Day 2: Wednesday, May 5th, 2021 – 9:30 am
Using Flash Detente to Improve Black Spanish/Lenoir Wine Quality in Texas
In Texas, Black Spanish (Lenoir) is primarily grown in the Hill Country, South East, and along the Gulf of Mexico. The plant is unique in that it carries a natural resistance to Phylloxera and Pierce’s Disease (PD). Flash-détente is a form of thermovinification that has been gaining attention from the wine industry lately. The process aims to disrupt cellular structures by super heating grapes for a short period of time followed by rapid cooling. This process results in increased extraction of anthocyanin pigments and copigments, especially tannins and phenolic acids. It also lowers methoxypyrazine levels in treated wines. We used Flash detente technology in this study in order to investigate its effects on Black Spanish (Lenoir) wine quality. Traditionally, Black Spanish wines have a “funky” aroma profile and have low tannins, which in turn can lead to color instability. The wines produced using Flash-detente technology had vastly improved color profiles and the sensory consumer panel indicated that there was a decrease in Black Spanish funk and an increase in mouthfeel, astringency, and tannins in Flash treatments.