Kvasny Prumysl, 1990 (vol. 36), issue 10-11
Determination of glucoamylase activity using the tablet S-Test Glucoamylase.Peer-reviewed article
V. MONCOĽOVÁ, J. ZEMEK
Kvasny Prum. 1990; 36(10-11): 289-292 | DOI: 10.18832/kp1990033 
The tablet S-test Glucoamylase was routinely used for the determination of glucoamylase activity in the enzyme preparate Brew-N-Zyme L-300. As the comparative methods the glucose determination after enzyme hydrolysis of soluble starch using Bio-la-test and the methods with 3,5-dinitrosalicylic acid were used. For the glucoamylase activity of 9,08 mkat.l-1 the value of a variation coefficient was vk = 3,6 %.(In Slovak, English summary only)
Some aspects affecting steeping technology. IV. Effect of classical and modern steeping procedure on activity of growth factors.Peer-reviewed article
K. KOSAŘ, V. PSOTA, H. VÍTKOVÁ, Š KLÍČOVÁ
Kvasny Prum. 1990; 36(10-11): 293-296 | DOI: 10.18832/kp1990034
As found from many experiments with aerobic and anaerobic steeping it is better to use long steeping beneath the water that permits to achieve higher malting yields and higher extract yields. The aerobic steeping is necessary for malting in a time of the ripening after the barley gathering. Aerobic conditions of steeping result in the higher activity of endogenous gibberelins and partially higher content of β-indolyl-acetic acid while anaerobic conditions increase the activity of endogenous cytokinins and maintain higher content of inhibiting compounds (in the first phases of malting).(In Czech, English summary only)
Present state of production of brewing barley in Czechoslovakia..Peer-reviewed article
J. LEKEŠ
Kvasny Prum. 1990; 36(10-11): 296-300 | DOI: 10.18832/kp1990035
Present problems in the production of brewing barley inCzechoslovakiaare described. To achieve the desired quality of the brewing barley production it is necessary to keep field areas for its growth in traditional regions, i.e. in the regions for beet or partially better potatoes cultivations. In a future, it would be necessary to achieve the brewing barley cultivation on about 20 % of the field areas in traditional regions. The solution of this problem depends on the economic relations between producers, trade organizations and users.(In Czech, English summary only)
Improvement of wine-making yeasts. IV. Selection and properties of killer strains.Peer-reviewed article
S. MICHALČÁKOVÁ, E. ŠTURDÍK, P. SULO
Kvasny Prum. 1990; 36(10-11): 301-304 | DOI: 10.18832/kp1990036
From 63 wine-making yeast strains of Saccharomyces (from the collection) five strains produced killer toxins being stable and having suitable pH values for the suppression of Zygosaccharomyces yeasts that belong among apprehensive contaminants of bottled wines. The genetic determinants coding the killer toxins were studied with the aim to transfer the killer properties into industrial strains of wine-making yeasts.(In Slovak, English summary only)
Fractionation of yeast biomass. V. Production and application of invertase.Peer-reviewed article
R. KOLLÁR, E. ŠTURDÍK, M. GALKOVÁ, S. GOČOVÁ
Kvasny Prum. 1990; 36(10-11): 304-308 | DOI: 10.18832/kp1990037
The isolation procedure of invertase from the supernatant fraction of autolysate was developed. The procedure also permits to obtain yeast extract, nucleotides, ergosterol, phospholipids, cell walls and glucans. The preparate of invertase has been tested in a confectionary, in a preparation of glucose-fructose syrup for bewerages and a bee-keeping as well as for a construction of the enzyme thermistor for the saccharose determination.(In Slovak, English summary only)
Application of crude invertase preparate in beverage industry..Peer-reviewed article
J. KOVÁČ, R. MIKONY
Kvasny Prum. 1990; 36(10-11): 309-313 | DOI: 10.18832/kp1990038
A crude invertase preparate was used for the enzyme conversion of saccharose. The enzyme preparate was obtained from the biomass of Saccharomyces cerevisiae (baker's yeast) in the process of induced autolysis. Further the enzyme was purified using usual procedures. The rate of inversion in a concentrated grape cider was compared with the rate of acid hydrolysis. The results showed that the invertase preparate is applicable for the saccharose inversion in concentrated ciders in a large range of the saccharose concentrations. A positive effect of the temperature on the enzyme efficiency has been observed. The content of acids affects the rate of acid...
Contribution to the problems of the structure of microbiological databases.Peer-reviewed article
R. BUREŠ
Kvasny Prum. 1990; 36(10-11): 314-329 | DOI: 10.18832/kp1990039
The article describes various systems of the categorization of information about microorganisms stored in culture collections (MINE, MiCIS, COMECON) a discusses possibility of their utilization for collection and user oriented information systems.(In Czech, English summary only)