Today, the issue of developing a comprehensive non-waste technology for the processing of grain raw materials into ethyl alcohol in order to reduce the cost of the target product – is relevant. In the fermentation of the wort of high concentrations, the physiological and biochemical activity of yeast is of great importance. The physiological state of yeast is determined by the composition of the wort, which must contain a sufficient amount of digestible sugars, nitrogen and mineral substances. The aim of the work was to study the influence of metal citrates on the process of cultivating yeasts and their use in the bioconversion of high concentration carbohydrate carbohydrates from starchy raw materials, with subsequent determination of the qualitative and quantitative composition of the volatile part of the mature shoots. It was investigated that the use of mineral nutrition for the cultivation of yeast allowed to accumulate the required number of cells, reduce the duration of yeast production to 18–20 h, and obtain yeast cells with high physiological and biochemical activity. In samples using yeast, cultivated with citrates of metals, the chemical and technological parameters of the brains were better than control. The content of alcohol in mussels grew by 1–3 % in accordance with the metal citrate added. In the study of the synthesis of volatile impurities in distillates, there was also a positive effect of metal citrates on their use at the stage of yeast cultivation. The investigations were carried out in the laboratory conditions of and alcohol plants in the production of alcohol from starch-containing raw materials.
highly concentrated must, dry matter, metal citrates, fermentation