Kvasny Prumysl, 1996 (vol. 42), issue 4
Beer haze filterabilities and their differentiation. I. Theoretical presumptions and method description.Peer-reviewed article
J. VOBORSKÝ, T. ©RUMA
Kvasny Prum. 1996; 42(4): 125-128 | DOI: 10.18832/kp1996008 
In the first part of the work a methodical process of hazes differentiation in non-filtered beer is described, which influence upon beer filterability. The principle lies in activity of specified enzymes and following beer filterability determination by means of laboratory filtration. For this method application an enzymes set of the firm QEST International were selected with ß-g1ucanase, proteinase and combined activity (Bioglucanase-L054, Profix-L087 and Promalt-L141). The average raise of pressure difference and filtrate haze is assessed through laboratory filtration with constant rate. Hazes are assessed before and after filtration using coarse...
The Influence of Ethanol and Temperature on Yeast Growth.Peer-reviewed article
Z. CIESAROVÁ, D. ©MOGROVIČOVÁ
Kvasny Prum. 1996; 42(4): 129-132 | DOI: 10.18832/kp1996009
Changes of growth rate of 18 Saccharomyces cerevisiae yeast strains after extracellular ethanol addition and after fermentation under increased temperature respectively were studied. Combined effect of ethanol (6 % v/v) and temperature (35 °C) resulted in 60 % decrease of biomass acquisition. On the other hand, ethanol only in concentration 6-9 % v/v at 28 °C stimulated yeast growth rate. Small increase of temperature (from 28 °C to 33-35 °C) in earlier growth phases positively affected growth rate and ethanol production.(In Slovak, English summary only)