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Insight into the sensing mechanism of an impedance based electronic tongue for honey botanic origin discrimination

2019Journal article Open access
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dc.contributor.authorElamine, Youssef
dc.contributor.authorInácio, Pedro M.C.
dc.contributor.authorLyoussi, Badiâa
dc.contributor.authorAnjos, O.
dc.contributor.authorEstevinho, Letícia M.
dc.contributor.authorMiguel, Maria Graça
dc.contributor.authorGomes, Henrique L.
dc.date.accessioned2019-03-28T16:24:07Z
dc.date.available2019-03-28T16:24:07Z
dc.date.issued2019
dc.descriptionSó está disponível o resumo.pt_PT
dc.description.abstractAn impedance based electronic tongue was developed and used to discriminate honey of different botanic origin. The e-tongue presented here is based on the small-signal frequency response of the electrical double-layer established between the honey solution and an array of four different sensing units composed by gold, carbon, indium-tin-oxide, and doped silicon. The ability of the e-tongue to discriminate honey of different floral origins was demonstrated by distinguishing honey from Bupleurum and Lavandula pollen prevalence. The honey fingerprint obtained with the e-tongue was validated by parallel melissopalenogical analysis and physico-chemical methods. It is demonstrated that the e-tongue is very sensitive to changes on the honey electrical conductivity. Small differences in electrical conductivity are introduced by the presence of ionisable organic acids and mineral salts. Moreover, we propose that the sensitivity of the tongue to changes in electrical conductivity can be explored to probe other complex liquid substances.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.snb.2019.01.023pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.11/6427
dc.language.isoengpt_PT
dc.subjectElectronic tongue; Small signal impedance; Electrical-double-layer; Honeypt_PT
dc.titleInsight into the sensing mechanism of an impedance based electronic tongue for honey botanic origin discriminationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage33pt_PT
oaire.citation.startPage24pt_PT
oaire.citation.titleSensors and Actuatorspt_PT
oaire.citation.volume285pt_PT
person.familyNameAnjos
person.familyNameRibeiro
person.givenNameOfélia
person.givenNameMaria Margarida
person.identifier349097
person.identifier.ciencia-idC21D-D8C7-3037
person.identifier.ciencia-idAD12-4D32-7A48
person.identifier.orcid0000-0003-0267-3252
person.identifier.orcid0000-0003-4684-1262
person.identifier.ridG-2808-2012
person.identifier.ridM-4235-2013
person.identifier.scopus-author-id23395659700
person.identifier.scopus-author-id7201715611
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationdf9191ae-0bbb-4bb8-bbdc-0f79c7365876
relation.isAuthorOfPublicationf5b33ec3-9c90-4cc9-b0c4-c86c7ec0b017
relation.isAuthorOfPublication.latestForDiscoverydf9191ae-0bbb-4bb8-bbdc-0f79c7365876

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