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

Bibliographic Details
Main Author: Corazzola, Alessandro
Publication Date: 2012
Format: Master thesis
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/10400.5/8609
Summary: Mestrado Vinifera EuroMaster - Instituto Superior de Agronomia
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network_name_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
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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:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2025-03-17T16:06:10Zoai:repositorio.ulisboa.pt:10400.5/8609Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-29T04:02:46.507283Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
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:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
_version_ 1833601923325886464

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