Kvasny Prumysl, 1978 (vol. 24), issue 5
Theoretical Fundamentals of an Instrument for Measuring Pasteurization Effects.Peer-reviewed article
J. ŠAVEL
Kvasny Prum. 1978; 24(5): 99-102 | DOI: 10.18832/kp1978015 
The article deals with the conditions, under which a process or reaction depending on temperature can be observed and evaluated by observing and appropriately selected quantity, which is easy to follow and depends also on the temperature. Activation energies of the studied and reference reactions must be roughly the same. The author introduces and defines special units indicating the stage of the reaction or process against different temperatures and time intervals. Pasteurization units are taken as an example. The calculated activation energy of pasteurization is Ep = 287,6 kJ mol-1. For evaluation of...
Removing Volatile Compounds from Sulphite Waste Liquor Used for Making Feed Yeast.Peer-reviewed article
M. ŠESTÁKOVÁ, F. ŠTROS
Kvasny Prum. 1978; 24(5): 103-106 | DOI: 10.18832/kp1978016
A simple laboratory distilling apparatus has been employed to study the decrease of SO2 , formic acid and acetic acid amounts in three samples of sulphite waste liquor, caused by water steam passing through them. The most pronounced decrease was achieved with steam amounts up to 5g. An average rediction of the SO2 concentracion was 25-30%. The figure for acetic acid in Na-bisulphite waste liquor was reduced by 76,2%, in Ca- and Mg bisulphite waste liquors by 71,6 and 79,0%, respectively. Since in Na-bisulphite waste liquor the proportion of SO2 is high and liquor also contains from 3 to 5,5 g.l-1 of acetic...
Cultivation of Candida utilis Yeast on Ethanol Substrate. Part I. Balances of Some Elements and Trace Elements Present in Cultures Grown in Batch-type Cultivation.Peer-reviewed article
J. RYBÁŘOVÁ, L. ADÁMEK, K. PECKA
Kvasny Prum. 1978; 24(5): 106-111 | DOI: 10.18832/kp1978017
The yield of dry matter produced by Candida utilis cultivated in synthetic ethanol can be increased under batch cultivation conditions by adding molasses distillation residue. In aseries of experiments addition of1,42 gof residue per1 literof medium raised the yield of dry matter by 6,4%. A number of experiments have been carried out to study the effects of inorganic components of residue especially some elements upon the yeast propagation. Present elements have been identified by applying atomic absorption spectrometry methods. As compared with the reference medium the enriched one contained more sodium, iron, manganese, aluminium, calcium and potassium...