Kvasny Prumysl, 2016 (vol. 62), issue 4
Summary Evaluation of Czech Hops Harvested in 2015. Part I: Contents of α- and β-Bitter AcidsPeer-reviewed article
Alexandr MIKY©KA, Marie JURKOVÁ
Kvasny Prum. 2016; 62(4): 118-127 | DOI: 10.18832/kp2016016 
The contents of α- and β- bitter acids from hops harvested in the Czech Republic in 2015 have been evaluated. Samples originated from all growing areas - ®atec, Ú¹tìk and Tr¹ice (77.4 %, 10.8% and 11.9% of the hop garden areas in the Czech Republic). The tested varieties, Saaz (®PÈ), Sládek, Premiant, Agnus, Kazbek and Saaz Late were cultivated on 87.4%, 5.8%, 3.9%, 0.8%, 0.4 and 0.7 of the harvest areas respectively. Samples were analyzed in accordance with the Analytica EBC, method 7.7 (HPLC), all results are given in weight % in dry matter. The average value of α-bitter acids in the Saaz hops (2,15%) was 0.81% (27.4% rel.) and 1.41%...
Gushing Induced by Colloidal hazePeer-reviewed article
Jan ©AVEL, Petr KO©IN, Adam BRO®
Kvasny Prum. 2016; 62(4): 128-134 | DOI: 10.18832/kp2016017
The tendency to beer gushing can be determined by measuring the pressure growth in the head space after piercing the bottle crown and closing this puncture again. The important parameter is the initial value of the rate of pressure growth (kPa/min), or a pressure value reached after 1 min after crown puncture resealing which is called PG1. Beer value PG1 > 50 kPa is considered to be typical for starting gushing while value above 120 kPa is associated with strong ejection or overflowing beer from the bottle. Gushing could be also induced in beers which showed no gushing even after long periods of...
Working Brigades, Hops Harvests and Hops Production in Czechoslovakia in 1945-1970Peer-reviewed article
Jiøí VERNER
Kvasny Prum. 2016; 62(4): 135-138 | DOI: 10.18832/kp2016018
This article is an introduction of hops harvest working brigade phenomena. In Czechoslovakia there were thousands and thousands of youth who every year worked in hop-gardens. In the paper we can found an answer to question why and how the Czechoslovakian authorities organized such a complicated business. This topic is also focused on several questions about Czech hops production in history. Der Artikel ist eine Einleitung in die Problematik des damaligen Phänomens in der tschechischen Hopfengeschichte, was die Hopfenbrigaden gewesen waren und an denen in der 2. Hälfte des 20. Jahrhunderts zehntausende (nicht nur) jungen Leuten teilgenommen worden waren....