title: Statistical correlations between the in-mouth textural characteristics and the chemical composition of Shiraz wines.
abstract: The relationships between the levels of polyphenols, acidity, and red pigments in Shiraz wines and their perceived textural profiles as quantified by a trained sensory descriptive analysis panel were explored. A "chamois-like" feeling when the wine was held in the mouth appeared to be related to an absence of polyphenols. The in-mouth "chalk-like" texture was strongly associated with anthocyanin concentration and was negatively associated with alcohol level and acidity. The astringent subqualities of "velvet-like" and "emery-like" roughing were mostly related to polyphenol levels, but these attributes could not be adequately differentiated by the compositional variables under study. Wines that elicited a "puckery" sensation were characterized by relatively low anthocyanin levels, high acidity, and high pigmented polymer and tannin concentrations. The results of the study suggest that the in-mouth textural properties of Shiraz red wine are associated not only with their tannin composition and concentration but also with their acidity and anthocyanin and alcohol concentrations.
authors.affiliation: The Australian Wine Research Institute, P.O. Box 197, Glen Osmond 5064, Australia. richard.gawel@awri.com.au
authors.forename: Richard
authors.initials: R
authors.lastname: Gawel
authors.forename: Leigh
authors.initials: L
authors.lastname: Francis
authors.forename: Elizabeth J
authors.initials: EJ
authors.lastname: Waters
mesh_terms: D000431:Ethanol / Q000032:analysis; D005260:Female; D005419:Flavonoids / Q000032:analysis; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008297:Male; D010636:Phenols / Q000032:analysis; D010860:Pigments, Biological / Q000032:analysis; D059808:Polyphenols; D012677:Sensation; D013634:Tannins / Q000032:analysis; D014920:Wine / Q000032:analysis*
chemical_list: D005419:Flavonoids; D010636:Phenols; D010860:Pigments, Biological; D059808:Polyphenols; D013634:Tannins; D000431:Ethanol