Production of Red Wines

Nowadays mainly pure selected cultures of wine yeasts are used in winemaking which led to a significant improvement of the wine technology because of the multiple benefits: ability to a quick and effective fermentation of grape juice or must with high sugar concentration; tolerance to high levels of ethanol and SO2; resistibility to high temperatures during fermentation. The increasing usage of trade produced selected yeasts for winemaking really lead to a lost of the natural and regional populations of yeasts.