Volatile sulphur compounds composition of monovarietal white wines

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

Moreira, N (Autor) Outra; de Pinho, PG (Autor) FFUP; Santos, C (Autor) Outra; Vasconcelos, I (Autor) Outra

Revista

Título: Food Chemistry

Vol. 123 Nº 2

Páginas: 1198-1203

ISSN: 0308-8146

Editora: Elsevier

Indexação

ISI Web of Knowledge - 33 Citações

Scopus - 34 Citações

Outras Informações

ID Authenticus: P-003-02R

DOI: 10.1016/j.foodchem.2010.05.086

Abstract (EN): The sulphur compounds composition of wines produced experimentally from six white cultivars (Alvarinho, Loureiro, Trajadura, Pedera Azal Branco and Avesso) was evaluated during two consecutive vintages. Results show that wines could be differentiated according to their sulphur compounds content. In general, Loureiro, Trajadura and Pederna cultivars led to wines with low concentrations of sulphur compounds: however, Loureiro wines were characterised by significant amounts of dimethyl sulphone, whereas Trajadura wines possessed a high content of 3-(methylthio)propyl acetate and 4-(methylthio)-1-butanol. Alvarinho and Avesso wines showed high levels of S-methyl thioacetate, 3-mercapto-1-propanol, 3-(ethylthio)-1-propanol and 3-methylthiopropionic acid. Significant amounts of 2-methyltetrahydrothiophen-3-one, cis- and trans-2-methyltetrahydrothiophen-3-ol were also found in Avesso wines. Azal Branco wines were low in 3-(methylthio)propyl acetate and 2-(methylthio)ethanol, and high contents in S-methyl thioacetate, 3-mercapto-1-propanol and 2-mercaptoethanol. A linear discriminant analysis of sulphur compounds levels showed a differentiation of wines according to their varietal origin.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6