Kvasny Prumysl, 1985 (vol. 31), issue 9
Synthesis of ergosterol and activity of brewing yeasts.Peer-reviewed article
T. GINOVA-STOLJANOVA, V. JENEVA
Kvasny Prum. 1985; 31(9): 201-204 | DOI: 10.18832/kp1985051 
The synthesis of ergosterol was tested with three yeast strains on laboratory and plant scale under different conditions of fermentation. The relations among ergosterol synthesis, biomass growth and glycogen metabolism were determined. The results show that the rate of fermentation depends on the content of ergosterol in the inoculated yeasts. The content of unsaturated lipids in cells and wort significantly affects the cell physiology - multiplication and growth of cells, an utilization of nutrients and a production of metabolites. The lipid composition of yeasts is the factor with whom the fermentation can be controlled.(In Czech, English summary only)
Optimalization of conditions for assimilation tests of yeasts.Peer-reviewed article
R. KOVAČOVSKÁ, E. SLÁVIKOVÁ
Kvasny Prum. 1985; 31(9): 204-206 | DOI: 10.18832/kp1985052
The significant factor for the determination of yeast species is the ability to assimilate carbon and nitrogen sources by yeasts and yeast-like microorganisms. The effects of pH, temperature, a concentration of the inoculated suspension and that of substrates used for assimilation were tested. The standard procedure for the determination of the yeast species is described.(In Slovak, English summary only)
Control of growth and penicillin biosynthesis of production strain during initial hours of fermentation.Peer-reviewed article
V. MATELOVÁ
Kvasny Prum. 1985; 31(9): 206-208 | DOI: 10.18832/kp1985053
The author found conditions by which a growth rate of mycelium and biosynthesis of penicillin during the early hours of fermentation can be controlled.(In Czech, English summary only)
Microbiological treatment of thickened sulphite liquors.Peer-reviewed article
K. ŠESTAUBER
Kvasny Prum. 1985; 31(9): 208-210 | DOI: 10.18832/kp1985054
A microbiological treatment of thickened sulphite liquors that were deprived of lime is described. The following microorganisms were used: Escherichia coli, Enterobacter agglomerans, Erwinia amylovora and Erwinia carotovora. Sulphite liquors contain a mixture of arabinose, xylose, mannose, galactose and glucose in 25 % w/w of the dry matter. Using the procedure, a lignosulphonan product with a low monosaccharides suitable especially for a production of the plastic ingredient for concretes and mortars with a cement binder can be obtained. An adapted procedure for the determination of monosaccharides in sulphite liquors using the GLC method...