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A flow-based platform for measuring the acidity parameters in wine

2017Journal article Restricted access
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dc.contributor.authorVidigal, Susana S. M. P.
dc.contributor.authorRangel, António O. S. S.
dc.date.accessioned2017-07-31T14:53:05Z
dc.date.available2017-07-31T14:53:05Z
dc.date.issued2017
dc.description.abstractThe present work describes a valuable tool for winemaking industry to measure the acidity parameters with rapid response, simple sample handling, with no or minimal pre-treatment. Thus, a sequential injection analysis (SIA) system with spectrophotometric detection was used as platform for the development of methodologies for the quantification of volatile and total acidity in wine samples. Both procedures make use of the same colour reagent, bromothymol blue (BTB) that changes its intrinsic colour in the presence of the acidity compounds. The volatile acidity value was attained with the separation of the volatile fraction of acids by means of a membrane separation technique, a gas-diffusion unit. For the total acidity value, the sample was merged with the colour reagent on the way towards detection. The fixed acidity is a result of the difference from the total and the volatile acidity. The presented tool displayed a low sample and reagent consumption, 346 and 102 µL of sample and 37 and 32 µg of BTB, for the volatile acidity (VA) and for the total acidity (TA), respectively. The observed limits of detection and quantification were 0.03 and 0.01 g L−1 (VA) and 0.09 and 0.02 g L−1 (TA) with high determination rates, 35 (VA) and 62 (TA) determinations per hour. The proposed system was successfully applied to the quantification of volatile, total and fixed acidity in white table wine samples. The obtained results were in good agreement with the ones obtained by the reference methods.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVidigal, S. S. M. P., & Rangel, A. O. S. S. (2017). A flow-based platform for measuring the acidity parameters in wine. Talanta, 168, 313–319. https://doi.org/10.1016/j.talanta.2017.03.029pt_PT
dc.identifier.doi10.1016/j.talanta.2017.03.029pt_PT
dc.identifier.eid85015321490
dc.identifier.eissn1873-3573
dc.identifier.issn0039-9140
dc.identifier.pmid28391861
dc.identifier.urihttp://hdl.handle.net/10400.14/22691
dc.identifier.wos000400719700044
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationNORTE-01-0145-FEDER-00003pt_PT
dc.subjectSequential injection analysis systempt_PT
dc.subjectSpectrophotometrypt_PT
dc.subjectGas-diffusion unitpt_PT
dc.subjectBromothymol bluept_PT
dc.subjectTable white winept_PT
dc.titleA flow-based platform for measuring the acidity parameters in winept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F78705%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F50016%2F2013/PT
oaire.citation.endPage319pt_PT
oaire.citation.startPage313pt_PT
oaire.citation.titleTalantapt_PT
oaire.citation.volume168pt_PT
oaire.fundingStreamSFRH
oaire.fundingStream5876
person.familyNameVidigal
person.familyNameSantos Silva Rangel
person.givenNameSusana
person.givenNameAntónio Osmaro
person.identifier.ciencia-id2919-B77C-11C0
person.identifier.ciencia-idD61D-7CFB-178A
person.identifier.orcid0000-0002-0213-063X
person.identifier.orcid0000-0002-6486-8947
person.identifier.ridM-4661-2013
person.identifier.scopus-author-id11739488200
person.identifier.scopus-author-id7004827387
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
relation.isAuthorOfPublication59453cc2-ee50-4a1d-bbfc-924ca6417004
relation.isAuthorOfPublication467be022-fd9c-4549-aa48-48ebcc1098eb
relation.isAuthorOfPublication.latestForDiscovery59453cc2-ee50-4a1d-bbfc-924ca6417004
relation.isProjectOfPublication6f2f1bdc-134c-49e2-bdc8-b249ab6090b7
relation.isProjectOfPublication3fe5970e-de39-42f7-a29d-18521b591a09
relation.isProjectOfPublication.latestForDiscovery3fe5970e-de39-42f7-a29d-18521b591a09

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