Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)

Detalhes bibliográficos
Autor(a) principal: Corazzola, Alessandro
Data de Publicação: 2012
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/8609
Resumo: Mestrado Vinifera EuroMaster - Instituto Superior de Agronomia
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spelling Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)FTIRcondensed tanninsred winevalidationreverse phase fractionationMestrado Vinifera EuroMaster - Instituto Superior de AgronomiaGrape-derived condensed tannins, also known as proanthocyanidins, are critical quality components for red wines. They have been subject of numerous studies in order to find a fast and reliable methodology for their quantification. In this work it has been tested the method using Fourier transform mid-infrared (FTIR) and chemometrics to quantify the amount of condensed tannins present in 88 different red wines, with the reference method of precipitation with methylcellulose. As well it has been provided a single laboratory validation of the method of fractionation of condensed tannins by reverse phase and quantification by reaction with vanillin. The models developed for the FTIR spectroscopy were not enough robust for the estimation of total condensed tannins, with low values of coefficient of determination and low RPD values (R2 cross-validation: 0,76 and RPD cross-validation: 1,86). Validation of the fractionation method showed good performance in precision, with values of coefficient of variance for the three fractions FIII, FII and FI respectively of 5,2%; 11,4% and 11,6% and values of reproducibility of 168,1; 32,9 and 3,4 mg/L of epicatechin equivalents, but it was not possible to perform effective recovery studiesISA/ULLaureano, OlgaRepositório da Universidade de LisboaCorazzola, Alessandro2015-12-31T01:30:11Z20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.5/8609engCorazzola, A. - Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR). Lisboa: ISA, 2012, 69 p.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-12-24T01:32:23Zoai:www.repository.utl.pt:10400.5/8609Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:55:34.477356Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)
title Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)
spellingShingle Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)
Corazzola, Alessandro
FTIR
condensed tannins
red wine
validation
reverse phase fractionation
title_short Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)
title_full Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)
title_fullStr Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)
title_full_unstemmed Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)
title_sort Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR)
author Corazzola, Alessandro
author_facet Corazzola, Alessandro
author_role author
dc.contributor.none.fl_str_mv Laureano, Olga
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Corazzola, Alessandro
dc.subject.por.fl_str_mv FTIR
condensed tannins
red wine
validation
reverse phase fractionation
topic FTIR
condensed tannins
red wine
validation
reverse phase fractionation
description Mestrado Vinifera EuroMaster - Instituto Superior de Agronomia
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01T00:00:00Z
2015-12-31T01:30:11Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.5/8609
url http://hdl.handle.net/10400.5/8609
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Corazzola, A. - Quantification of condensed tannins in red wines by Fourier transform mid-infrared spectroscopy (FTIR). Lisboa: ISA, 2012, 69 p.
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ISA/UL
publisher.none.fl_str_mv ISA/UL
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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