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Publicação
Pesquisa de compostos voláteis de enxofre varietais em vinhos brancos elementares de castas portuguesas
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Autores
Orientador(es)
Resumo(s)
In this work, the sulphur varietal compound aromatic potencial of 7 Portuguese Grapes
wines was studied in comparision with Sauvignon Blanc. The aroma compounds
containing sulphur compounds as 3-mercaptohexyl acetate (A3MH), 3-mercaptohexanol
(3MH) and 4-mercapto-4-methylpentan-2-one (4MMP) were searched in particular. GCFPD,
GC-MS and GC-Olfactometry analysis were conducted to obtain confirmation of the
existence of those compounds.
Only GC-olfactometry revealed the presence of two olfactory zones relatives of the 4MMP
and 3MH in all Portuguese Grape varieties wines from 2009, and a third intermediary
olfactory zone relative of A3MH only revealed in the young 2010 wines from Arinto and
Fernão Pires.
The 4MMP and the A3MH were not quantified nevertheless the olfactometric measures
allow to determine relative differences among wines. The 3MH was semi-quantified in 5 of
the Portuguese varieties wines using GC-FPD equipment.
Some of the portugueses grape wines presented varietal tiol aromatic intensity
comparable in scale with the Portuguese Sauvignon Blanc Win
Descrição
Mestrado em Viticultura e Enologia - Instituto Superior de Agronomia / Faculdade de Ciências. Universidade do Porto
Palavras-chave
grapevine portuguese varieties 3MH 3MHA 4MMP gas-chromatography olfactometry
Contexto Educativo
Citação
Ferreira, David Manuel Lopes - Pesquisa de compostos voláteis de enxofre varietais em vinhos brancos elementares de castas portuguesas. Lisboa: ISA, 2011