Volatile sulphur compounds in wines related to yeast metabolism and nitrogen composition of grape musts
نویسندگان
چکیده
منابع مشابه
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...
متن کاملSulphur Metabolism of Yeast.
Two general conclusions are warranted as to the sulphur metabolism and nutrition in animals. The first is that although most of the sulphur taken into the system is in the reduced form, that is, mainly as cystine or possibly also as cysteine, nevertheless the main end product of normal sulphur metabolism is the completely oxidized sulphate form. This is well established by numerous investigatio...
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The effect of deficit irrigation and a kaolin-based, foliar reflectant particle film (PF) on grape composition and volatile compounds in Merlot grapes was investigated over two growing seasons in semi-arid, south-western Idaho. Vines were provided with differential amounts of water based on their estimated crop evapotranspiration (ET(c)) throughout berry development, and particle film was appli...
متن کاملVolatile and Glycosidically Bound Composition of Loureiro and Alvarinho Wines
Composition of Loureiro and Alvarinho wines from the Vinhos Verdes region, respecting free volatile compounds as well as glycosidically bound aroma precursors, was exhaustively determined by GC-MS after adsorption on XAD-2 resin. On the whole, were identified and quantified 120 volatile compounds in the free fraction and 77 glycosidically bound compounds, belonging to C6-compounds, alcohols, fa...
متن کاملVolatile sulphur compounds in morning breath of human volunteers.
OBJECTIVE morning breath contains elevated concentrations of volatile sulphur components (VSCs). Therefore, morning breath is recognised as a surrogate target for interventions on breath quality. Nevertheless, factors influencing morning breath are poorly understood. Our aim was to evaluate concentrations of VSC at the time of awakening. METHODS a procedure was developed to collect breath sam...
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ژورنال
عنوان ژورنال: Analytica Chimica Acta
سال: 2002
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(01)01618-x