Kvasny Prumysl, 2009 (vol. 55), issue 5
Chemical cleaning of ceramic membranes used for stillage filtration.Peer-reviewed article
Kateřina LAPIŠOVÁ, Karel MELZOCH
Kvasny Prum. 2009; 55(5): 119-121 | DOI: 10.18832/kp2009011 
The main concern of this work was to find the effective membrane regeneration scheme to obtain the initial water flux of the ceramic membranes that were fouled by distillery stillage. The foulants include mainly polysaccharides, proteins, low molecular compounds and salts. The use of different cleaning strategies, temperatures, regeneration time and chemical agents with different concentrations (NaOH, H2O2, EDTA, HNO3), was realized with the aim of getting the biggest possible flux recovery. Two different cleaning strategies were experimented: inside the module by recirculation of cleaning solution or outside the module...
Effect of exogenous factors on malt quality.Peer-reviewed article
Josef PROKEŠ, Helena FIŠEROVÁ, Alena HELÁNOVÁ, Jiří HARTMANN
Kvasny Prum. 2009; 55(5): 122-126 | DOI: 10.18832/kp2009012
The aim of this study was to test effects of steeping technology, water content and the length of germination period on the quality of malt under conditions of a changing composition of gas present in a layer of germinating kernels of spring barley (hereinafter mentioned as "intergrain gas"). Targeted changes in its composition enable to simulate individual (potential) technologies of malting. This enabled to use the technology of floor malting with a minimum ventilation and exchange of intergrain gas. Further the technology of germination in a modified atmosphere (i.e. with changing concentrations of ethylene) and that of continuous ventilation during...
Agronomic parameters and characteristics of old barley varieties under the conditions of the forage production area, harvest 2008.Peer-reviewed article
Jitka MAREČKOVÁ, Vratislav PSOTA
Kvasny Prum. 2009; 55(5): 127-131 | DOI: 10.18832/kp2009013
In 2008 old barley varieties were grown in one location in the forage production area under the same conditions as the current standard varieties. Most of the old varieties reached full maturity even 18 days earlier than the standard ones. The standard varieties had higher number of productive stalks per m2 and approximately by 1 t/ha higher yield of grain. On average the old varieties were higher by 26 cm. TGW lower than 43 g was in the caryopses without husks and also in many old varieties. The hulled standard varieties but also some of the old varieties had high TGW. The standard varieties showed higher resistance to Blumeria graminis...