Litteris et Artibus
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Item Activation of alcohol yeast(Видавництво Львівської політехніки, 2017-12-23) Palianytsia, Liubov; Berezovska, Natalia; Kosiv, Ruslana; Pikh, Zorian; Kharandiuk, Tetiana; Lviv Polytechnic National UniversityThe influence of alcoholic yeast treatment with electrochemically activated water (EAW) on their enzymatic activity in the fermentation and generation, improve their physiological state was investigated. The obtained results showed that catholyte has the greatest effect on alcoholic yeast activity. The use of electrochemically activated water in alcohol production can reduce the duration of the biotechnological process and increase the finished product yield.Item Effect of heat treatment on brewer's yeast fermentation activity(Lviv Polytechnic Publishing House, 2015) Kharandiuk, Tetiana; Kosiv, Ruslana; Palianytsia, Liubov; Berezovska, Natalia; Lviv Polytechnic National UniversityThe influence of temperature treatment of brewer's yeast strain Saflager W-34/70 at temperatures of -17, 20, 25, 30, 35, 40 °C on their fermentative activity was studied. It was established that the freezing of yeast leads to a decrease of fermentation activity in directly proportional to the duration way. Fermentative activity of yeast samples can be increased by 20-24% by heat treatment at 35 °C during 15-30 minutes.