Kvasny Prumysl, 2014 (vol. 60), issue 7-8
Beer and Health.Peer-reviewed article
Jana OL©OVSKÁ, Dagmar MATOULKOVÁ, Pavel ČEJKA, Marie JURKOVÁ
Kvasny Prum. 2014; 60(7-8): 174-181 | DOI: 10.18832/kp2014017 
Beer is indisputably a healthy beverage. Its consumption brings to the consumer many benefits, especially refreshment and relaxation. Beer has a positive effect on digestion, and is a source of essential nutrients and micronutrients. Based on monitoring the Czech beer market network involving beer from large, medium and restaurant breweries, a new study was performed on the content of health-positive substances in beer. It was confirmed that Czech beer contains, among others, a significant concentration of B vitamins and some important phytoestrogens. The study also monitors the content of potentially adverse substances, i.e. substances which are toxic...
Surface characteristics and taxonomy of brewing yeasts.Peer-reviewed article
Jana KOPECKÁ, Dagmar MATOULKOVÁ, Miroslav NĚMEC
Kvasny Prum. 2014; 60(7-8): 182-190 | DOI: 10.18832/kp2014018
This study deals with the taxonomy of brewing yeasts, methods of their classification and identification. The hybrid character of brewing yeasts is highlighted, along with related problems in their classification. Molecular biology methods mostly used for the classification of brewing yeasts focus on the differences in chromosomal and mitochondrial DNA, i.e. genotyping. Polyphasic taxonomy of yeasts is based on a combination of genotypic, phenotypic and chemotaxonomic methods. An important feature of brewing yeasts is their cell surface characteristics, which could strongly affect yeast flocculation. The terms "flocculation" and "hydrophobicity" are...
Summary Evaluation of bitter acids and polyphenols content in Czech hops harvest in 2013 - I: Contents of α- and β-Bitter Acids.Peer-reviewed article
Alexandr MIKY©KA, Marie JURKOVÁ
Kvasny Prum. 2014; 60(7-8): 191-197 | DOI: 10.18832/kp2014019
The contents of polyphenolic compounds and the antioxidative properties of the important Czech hop varieties Saaz, Sladek, Premiant and Agnus were evaluated in selected samples (24, 12, 12 and 4). The hops were extracted with a water/acetone solution, and then analyzed. The results were compared with those from hops harvested in 2011 and 2012. The content of total polyphenols (TP), which are important in terms of the Protected Geographical Indication (PGI) as well as the contents of anthocyanogens and flavonoids are dependent on the variety. The highest content was found in the Saaz variety and the lowest in the Sladek variety. The ratios of TP to...
Ice making in Brno - History of Jundrov Ice-Houses. Part 1: From the ice-houses foundation till 1918.Peer-reviewed article
Filip VRÁNA
Kvasny Prum. 2014; 60(7-8): 198-202 | DOI: 10.18832/kp2014020
Publication is the first of a three-part history study of ice-houses in Jundrov, Brno. It summarizes the origin of the largest commercial ice-houses in the second biggest town in Czechoslovakia. From the end of the 19th century to the origin of Czechoslovakia the icehouses were in property of several owners. Among others, they were owned by Julius Brauner who ran Brno's brewery in Pekařská Street. Till the 1910 three wooden ice -houses were built; they supplied Brno's pubs, butchers, breweries and confectioners. The first part of the publication also deals in detail with brewing technologies, first of all invention of artificial cooling. The author...