Kvasny Prumysl, 1999 (vol. 45), issue 1
Determination of sensory active alcohols in beer by solid-state extraction and capillary gas chromatography.Peer-reviewed article
J. ČULÍK, K. FIGALLA, T. HORÁK, V. KELLNER
Kvasny Prum. 1999; 45(1): 4-7 | DOI: 10.18832/kp1999001 
In the range of works dealing with study of the role of yeast strain during production of sensory active higher alcohol in beer, was elaborated and validated the method which enables, on concentration of methods published formely, simultaneous determination of guaiacol, 2-phenylethanol, tyrosol and tryptophol in wort and beer. Higher aromatic alcohols were extracted from beer using solid-state extraction. With regards to elutive properties, non-toxicity and easy handling, the ethylacetate was choosen. Although from analytical point of view LiChrolut EN column gave the best results, LiChrolut RP-18 column was choosen due to moderate prince. Compounds...
Decreasing of sludge content by hot wort flotation in whirpool-tank.Peer-reviewed article
R. GOLDMANN, J. DOSTÁL
Kvasny Prum. 1999; 45(1): 7-9 | DOI: 10.18832/kp1999002
The series of measuring proved, that using hot wort flotation by carbon dioxide is possible to decrease the content of fine sludge, depending on the quality of boiled wort, by 50% of original contents. Efficiency of flotation increases for worts brewed from the malts of less quality. If the quality of malt is stabilized, it is possible to obtain the fine sludge content of 10% wort 65-85 mg/l even in older machinery (lauter tun ZVU from 1967). It makes possible to fill CKT up to 86% without antifoam agent addition. At higher filing of CKT, the temperature during primary fermentation should not exceed 12 °C.The series of measuring proved, that using...