Kvasny Prumysl, 1986 (vol. 32), issue 2
Metals in malt. I. Sample preparations.Peer-reviewed article
V. KELLNER, P. ČEJKA, F. FRANTÍK
Kvasny Prum. 1986; 32(2): 26-29 | DOI: 10.18832/kp1986006 
The aim of this study was to find a simple and as far as possible also an universal method for sample preparations in the metal determination by atomic absorption spectrometry. A dry mineralization in the muffle furnace at 550 °Cand a mineralization in the HNO3-KClO4-H2SO4 (30:7:2) mixture at350 °C for the determination of Ca, Cu, Fe, K, Li, Mg, Mn, Na, Sr and Zn were used. The methods were compared from the standpoint of the results and their reproducibility. The following results were obtained: Non of the methods is suitable for the determination of Li. The dry mineralization has to be used for the determination...
Results of application of active dry wine yeast in Czechoslovak wine making.Peer-reviewed article
F. MALÍK, V. HACAJ, P. HANDZU©, A. DOBO©, G. VOJTEKOVÁ, A. ©«ASTNÝ, L. HRDNA
Kvasny Prum. 1986; 32(2): 29-33 | DOI: 10.18832/kp1986007
This paper deals with pilot-plant fermentation experiments of grape must and sparkling wine with preparation of active dry wine yeast in vintage 1984. The course and results of fermentations realized spontaneously and biologically by regulated fermentation in total volume 1400 hl, documented the advantage of the "pure" fermentation pathway. Most of the wines fermented with pure yeast cultures may be characterized by higher level of alcohol and lower concentration of volatile acid and acetaldehyde. Sensoric evaluations of test wines coming from seven wineries all in favour of wines fermented with active dry wine yeast preparations.(In Slovak, English...
Determination of volatile fatty acids in molasses.Peer-reviewed article
L. PROCHÁZKA, F. KVASNIČKA, A. ©TECHOVÁ
Kvasny Prum. 1986; 32(2): 33-36 | DOI: 10.18832/kp1986008
An analysis of possible inhibitors in molasses has to be made since the fermentation of molasses is affected by the quality of its non saccharide compounds. The method of the capillary isotachophoresis was used to determine the quantity of the individual volatile fatty acids. The individual acids were determined after their separation by the steam distillation. The method was modified for the direct determination of formic and acetic acids only after the dilution of molasses with water. The results shoved that the level of formic acid in the domestic molasses is about 0.1 % W/W (1000 mg . kg-1) higher than that in the foreign ones.(In...
Biotechnological employment of plant and animal cell.Peer-reviewed article
V. JIRKŮ, G. BASAŘOVÁ
Kvasny Prum. 1986; 32(2): 37-41 | DOI: 10.18832/kp1986009
This review article deals with significant topics which are the basis of the industrial employment of single cell culture of plant cells and culture of animal cells. Current demands and problems are also covered here.(In Czech, English summary only)