Kvasny Prumysl, 1978 (vol. 24), issue 10
Polyphenolic Substances and Some Problems of Substituting Malt with Unmalted Barley.Peer-reviewed article
J. CUŘÍN, V. ČERNOHORSKÝ
Kvasny Prum. 1978; 24(10): 217-220 | DOI: 10.18832/kp1978036 
The authors have studied the effects of unmalted barley, used as a partial substitute of malt, upon the concetration of polyphenolic substances in brewing semiproducts and beer. Unmalted barley was of the same variety as used for preparing malt. Substitution reduces the concentration both of polyphenolic substances and anthocyanogenes leaving the polymerization index practically unchanged. Wet grinding of unmalted barley increased the overall deficit of polyphenolic substances and also raised slightly the polymerization index.(In Czech, English summary only)
Modern Applicacions of Hop Resins.Peer-reviewed article
J. ČEPIČKA
Kvasny Prum. 1978; 24(10): 221-223 | DOI: 10.18832/kp1978037
Modern applications of hop resins in a brewing process comparing with a classical technology are reviewed. The suitability of new types of hop extracts, synthetic hop resins ant the other hop preparates for their use in the technological process are mentioned. Chemical treatements of native hop resins which increase their efficiency and some economical standpoints are discussed.(In Czech, English summary only)
Cultivation of Candida utilis Yeast in Ethanol Substrate. Part III. Stimulating Effects of Ashes of Molasses Residue.Peer-reviewed article
J. RYBÁŘOVÁ, K. PECKA
Kvasny Prum. 1978; 24(10): 224-231 | DOI: 10.18832/kp1978038
By dividing the ashes of molasses residue into two parts, viz. one consisting of soluble components and the other of insoluble ones, two groups of elements has been separated each of which has different effects upon Candida utilis yeast cultivated in ethanol substrate. Soluble ashes, where K and Na prevail, have negative effects, whereas insoluble ones containing mainly Ca, Mg, Fe, Zn, Cu, Mn and Al improve markedly the yields of yeast. Detailed experiments and tests carried out with mentioned elements disclose some relationship between the presence of some of them and yields. The most favourable combination is Ca + Mg + Fe. It has been also established...
Improving the Quality of Distilates.Peer-reviewed article
J. TAMCHYNA
Kvasny Prum. 1978; 24(10): 232-234 | DOI: 10.18832/kp1978039
The article deals with a news installation, which has been developed for final treatment of distillates giving them fine tastes. It is essentially a five-stage, throughflow, continuous plant with glass vessels of50 ltotal capacity. The results achieved with the plant confirm its general-purpose character. Its principal advantage is a marked reduction from losses due to the prevention of evaporation from vessels made impermeable and inert material, and also reduction to 6-7 months of time required to accomplish the process.(In Slovak, English summary only)