Kvasny Prumysl, 1987 (vol. 33), issue 1
Technological possibilities affecting beer foaming. Part I. Physico-chemical factors affecting foaming and methods for foaming evaluation.Peer-reviewed article
P. «OPKA, P. ČEJKA
Kvasny Prum. 1987; 33(1): 3-6 | DOI: 10.18832/kp1987001 
A brief elucidation of the physico-chemical factors affecting foaming and foam stability is given in this first part. Also the main groups of foam supporting compounds and foam inhibitors are mentioned. Analytical methods used for foaming evaluation are discussed.(In Czech, English summary only)
Effect of K-content in soil on the quality of brewing barley.Peer-reviewed article
K. KOSAŘ
Kvasny Prum. 1987; 33(1): 6-7 | DOI: 10.18832/kp1987002
The increased K- content in the soil has negative effect on the quality of brewing barley. The levels of search in barley and malt extract decreased and the protein level of barley and amlt increased with increasing K-content on the group of 24 samples. The optimum K-concentration in the soil (with respect to the brewing barley quality) depends on the variety of barley and its growing district and therefore it cannot be unambiguously determined.(In Czech, English summary only)
Alcohol analysis using gas chromatography.Peer-reviewed article
L. PROCHÁZKA, J. ČULÍK
Kvasny Prum. 1987; 33(1): 7-10 | DOI: 10.18832/kp1987003
The determination of organic contaminants in alcohol was tested using gas chromatography. S possible application of the GLC method (the packing material was Carbowax 20M) and the GSC method (with Porapack and Separon) was performed on the gas chromatograph CHROM 5. The best separation efficiency, sensitivity and low detection limit of compounds tested was achieved with Separon CHN. The optimum conditions for the analysis were found. The level of the individual contaminants can be quantitatively determined up 1 mg . l-1. Alcohol from the fermentation usually contains about 7-10 mg of methanol per litre. The quantitative determination of acetaldehyde...
New results in research of irrigation by waste waters from distilleries and yeast factories.Peer-reviewed article
K. STEHLÍK
Kvasny Prum. 1987; 33(1): 11-13 | DOI: 10.18832/kp1987004
Results of germination tests and grow the experiments proved a possibility of the following applications of waste waters for the irrigation: a) mixed waste waters from agricultural distilleries after separation and other utilization of distillery slops in an annual quantity up to 100-150 mm; b) waste waters from industrial distilleries after separation and other utilization of distillery slops and about ten times dilution (with respect to high contents of K, N and Na); c) waste waters from yeast factories in the dilution of 1 : 2 or 1 : 5 ina quantity of Mz up to100 mm (with respect to the deficiency of P, Ca and Mg). To make possible the...
Possible biological waste water treatment from wine-making.Peer-reviewed article
A. KINTLEROVÁ, A. RŮ®IČKOVÁ
Kvasny Prum. 1987; 33(1): 13-19 | DOI: 10.18832/kp1987005
The waste water quantity as well as its pollution level changes during the time and both the parameters depend on the production capacity of the factory. The main factor of the pollution is the level of dissolved organic compounds. Therefore, the authors studied a possibility of the biological degradation of these organic compounds. The results showed that the organic compounds of these waste waters can be decomposed in a one-stage biological waste waters can be decomposed ina one-stage biological waste water treatment plant.(In Slovak, English summary only)
Bioreactors. I. Classification of reactors.Peer-reviewed article
J. PÁCA
Kvasny Prum. 1987; 33(1): 20-21 | DOI: 10.18832/kp1987006
A brief introduction into the equipment of bioreactors together with their classification is described in the article.(In Czech, English summary only)