Kvasny Prumysl, 1980 (vol. 26), issue 3
Choosing adequate cooling systems for fermenting cellars and vathouses.Peer-reviewed article
T. LEJSEK
Kvasny Prum. 1980; 26(3): 49-54 | DOI: 10.18832/kp1980008 
Average capacity of tuns and tanks used in brewing industry is steadily rising and it is therefore necessary to introduce direct cooling of fermenting tuns. To evaluate various methods of direct cooling tuns of two kinds with capacities ranging from 500 to 1500 hl were fitted with three different systems. All tuns were vertical with tapered bottoms and by their construction they were essentially jacketed kettles. Taking into account differing brewing methods and resulting differing requirements to cooling intensity, three systems ware compared, viz.: spiral channels forming a labyrinth for cooling brine pumped at normal air pressure, a similar system...
In breweries calculators replace traditional tables.Peer-reviewed article
J. ŠAVEL
Kvasny Prum. 1980; 26(3): 54-56 | DOI: 10.18832/kp1980009
Traditional tables which are used in breweries and contain all data necessary for routine analyses are now being gradually replaced by formalae stored in the memory of desk calculators. Relation between the relative density (x) and percentage (y) of extract or alcohol (in terms of mass) can b expressed as: y = a + bx + cx2 or in a more narrow limits of values, as: y = a + bx. The article deals with the estimates of constants a, b and c for various types of tables and with the program for the TI 58 calculator which can be used to calculate them.(In Czech, English summary only)
Stimulating growth of Candida utilis with ammoniacal extract produced by reducing the concentration of nucleic acids.Peer-reviewed article
M. RUT, F. ŠTROS
Kvasny Prum. 1980; 26(3): 57-64 | DOI: 10.18832/kp1980010
When nucleic acids are being separated from yeast biomass produced through cultivation on synthetic ethanol, the by-products is ethanol-ammoniacal extracts, containing very active compounds having favourable effects upon the biosynthesis of yeast. Some of them stimulate growth, others are important sources of carbon and nitrogen in catabolic processes, or serve as structure elements taking part in anabolic processes producing important oligomers. From oxygen consumption in the period of yeast biosynthesis it has been calculated that the intensity of anabolic processes can be increased by 8.1 %. Stimulating effects of mentioned compounds brought another...