Kvasny Prumysl, 1969 (vol. 15), issue 9
Effects of copper percentage in wort upon the formation of volatile sulphuric compounds.Peer-reviewed article
J. ©ROGL, J. VACKOVÁ, I. HLAVÁČEK
Kvasny Prum. 1969; 15(9): 193-195 | DOI: 10.18832/kp1969019 
The article is essentially abstract from the paper presented by the autor at the seminar of brewing and malting industries held at Plzeň in 1968. It deals with specific features of fermenting processes in the cellars of Prazdroj brewery which differ from condition in other Czechoslovak breweries, as far as the development of hydrogen sulphide is concerned. Owing to the present brewing technology and properties of equipment installed in the brewhouse the percentage of copper in sweet wort is apparently affected, which in its turn is reflected in hydrogen sulphide formation during the fermentation period.(In Czech, English summary only)
Assimilation of C10 - C13 n - alcanes by yeast.Peer-reviewed article
J. RYBÁŘOVÁ, A. ČEJKOVÁ
Kvasny Prum. 1969; 15(9): 196-199 | DOI: 10.18832/kp1969020
The mixture of n - alcanes consisting of n - decane, n - undecane, n - dodecane and n - tricedane has been used as a substrate for cultivating 40 selected strains of yeast. Five straines gave high yields of biological substance ranging from 60,8 to 64,8 %, nineteen strains produced from 50 to 59 %, whereas the rest failed to produce more than 20,3 - 48,7 %. The specified yields were compared with yields produced by the same strains cultivated in a hydrocarbon substrate containing higher hydrocarbons, viz. 97,5 % of n - alcanes of which 70 % were represented by C15 - C19 group. Using as a criterion the behaviour of various strains...
Technical and technological problems of gas firing in brewhouses.Peer-reviewed article
O. POPEL
Kvasny Prum. 1969; 15(9): 200-203 | DOI: 10.18832/kp1969021
The PRAZDROJ brewery at Plzeň is at present experimenting with gas fired coppers. Gas burners have been installed in one brewhouse without changing the furnaces of the coopers in question or their lining. The burners produce long, swirling flame. Papers presented recently at the seminar on modern brewing methods held at Plzeň evaluace advantages and disadvantages of straight firing and quote conclusions of several authors who have studied the problem.(In Czech, English summary only)