Kvasny Prumysl, 1962 (vol. 8), issue 6


Brewing barley competition in 1961, its results and their evaluation.Peer-reviewed article

M. KOPECKÝ

Kvasny Prum. 1962; 8(6): 121-126 | DOI: 10.18832/kp1962019  

The article deals with the results of the brewing barley competition and evaluates the results achieved in 1961, applying both agricultural and chemical criteria and taking therefore in consideration the composition of various sorts as an important factor. The author underlines the advantages of Czechoslovak varieties, enjoying excellent reputation with brewers, and shows, how the competition contributes to higher yields and better quality of barley. Districts taking part in the competition have generally substantially better results than abstaining ones.(In Czech, English summary only)

Experiments with beer pasteurization by ionization irradiation.Peer-reviewed article

V. PREININGER

Kvasny Prum. 1962; 8(6): 127-131 | DOI: 10.18832/kp1962020  

Experiments have been made with 10˚ pale beer to find out possibilities of pasteurization by irradiation. Samples of beer were treated in a reactor as well as in the GAMMACELL chamber using cobalt as a source of radiation. The results indicate that small doses causing no undesirable organoleptic changes could not secure efficient pasteurization and fail therefore to improve the storage properties of beer. Higher doses spoil aroma, taste and colour. The ahrmful effect of gammairradiation can be partly neutralized by introducing into beer some reducing substances.(In Czech, English summary only)

Manufacturing baker9s yeast by using the first generation yeast of the propagation stage for initial charges of accelerated production stage.Peer-reviewed article

E. PÍŠ

Kvasny Prum. 1962; 8(6): 135-136 | DOI: 10.18832/kp1962021  

The author suggests some important changes of the conventional scheme of generative fermentation. He recommends to shorten the duration of the propagation stages by increasing the yield of the first generation. The second generation should be eliminated by extending the first generation stage, the later phase of which proceeds in prefermented medium in a special vat of 20 m3 capacity. By introducing the described scheme the time required for the generative fermentation could be reduced from 86 to 53 hours.(In Slovak, English summary only)