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Please use this identifier to cite or link to this item: http://hdl.handle.net/10400.5/4183

Title: Pesquisa de compostos voláteis de enxofre varietais em vinhos brancos elementares de castas portuguesas
Authors: Ferreira, David Manuel Lopes
Advisor: Silva, Jorge Manuel Ricardo
Pinho, Paula Guedes
Keywords: grapevine
portuguese varieties
3MH
3MHA
4MMP
gas-chromatography
olfactometry
Issue Date: 2011
Publisher: ISA/UTL
Citation: Ferreira, David Manuel Lopes - Pesquisa de compostos voláteis de enxofre varietais em vinhos brancos elementares de castas portuguesas. Lisboa: ISA, 2011
Abstract: 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
Description: Mestrado em Viticultura e Enologia - Instituto Superior de Agronomia / Faculdade de Ciências. Universidade do Porto
URI: http://hdl.handle.net/10400.5/4183
Appears in Collections:BISA - Dissertações de Mestrado / Master Thesis

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