Stereodifferentiation of 3-mercapto-2-methylpropanol in wine

Citation
P. Bouchilloux et al., Stereodifferentiation of 3-mercapto-2-methylpropanol in wine, EUR FOOD RE, 210(5), 2000, pp. 349-352
Citations number
11
Categorie Soggetti
Food Science/Nutrition
Journal title
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
ISSN journal
14382377 → ACNP
Volume
210
Issue
5
Year of publication
2000
Pages
349 - 352
Database
ISI
SICI code
1438-2377(2000)210:5<349:SO3IW>2.0.ZU;2-K
Abstract
3-Mercapto-2-methylpropanol, an odorous compound recently identified in red wines, was extracted from a red wine variety, using a low-temperature vacu um distillation coupled with a specific reversible thiol capture. The analy sis of the diacetylated wine extract by enantioselective multidimensional g as chromatography with mass spectrometry detection revealed the presence of only one enantiomer, (R)-3-mercapto-2-methylpropanol. Although both of the optical isomers are characterized by the same broth and sweat odour, they have very different odour thresholds. The amounts of (R)-3-mercapto-2-methy lpropanol in young Cabernet-Sauvignon and Merlot wines can exceed its perce ption threshold, thus suggesting its contribution to the aroma of these win es.