Identification, Quantitation, and Sensory Evaluation of Thiols in Bordeaux Red Wine with Characteristic Aging Bouquet
2023
Chen, Liang | de Longhi, Emilio | Pons, Alexandre | Buffeteau, Thierry | Daugey, Nicolas | Redon, Pascaline | Shinkaruk, Svitlana | Darriet, Philippe | Unité de Recherche Œnologie [Villenave d'Ornon] (OENO) ; Université de Bordeaux (UB)-Institut des Sciences de la Vigne et du Vin (ISVV)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Institut des Sciences Moléculaires (ISM) ; Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1 (UB)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)
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Mostrar más [+] Menos [-]Inglés. Great Bordeaux red wines are known for their distinctive aging bouquet. However, the nature of volatile chemicals underpinning this sensory expression is not fully understood. This work investigated the empyreumatic aging bouquet of a collection of premium Bordeaux red wines using silver-ion (Ag +) solid-phase extraction, cryogenic heart-cutting multidimensional gas chromatography mass spectrometry/olfactometry, and comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry. In doing so, a substantial number of "meaty" odors were revealed. Three detected "meaty" notes were tentatively or unequivocally attributed to furan thiols. Among them, 2-methyltetrahydrofuran-3-thiol (1) with a pleasant "meaty" aroma was reported in wine for the first time. Its trans isomer (trans-1a) was resolved from its racemate by chemical modification, which confirmed its presence in wine. The odor detection threshold of trans-1a in the model wine was determined at 55 ng/L. Moreover, an additive effect between 1 and literature-known 2-methyl-3-furanthiol was observed. By a new ultra high-performance liquid chromatography quadrupole Orbitrap high-resolution MS method, the concentration of trans-1a, in addition to those of 2-methyl-3furanthiol and 2-furfuryl thiol, was measured in the wines at ng/L levels.
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Este registro bibliográfico ha sido proporcionado por Institut national de la recherche agronomique