Identification, Quantitation, and Sensory Evaluation of Thiols in Bordeaux Red Wine with Characteristic Aging Bouquet - Archive ouverte HAL
Article Dans Une Revue Journal of Agricultural and Food Chemistry Année : 2023

Identification, Quantitation, and Sensory Evaluation of Thiols in Bordeaux Red Wine with Characteristic Aging Bouquet

Résumé

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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Dates et versions

hal-04270027 , version 1 (03-11-2023)

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Citer

Liang Chen, Emilio de Longhi, Alexandre Pons, Thierry Buffeteau, Nicolas Daugey, et al.. Identification, Quantitation, and Sensory Evaluation of Thiols in Bordeaux Red Wine with Characteristic Aging Bouquet. Journal of Agricultural and Food Chemistry, 2023, 71 (43), pp.16248-16259. ⟨10.1021/acs.jafc.3c05854⟩. ⟨hal-04270027⟩
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