Statistical correlations between the in-mouth textural characteristics and the chemical composition of Shiraz wines

J Agric Food Chem. 2007 Apr 4;55(7):2683-7. doi: 10.1021/jf0633950. Epub 2007 Mar 10.

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.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ethanol / analysis
  • Female
  • Flavonoids / analysis
  • Humans
  • Hydrogen-Ion Concentration
  • Male
  • Phenols / analysis
  • Pigments, Biological / analysis
  • Polyphenols
  • Sensation*
  • Tannins / analysis
  • Wine / analysis*

Substances

  • Flavonoids
  • Phenols
  • Pigments, Biological
  • Polyphenols
  • Tannins
  • Ethanol