Effect of protease and phytase on the physiological state of alcoholic yeast in cultivation

Saccharomyces cerevisiae yeast is used in the production of ethyl alcohol. The main requirements for yeast used in the production of ethyl alcohol from starch-containing raw materials: alcohol yeast used in the processing of starchy raw materials must have high fermentation activity; complete fermentability of sugars, resistance to metabolic products, resistance to the development of extraneous microflora. Proteolytic enzyme preparation Prolive BS Liquid was used as a source of protease. Kingphos enzyme preparation was used as a source of phytase. The effect of the enzyme preparations of the neutral protease Prolive BS Liquid and Phytase Kingphos on the fermentation activity of alcohol yeast Saccharomyces cerevisiae race XII was studied. The maximum fermentation activity is possessed by yeast cultivated on the wort, obtained using protease and phytase. The duration of the exponential growth phase in the experiment is 14-16 hours, in the control -18-20 hours. The exponential phase is described by the Mono equation...