Potencial da variedade "Trebbiano" na elaboração de espumantes.

Abstract

In recent years, more than 80% of the sparkling wines consumed in Brazil were made from national products. National sparkling wines have shown themselves to be competitive, conquering space in the national and international markets. The Gaucha Campaign has been standing out for the quality of the wines produced in recent years. The Trebbiano variety originates white wine with little varietal character and generally acidic, being widely used for blending with other white wines and mainly as a base for sparkling wine. The objective of this work was to analyze, in a sensory descriptive way, the Trebbiano varietal sparkling wine with different dosages of total sugars resulting in three distinct products, elaborated by the traditional method. As for the classical variables in oenology: density, alcohol content, total sugar in glucose, pH, titratable acidity and volatile acidity were analyzed using infrared spectroscopy, Foss Wine Scan equipment and official methods of analysis. Sensory analysis was performed using a descriptive form. At the end of the second fermentation, the measured variables presented values of 10,9% v/v of alcoholic strength, 106.6 meq.L-1 of total acidity, 0,4 gL-1 of volatile acidity and 0,6 total sugars gL Nature, 15 gL Brut and 45,5 gL Demi-sec. The varietal sparkling wines elaborated meet the quality standards established by Brazilian legislation. For visual analysis, there was a significant difference in relation to effervescence/perlage with greater intensity for the sparkling Nature. The olfactory analysis in general predominated the fruity aromas. In the gustatory analysis, there was a difference in the perception of sweetness for the Demi-sec sparkling wine and balance for the Brut sparkling wine. There was no statistical difference between the global preference of the three styles of elaborate sparkling wines, however there was a difference in the preference for the Demi-sec sparkling wine. The results prove that the Gaucha Campaign demonstrates the potential, as well as the Trebbiano variety, for the production of quality varietal sparkling wines.