Caracterização espectroscópica multivariada do potencial antioxidante de vinhos

Detalhes bibliográficos
Autor(a) principal: Gallice,Wellington César
Data de Publicação: 2011
Outros Autores: Messerschmidt,Iara, Peralta-Zamora,Patricio
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000300006
Resumo: In this work the antioxidant capacity of red wine samples was characterized by conventional spectroscopic and chromatographic methodologies, regarding chemical parameters like color, total polyphenolic and resveratrol content, and antioxidant activity. Additionally, multivariate calibration models were developed to predict the antioxidant activity, using partial least square regression and the spectral data registered between 400 and 800 nm. Even when a close correlation between the evaluated parameters has been expected many inconsistencies were observed, probably on account of the low selectivity of the conventional methodologies. Models developed from mean-centered spectra and using 4 latent variables allowed high prevision capacity of the antioxidant activity, permitting relative errors lower than 3%.
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spelling Caracterização espectroscópica multivariada do potencial antioxidante de vinhoswineantioxidant potentialmultivariate electronic spectroscopyIn this work the antioxidant capacity of red wine samples was characterized by conventional spectroscopic and chromatographic methodologies, regarding chemical parameters like color, total polyphenolic and resveratrol content, and antioxidant activity. Additionally, multivariate calibration models were developed to predict the antioxidant activity, using partial least square regression and the spectral data registered between 400 and 800 nm. Even when a close correlation between the evaluated parameters has been expected many inconsistencies were observed, probably on account of the low selectivity of the conventional methodologies. Models developed from mean-centered spectra and using 4 latent variables allowed high prevision capacity of the antioxidant activity, permitting relative errors lower than 3%.Sociedade Brasileira de Química2011-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000300006Química Nova v.34 n.3 2011reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422011000300006info:eu-repo/semantics/openAccessGallice,Wellington CésarMesserschmidt,IaraPeralta-Zamora,Patriciopor2011-04-12T00:00:00Zoai:scielo:S0100-40422011000300006Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2011-04-12T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Caracterização espectroscópica multivariada do potencial antioxidante de vinhos
title Caracterização espectroscópica multivariada do potencial antioxidante de vinhos
spellingShingle Caracterização espectroscópica multivariada do potencial antioxidante de vinhos
Gallice,Wellington César
wine
antioxidant potential
multivariate electronic spectroscopy
title_short Caracterização espectroscópica multivariada do potencial antioxidante de vinhos
title_full Caracterização espectroscópica multivariada do potencial antioxidante de vinhos
title_fullStr Caracterização espectroscópica multivariada do potencial antioxidante de vinhos
title_full_unstemmed Caracterização espectroscópica multivariada do potencial antioxidante de vinhos
title_sort Caracterização espectroscópica multivariada do potencial antioxidante de vinhos
author Gallice,Wellington César
author_facet Gallice,Wellington César
Messerschmidt,Iara
Peralta-Zamora,Patricio
author_role author
author2 Messerschmidt,Iara
Peralta-Zamora,Patricio
author2_role author
author
dc.contributor.author.fl_str_mv Gallice,Wellington César
Messerschmidt,Iara
Peralta-Zamora,Patricio
dc.subject.por.fl_str_mv wine
antioxidant potential
multivariate electronic spectroscopy
topic wine
antioxidant potential
multivariate electronic spectroscopy
description In this work the antioxidant capacity of red wine samples was characterized by conventional spectroscopic and chromatographic methodologies, regarding chemical parameters like color, total polyphenolic and resveratrol content, and antioxidant activity. Additionally, multivariate calibration models were developed to predict the antioxidant activity, using partial least square regression and the spectral data registered between 400 and 800 nm. Even when a close correlation between the evaluated parameters has been expected many inconsistencies were observed, probably on account of the low selectivity of the conventional methodologies. Models developed from mean-centered spectra and using 4 latent variables allowed high prevision capacity of the antioxidant activity, permitting relative errors lower than 3%.
publishDate 2011
dc.date.none.fl_str_mv 2011-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000300006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000300006
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.1590/S0100-40422011000300006
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.34 n.3 2011
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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