Exploring 1H NMR relaxometry for wine traceability and authenticity assessment

Detalhes bibliográficos
Autor(a) principal: Zava, Andrea
Data de Publicação: 2020
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.5/25442
Resumo: Mestrado em Engenharia de Viticultura e Enologia (Double degree) / Instituto Superior de Agronomia. Universidade de Lisboa / Faculdade de Ciências. Universidade do Porto
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spelling Exploring 1H NMR relaxometry for wine traceability and authenticity assessmentauthenticityisotopesNMRrelaxometrywineMestrado em Engenharia de Viticultura e Enologia (Double degree) / Instituto Superior de Agronomia. Universidade de Lisboa / Faculdade de Ciências. Universidade do PortoThe development of analytical methodologies for wine authenticity assessment is one of the most challenging issues for the scientific community. In this study, the potential analytical applications of 1H NMR relaxometry, in view to wine authenticity investigation, were explored. For that, proton longitudinal relaxation rate dispersions in the range 0.04-300 MHz were investigated in three white and three red varietal wines from Tapada da Ajuda (Lisbon), obtained from Vitis vinifera L. grape varieties, namely Alvarinho, Arinto, Cabernet Sauvignon, Moscatel Graúdo, Touriga Nacional and Trincadeira, from vintages 2008 and 2017 for a total of twelve bottles. To evaluate rain as an environmental source of variability pluviometric data were considered. Dispersions associable to the presence of paramagnetic ions were observed at low frequencies but the results for wine iron content cannot explain the effect. Correlations between the wine characters and the areas drawn by the most representative relaxometry models show an effect of alcoholic strength by volume, glycerol and total dry matter suggesting wine viscosity to modulate relaxivity. To the best of our knowledge, for the first time wine physical-chemical characteristics and glycerol content have been compared to NMR relaxation rate profiles. To investigate the paramagnetic relaxation and evaluate the relaxation associated to wine hydro-alcoholic matrix, water-ethanol mixtures were tested, and linear regressions were obtained. Comparing the results with bibliographic sources, the paramagnetic enhancement on relaxation profiles was associated to the presence of manganese(II), but no parameters have been fitted from the models. The dispersions highlighted possible cross relaxations in the 1.5-6 MHz frequency range. The presence of nitrogen diluted into the wine could explain this behaviour. To inspect how each physical-chemical parameter impacts on wine relaxation profiles the knowledge of manganese content is crucials.n.Catarino, SofiaSebastião, Pedro OliveiraRepositório da Universidade de LisboaZava, Andrea2022-09-08T15:24:04Z20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.5/25442TID:203080718engZava, A. - Exploring 1H NMR Relaxometry for Wine Traceability and Authenticity Assessment. Lisboa: ISA, 2020, 111 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:RCAAP2023-03-06T14:55:00Zoai:www.repository.utl.pt:10400.5/25442Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:09:18.862530Repositório 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 Exploring 1H NMR relaxometry for wine traceability and authenticity assessment
title Exploring 1H NMR relaxometry for wine traceability and authenticity assessment
spellingShingle Exploring 1H NMR relaxometry for wine traceability and authenticity assessment
Zava, Andrea
authenticity
isotopes
NMR
relaxometry
wine
title_short Exploring 1H NMR relaxometry for wine traceability and authenticity assessment
title_full Exploring 1H NMR relaxometry for wine traceability and authenticity assessment
title_fullStr Exploring 1H NMR relaxometry for wine traceability and authenticity assessment
title_full_unstemmed Exploring 1H NMR relaxometry for wine traceability and authenticity assessment
title_sort Exploring 1H NMR relaxometry for wine traceability and authenticity assessment
author Zava, Andrea
author_facet Zava, Andrea
author_role author
dc.contributor.none.fl_str_mv Catarino, Sofia
Sebastião, Pedro Oliveira
Repositório da Universidade de Lisboa
dc.contributor.author.fl_str_mv Zava, Andrea
dc.subject.por.fl_str_mv authenticity
isotopes
NMR
relaxometry
wine
topic authenticity
isotopes
NMR
relaxometry
wine
description Mestrado em Engenharia de Viticultura e Enologia (Double degree) / Instituto Superior de Agronomia. Universidade de Lisboa / Faculdade de Ciências. Universidade do Porto
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-01-01T00:00:00Z
2022-09-08T15:24:04Z
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/10400.5/25442
TID:203080718
url http://hdl.handle.net/10400.5/25442
identifier_str_mv TID:203080718
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Zava, A. - Exploring 1H NMR Relaxometry for Wine Traceability and Authenticity Assessment. Lisboa: ISA, 2020, 111 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 s.n.
publisher.none.fl_str_mv s.n.
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
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