Kvasny Prumysl, 1979 (vol. 25), issue 3
Changes in content of volatile compounds of beers prepared by using barley in the grist.Peer-reviewed article
J. MOŠTEK, J. ČEPIČKA, V. PEŘINA
Kvasny Prum. 1979; 25(3): 49-52 | DOI: 10.18832/kp1979007 
An article refers to the observation of effect of barley used in the grist without an adition of microbial enzymes on content and quality of volatile compounds of 10% light beers prepared by two mash decoction process. Increasing application of barley from 10 to 40% in the grist causes and increase in amount of total volatile compounds, high aliphatic alcohols and β-phenylacetic acid as well as esthers determined by gas chromatography.(In Czech, English summary only)
Factors determining the final attenuation degree. Part I. Rešerše. Part II. Experimental data.Peer-reviewed article
M. NENTWICHOVÁ, A. VRTĚLOVÁ
Kvasny Prum. 1979; 25(3): 52-55 | DOI: 10.18832/kp1979008
The first part of the study dealt with the information on the attenuation problem published in available literature. In the present 2-nd part the authoresses evaluate genetic effects resulting from the properties of individual varieties, effects of the protein content and malting technology upon the final attenuation degree of wort. Among several factors determining the attenuation degree are variety of barley, year of crop, region, where it was grown and malting technology. More intensive steeping and lower temperature of malting can be recommended, especially for treating barley with higher protein content. Kilning technology has marked effects,...
Wood hydrolyzate with synthetic ethanol as a medium for food yeast propagation.Peer-reviewed article
J. PELECHOVÁ, V. KRUMPHANZL, K. KADLEC, J. STANĚK, T. SOKOLOV
Kvasny Prum. 1979; 25(3): 56-64 | DOI: 10.18832/kp1979009
Experiments have been carried out with the cultivation of two kinds of yeast, viz. Candida utilis and mixture of Candida tropicalis + Candida scotii in appropriately prepared wood hydrolyzate containg in a certain percentage of synthetic ethanol. Composition of this substrate permits to balance the low and fluctuating carbon content in wood hydrolyzate. The fluctuation is caused by the presence of furfural produced in the course of acidic hydrolyze and can be balanced by adding synthetic ethanol, i.e. alcohol rich in carbon and not made from agricultural products. By adjusting the composition of wood hydrolyzate the stability...