Kvasny Prumysl, 2015 (vol. 61), issue 9
Classification of barley varieties for "České pivo" using discriminant analysisPeer-reviewed article
Tibor SEDLÁČEK, Vratislav PSOTA
Kvasny Prum. 2015; 61(9): 262-267 | DOI: 10.18832/kp2015024 
Awarding of the Protected Geographical Indication "České pivo" (i.e. Czech Beer) led to the necessity of targeted breeding of barley varieties. This study investigated the effect of varieties and growing sites on the key indicators of malting quality with the aim to identify the most suitable selection criteria. Relative extract at 45 °C, β-glucan content in wort, and Kolbach Index were identified as the most suitable parameters. As these parameters are also significantly affected by the environment and residual influences, a classification function using discriminant analysis was developed. The function classified successfully 94% of samples...
Determination of Rebaudioside A in Mixed beer, Beer-based Beverages and LemonadesPeer-reviewed article
Marie JURKOVÁ, Jana OL©OVSKÁ
Kvasny Prum. 2015; 61(9): 262-267 | DOI: 10.18832/kp2015025
The plant Stevia rebaudiana (Stevia sweet) is becoming a favourite sweetener in the food industry. Sweet taste is caused by diterpenic glycosides, so-called steviol glycosides, which lack calories while being 300 times sweeter than sucrose. While all the other glycosides are slightly or even disagreeably bitter, rebaudioside A possesses desirable sensorial properties. Because this sweetener is used to sweeten beverages including mixed beer, a fast routine analytical method was developed using HPLC with UV detection for determination of rebaudioside A in mixed beer and lemonade. The HILIC principle, which is suitable for separation of polar and hydrophilic...
From other journalsNot peer-reviewed article
Alexandr MIKY©KA
Kvasny Prum. 2015; 61(9): 268-272
Abstracts of papers from scientifical and professional journals (In Czech).