Kvasny Prumysl, 1978 (vol. 24), issue 8
Evaluating Drinking Quality of Beer.Peer-reviewed article
J. CUŘÍN
Kvasny Prum. 1978; 24(8): 169-172 | DOI: 10.18832/kp1978028 
Beer as a low-alcoholic beverage has two different functions. It supplies human organism with necessary amount of water and - being very popular in all classes of population - plays also a certain role in the social life. Its drinking quality cannot be evaluated correctly by accepting as a criterion only its popularity, because other aspects are important too. The author has elaborated and applied with satisfactory results an evaluating method based on sensorial effects rasulting from the consumption of a limited amount of beer.(In Czech, English summary only)
Calculating Heat and Air Consumption in Malt Drying Kilns Using Combustion.Peer-reviewed article
T. LEJSEK
Kvasny Prum. 1978; 24(8): 172-175 | DOI: 10.18832/kp1978029
To calculate heat and air consumption in a malt drying kiln, using combustion products of natural gas, it is necessary to know the enthalpy and specific humidity of combustion products. If these two data are available, it is easy to determine consumption froom a i-x diagram of humid air. Sometimes it may be difficult to specify the state of the air + combustion products mixture because of insufficient range of the available i-x diagram. In such a case the solution is obtainable from two equations - the equation of the isotherm and the equation of the straight line connecting points determining the state of combustion products and air. From an example...
Ways to Higher Yields of High Quality Alcohol and to Optimation of Refining Process. Part I.Peer-reviewed article
J. ROSÁK, A. VÁVROVÁ, V. KRUMPHANZL
Kvasny Prum. 1978; 24(8): 175-180 | DOI: 10.18832/kp1978030
The authors characterize the properties of principal impurities present in alcohol produced by fermantation, using as a criterion the relation between the volatility of individual component and ethanol concentracion. Computer-assisted calculation provided nacessary data for diagrams covering several groups of chemical compounds (alcohols, esters, aldehydes and ketones ). The results of the research works will help to improve the efficiency of installations in distillerie.(In Czech, English summary only)
Effect of Surfactant and Viscosity on Oxygen Transfer Rate in a Pilot Plant Fermenter.Peer-reviewed article
J. PÁCA, P. ETTLER, V. GRÉGR
Kvasny Prum. 1978; 24(8): 181-184 | DOI: 10.18832/kp1978031
The changes o oxygen transfer rates into simulated and actual inoculation and production media used for erythromycin biosynthesis were measured. In the fermentative production of erythromycin sperm whale oil is used both as an antifoan agent and a partial carbon source. The results showed that the presence of sperm whale oil causes a drop in the oxygen transfer rate about 50 -60 %. From comparison of the results obtained in simulated and actual media it was found that the value KLα is significantly influenced also bythe other physico-chemical parameters which affect diameter of bubles, their coalescence and gas holdup. Therefore,...