Investigating the Aroma of Syrah Wines from the Northern Rhone Valley Using Supercritical CO2-Dearomatized Wine as a Matrix for Reconstitution Studies

Geffroy, O. ; Morère, M. ; Lopez, R. (Universidad de Zaragoza) ; Pasquier, G. ; Condoret, J.S.

Resumen: This study aimed to investigate the key compounds involved in the aroma of French Syrah wines from the northern Rhone valley from two vintages characterized by distinct climatic conditions. The volatile composition of the wines was assessed through the determination of 76 molecules. After identifying the best matrix and best model for aroma reconstitution studies, omission tests were conducted using the Pivot profile method. For both vintages, 35 molecules with odor activity values (OAVs) above 0.5 were identified. While remarkably high levels of 2-furfurylthiol (FFT) were reported in both wines, rotundone and 3-sulfanylhexanol (3SH) enabled the strongest discrimination between the two wines. Wine dearomatized using supercritical carbon dioxide (sCO2) was identified as the best matrix. The best models built using this matrix were composed of molecules with OAV > 5 and OAV > 10 highlighting that this dearomatization approach can be valuable to reconstitute the aroma of wine using a small number of molecules. For the cool vintage wine, the omission of rotundone and FFT had the greatest impact on the olfactive profile for nonanosmic and anosmic respondents to rotundone, respectively. 3SH, whose omission decreased the rating of the "fruity" attribute, was identified as the main contributor to the aroma of Syrah wine produced in the warm vintage.

Idioma: Inglés

DOI: 10.1021/acs.jafc.0c04328

Año: 2020

Publicado en: JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 68, 41 (2020), 11512-11523
ISSN: 0021-8561

Factor impacto JCR: 5.279 (2020)

Categ. JCR: CHEMISTRY, APPLIED rank: 13 / 74 = 0.176 (2020) - Q1 - T1
Categ. JCR: AGRICULTURE, MULTIDISCIPLINARY rank: 5 / 57 = 0.088 (2020) - Q1 - T1
Categ. JCR: FOOD SCIENCE & TECHNOLOGY rank: 24 / 143 = 0.168 (2020) - Q1 - T1

Factor impacto SCIMAGO: 1.203 - Chemistry (miscellaneous) (Q1) - Agricultural and Biological Sciences (miscellaneous) (Q1)

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Química Analítica (Dpto. Química Analítica)