Effect of heat treatment on brewer's yeast fermentation activity

Tetiana Kharandiuk1 tetyanakharandyuk [at] gmail.com
Ruslana Kosiv1
Liubov Palianytsia1
Natalia Berezovska1
  1. Technology of Organic Products Department, Lviv Polytechnic National University, UKRAINE, Lviv, S. Bandery street 12
Abstract 

The 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

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