ISHS Acta Horticulturae 388: International Symposium on Viticulture and Enology
CHARACTERIZATION OF VALENCIAN VARIETAL GRAPE MUSTS BY NATURAL ABUNDANCE DEUTERIUM NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY |
| Authors: | J.E. Giménez-Miralles, V. Guardiola, D. Salazar, I. Solana |
| Keywords: | Vitis vinifera L. grape musts, characterization, site-specific natural isotope fractionation (SNIF), deuterium nuclear magnetic resonance (2H-NMR) spectroscopy |
| Abstract:
To contribute to the characterization of the origin of Valencian varietal grape musts, quantitative deuterium nuclear magnetic resonance spectroscopy has been employed, and absolute site-specific natural abundace deuterium/hydrogen isotope ratios of ethanol obtained through fermentation of grape musts from Vitis vinifera L. cultivars Airén, Bobal, Garnacha, Malvasía, Merseguera, Monastrell, Moscatel (Muscat), Subirat, Tempranillo and Tintorera have been investigated. Deuterium intramolecular distribution patterns of ethanol have been shown to differ significantly in some cases according to the geographical and varietal origin of the samples. Thus, feasibility of using the site contents of natural abundance deuterium in fermentation ethanol as probe for differentiating varietal grape musts coming from close viticultural zones according to their natural sources is strongly suggested. | |
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