Volatile sulphur compounds composition of monovarietal white wines

The sulphur compounds composition (Alvarinho, Loureiro, Trajadura, Pedernã vintages. Results show that wines could In general, Loureiro, Trajadura and Ped compounds; however, Loureiro wines w whereas Trajadura wines possessed a thio)-1-butanol. Alvarinho and Avesso w 1-propanol, 3-(ethylthio)-1-propanol an tetrahydrothiophen-3-one, cisand tran wines. Azal Branco wines were low in 3contents in S-methyl thioacetate, 3-mer analysis of sulphur compounds levels sh * Corresponding author. Fax: +351 22 509035 E-mail address: [email protected] ( es produced experimentally from six white cultivars ranco and Avesso) was evaluated during two consecutive rentiated according to their sulphur compounds content. ltivars led to wines with low concentrations of sulphur racterised by significant amounts of dimethyl sulphone, ontent of 3-(methylthio)propyl acetate and 4-(methylhowed high levels of S-methyl thioacetate, 3-mercaptothylthiopropionic acid. Significant amounts of 2-methylthyltetrahydrothiophen-3-ol were also found in Avesso lthio)propyl acetate and 2-(methylthio)ethanol, and high -propanol and 2-mercaptoethanol. A linear discriminant