Kvasny Prumysl, 1991 (vol. 37), issue 10-11
Evaluation of varieties and selection of spring brewing barley from crop 1989.Peer-reviewed article
M. HLAVINKOVÁ, K. KOSAŘ
Kvasny Prum. 1991; 37(10-11): 281-283 | DOI: 10.18832/kp1991027 
Keeping the right technology of brewing barley production from Czechoslovak varieties of spring barleys the malts produced belong to the top of world quality. The variety with highest quality remains Rubín followed by new materials of SK-2790 and ST-145. With respect to the new trend of greater selection there is necessary to make some changes in the present system for an evaluation of malting quality parameters. The number of the quality parameters will have to be increased.(In Czech, English summary only)
Analysis and development of brewing barley and malt productions in Czechoslovakia and their position on international trade.Peer-reviewed article
J. LEKE©
Kvasny Prum. 1991; 37(10-11): 284-287 | DOI: 10.18832/kp1991028
The malt export from Czechoslovakiawas 286 thousands tons in 1990. The production of a demanded quantity of the high quality barley still remains very important. From its whole world production only about 11 % of barley is malted. However, about 30 % of barley is malted inCzechoslovakia. From the competition viewpoint only the high quality malt can be sold on world markets. If the prescribed technology discipline will be kept during a procedure of brewing barley and malt production the export of could be increased.(In Czech, English summary only)
Cleaning preparates for hot and cold washing of brewing equipment.Peer-reviewed article
P. «OPKA, J. ©URÁŇ
Kvasny Prum. 1991; 37(10-11): 288-291 | DOI: 10.18832/kp1991029
Two new cleaning preparates are compared in this article. The preparates were developed in an cooperation of production plants with the Research Institute of Brewing and Malting inPrague. The powder preparate Synalod 338 can be used for a hot washing in a brewery. The liquid preparate Helavin P is suitable for cold washing and disinfection as well as for a periodic removal of a beer stone.(In Czech, English summary only)
Critical study of fermentor aeration capacity (k1a) measurement methods. 2. Dynamic measurement methods.Peer-reviewed article
V. LINEK, C. HOLEČEK
Kvasny Prum. 1991; 37(10-11): 291-293 | DOI: 10.18832/kp1991030
In the first part of the paper general causes of the k1a measurement errors were quantitatively analyzed and an analysis of the steady-state methods was presented. This part shows results of tests of mainly used dynamic methods. Measurements were tested by comparing k1a values resulting from the method tested with those found under identical conditions by a method, the reliability of which was proved in advance. Mainly used dynamic methods yield in noncoalescent systems errors of k1a values up to hundreds of per cent. In all cases tested the error was caused by incorrect assumptions in the oxygen transport model, because...
Effect of different regimes of separation on biomass and protein content in cultures of algae..Peer-reviewed article
K. LÍVANSKÝ
Kvasny Prum. 1991; 37(10-11): 293-296 | DOI: 10.18832/kp1991031
Changes of light and dark result in cultures of algae in periodic intracellular changes of productivity and protein level. This article is focused on the mathematic analysis of four simple regimes of algae separation from the culture unit of 225 m2. The calculations show that the maximum value of the biomass production can be obtained with the afternoon separation. On the other hand, from the standpoint of protein content the most suitable time for the separation is before or at the start of the cultivation. This procedure permits to obtain by 50 % higher proteins in comparison to the afternoon separation.(In Czech, English summary only)