.handle.net/10198/10210
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherAMA Service GmbHpor
dc.relationStrategic Project - LA 20 - 2011-2012
dc.subjectPotentiometric sensor arraypor
dc.subjectCross-sensitivity chemical sensorspor
dc.subjectIonic-selective chemical sensorspor
dc.subjectLactic proteinspor
dc.titlePerformance study of a potentiometric sensor array for lactic proteins analysispor
dc.typeconference paper
dspace.entity.typePublication
oaire.awardTitleStrategic Project - LA 20 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6820 - DCRRNI ID/PEst-C%2FEQB%2FLA0020%2F2011/PT
oaire.citation.conferencePlaceNuremberg, Alemanhapor
oaire.citation.endPage1335por
oaire.citation.startPage1332por
oaire.citation.title14th International Meeting on Chemical Sensors (IMCS2012)por
oaire.fundingStream6820 - DCRRNI ID
person.familyNameDias
person.familyNamePeres
person.givenNameLuís G.
person.givenNameAntónio M.
person.identifier107333
person.identifier.ciencia-id2F11-9092-FAAF
person.identifier.ciencia-idCF16-5443-F420
person.identifier.orcid0000-0002-1210-4259
person.identifier.orcid0000-0001-6595-9165
person.identifier.ridI-8470-2012
person.identifier.scopus-author-id23569169900
person.identifier.scopus-author-id7102331969
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
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relation.isAuthorOfPublication7d93be47-8dc4-4413-9304-5b978773d3bb
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