Kvasny Prumysl, 1985 (vol. 31), issue 10
Chilling and beer output I.Peer-reviewed article
A. KRATOCHVÍLE
Kvasny Prum. 1985; 31(10): 227-232 | DOI: 10.18832/kp1985055 
Basic principles of chilling, properties of coolants and heat transfer by coolants are briefly described. In the part2 amagnitude of the chilling capacity with respect to the annual beer output is derived. The article forms the first part explaining the technical conditions of chilling in a brewery. The parts II and III will follow in the next numbers of the journal.(In Czech, English summary only)
Maintenance of production strains of baker's yeasts.Peer-reviewed article
J. PÁSKOVÁ, J. FABIÁN, A. KOCKOVÁ-KRATOCHVÍLOVÁ
Kvasny Prum. 1985; 31(10): 232-236 | DOI: 10.18832/kp1985056
A conservation of the production strain of baker's yeast by lyophilisation and by ultralow temperature in liquid nitrogen was tested. After lyophilisation in a diluted serum with 5 % lactose 11,3 % of the cells survived. The thermal test performed by a heating of evacuated sealed ampoules to80 °Cfor 30 min showed the survival of 1,6 % of the cells. The lyophylised cultures showed no worse technological properties (on laboratory and plant scale) during fermentations. Only an increased variability of the biomass growth and the ability to ferment maltose was determined on a base of the statistical evaluation. The preservation by the ultralow temperature...
Changes of glucose metabolism during starvation of baker's yeast.Peer-reviewed article
J. PÁCA
Kvasny Prum. 1985; 31(10): 236-242 | DOI: 10.18832/kp1985057
The kinetics production, glucose-induced medium acidification and endogenous respiration were studied in baker's yeast starved aerobically for 0, 28, 54 and 96 h in salt solution (9 gper litre NaCl) at35 °C. Except for the last interval, prolonged starvation brought about an overall increase in most parameters. The transient increase in endogenous respiration observed after glucose addition was lowered with proceeding starvation. A 96 h starvation brought about a change in the kinetics of ethanol production, sharp increase in acetate production and a strong reduction of both the extent and the rate of glucose-induced acidification and of endogenous...
The influence of the substrate on the production of secondary metabolites by some fungi.Peer-reviewed article
A. FUSKOVÁ, J. FUSKA, M. ŠTURDÍKOVÁ, J. AUGUSTÍN
Kvasny Prum. 1985; 31(10): 242-243 | DOI: 10.18832/kp1985058
Biosynthesis of secondary metabolites can be also regulated by the used carbon as well as nitrogen source. Biosynthesis of vermikulin and vermistatin by P. vermiculatum, palitantin and frekventin by P. frequentans as well as tropolones by P. stipitatum can be regulated by the carbon sources. The production of giberelins and bikaverins by Giberella fujikuroi, as well as duklauxin and cytostipin by P. stipitatum can be influenced by the nitrogen substrates.(In Slovak, English summary only)