glycerol

Lemma

glycerol

Etichetta di dominio

EN

Etichetta grammaticale

n.

Definizione

A colorless, odorless, syrupy substance that, in winemaking, is an incidental by-product of fermentation. 1

Nota

After ethanol and carbon dioxide, glycerol is the most abundant product of yeast fermentation. Several parameters have been shown to influence the final glycerol levels in wine. These include the ripeness of grapes, the microbial flora on grape berries and cellar equipment, as well as the pH, fermentation temperature, the nitrogen source and the yeast strain. Glycerol is typically found at concentrations of 4 -10 g/L in dry wine and in the case of the botrysized late harvest wines, levels in excess of 20 g/L are not uncommon. In the latter case, grape berries infected by Botrytis cinerea already contain significant amounts of glycerol as a result of the metabolism of the fungus, which explains the high glycerol levels commonly found in this wine style. 2

Contesto

Sweetness is the main contribution of glycerol to sensory characteristics at levels commonly found in wines. 3

Trascrizione fonetica

[ˈglɪs.ə.rɒl] 4

Sinonimi e Antonimi

Glycerin, glycerine. 5

Abbreviazioni
ND
Etimologia

1884, from glycerine + -ol.
Glycerin: also glycerine, 1838, from Fr. glycérine, coined by French chemist Michel-Eugène Chevreul (1786-1889), from Gk. glykeros "sweet" (see glucose) + chemical ending -ine
-ol: suffix denoting alcohols. 6

Etichetta di paese
ND
Ente

Università degli Studi di Genova - Facoltà di Lingue e letterature straniere - Corso di laurea Teorie e tecniche della mediazione interlinguistica

Data della scheda
Thu Oct 9 00:00:00 2008
Autore

Marco Carchia rev. Gerbaudo

Fonti

1 : «http://www.answers.com/topic/glycerol-glycerine», (16/11/2011)

2 : «http://waterhouse.ucdavis.edu/winecomp/glycerol.htm», (28/07/2008)

3 : «http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=90995», (30/09/2008)

4 : «http://dictionary.cambridge.org/dictionary/british/glycerol?q=glycerol», (16/11/2011)

5 : Incerti Caselli L., Il nuovo dizionario Hazon Garzanti, inglese-italiano italiano-inglese. Milano, Garzanti, 1990, p. 412, 1629.

6 : «http://www.etymonline.com/index.php», (16/11/2011)

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