Kvasny Prumysl, 2013 (vol. 59), issue 1
The Czech hop hybrid variety - Part I.Peer-reviewed article
Karel KROFTA, Josef PATZAK, Vladimír NESVADBA, Alexandr MIKYŠKA, Martin SLABÝ, Pavel ČEJKA
Kvasny Prum. 2013; 59(1): 2-13 | DOI: 10.18832/kp2013001 
The Vital hop variety was first registered in 2008. Vital is genetically most related to Agnus, another Czech variety. The yield potential is 2.0 to 2.5 t/ha. With respect to its content of α-bitter acids of 10 to 15 % it belongs to the bitter cultivars. Both, the contents of β-bitter acids, in the range of 6 to 10 % and the total hop oils of 1.5 to 2.5 % are high. The contents of farnesene and humulene of up to 5 % rel. are characteristic for the hop oils compositions. The content of selinene was 7 to 15 % rel. The most significant characteristic of the variety is the high content of desmethylxanthohumol (DMX). DMX is precursor of 8-prenylnaringenin,...
Quality of winter barley grain from the testing localities in the Czech Republic, harvest 2011.Peer-reviewed article
Lenka SACHAMBULA, Vratislav PSOTA, Olga DVOŘÁČKOVÁ
Kvasny Prum. 2013; 59(1): 14-18 | DOI: 10.18832/kp2013002
Samples of two studied winter barley varieties from 13 testing localities were analyzed according to the standard ČSN 461100-5. Favorable weather in 2011 affected contents of nitrogenous substances (11.2 %) and starch (64.7 %) in winter barley caryopses. The occurrence of sprouted grains was small and the amount of damaged grains was low. Grain harvested in 2011 was larger and of the same size. Sieving fractions over 2.5 mm were on average 95.3 % in winter barley. The year 2011 was favorable in terms of barley grain quality. The occurrence of admixtures was adequate and it was formed mainly by the admixtures partly usable for malting (grains without...
Evidence of Medieval malting production at Rabí Castle.Peer-reviewed article
Linda FOSTER, Petr KOČÁR, Romana KOČÁROVÁ
Kvasny Prum. 2013; 59(1): 19-26 | DOI: 10.18832/kp2013003
The article informs about a 15th century malt house at Rabí castle (Horažďovice distr.), where remains of a malt oven were found during archaeological excavation instigated by remedial work in 2010. Flotation of a sample taken from the fireplace fill yielded an assemblage of carbonised macroremains. Archaeobotanical analysis identified prevailing number of germinated common many-row barley (Hordeum vulgare subsp. vulgare), which allows the interpretation of the sample as malt. Anthracological analysis reconstructed the sorts of the fuel timber. Also an overview of current archaeological finds of malt in Bohemia is given in wider European context. So...