Kovalchuk S. Improvement of technology of high concentrations marsh from grain–growing raw material

The dissertation is devoted to the development of technology of highly concentrated mussels from starchy raw material, which allows to increase the concentration of alcohol in alcohol marsh, to reduce specific energy consumption and the amount of environmentally waste. Selected yeast race S. cerevisiae ДО–16 for fermentation of wort with a concentration of dry substances up to 32 % at pH 3,0…6,0. It has been established that in the cultivation of yeast in a wort at a concentration of 28 % DS and above the necessary condition is the correction of nitrogen nutrition by additional addition of glycine, as amine nitrogen or carbamide. As activators of physiological and biochemical properties of alcoholic yeast, the possibility of using metals in nano– ion forms (manganese, iron, copper, zinc, magnesium) was investigated. More effective is the use of zinc and magnesium. Compositions and concentrations of enzyme preparations for hydrolysis of raw materials components are established.To ensure efficient fermentation of highly concentrated must, the optimum amount of seed yeast is determined. In order to intensify alcohol fermentation, the fermentation of a highly concentrated must should be carried out at the appropriate temperatures: the first stage (24 hours) – 35 ° C; second stage (48 hours) – 30 ° С, which will also contribute to reducing the loss of carbohydrates by 20…30 %, and as a result of increased alcohol concentration.