Kvasny Prumysl, 2003 (vol. 49), issue 11-12
Qualitative and Economic Aspects of Ageing of Czech Hop Varieties.Peer-reviewed article
Karel KROFTA, Vladimír NESVADBA, Jana TICHÁ, Urban JAROSLAV, Jaroslav ČEPIČKA
Kvasny Prum. 2003; 49(11-12): 326-335 | DOI: 10.18832/kp2003020 
The dynamics of ageing processes in Czech hop varieties (Saazer, Sládek, Premiant, Agnus) was followed by long-term storage tests in the period since 2000 till 2002. Raw hops and pellets G 90 were storaged for 12 months in an air-conditioned and non-conditioned warehouse. Rate of ageing was analyticaly evaluated by a decline of bitter acid and hop oil contents, further by determination of hop storage index (HSI) and oxydative hop oils index (OIS). In the course of storage gradual decline of bitter acid contents was recorded in complience with expectations. The highest declines of alpha-bitter acids in raw hops were found in Agnus variety (80 %), the...
Barley Varieties Registered in the Slovak Republic in the Year 2003.Peer-reviewed article
Vratislav PSOTA, Marián SVORAD
Kvasny Prum. 2003; 49(11-12): 336-339 | DOI: 10.18832/kp2003021
In the year 2003 the following varieties were registered in the Slovak Republic: NITRAN (9), MESSINA (6), PASSADENA (6), PEDANT (7) and SALOON (6). Newly registered barleys have on the average a very good content of the extract in malt and strong activity of all followed groups of enzymes. The composition of wort is in the majority of cases on the optimum level.In the year 2003 the following varieties were registered in the Slovak Republic: NITRAN (9), MESSINA (6), PASSADENA (6), PEDANT (7) and SALOON (6). Newly registered barleys have on the average a very good content of the extract in malt and strong activity of all followed groups of enzymes. The...
Characterization of Bacterial Contamination in Beer by PCR Method.Peer-reviewed article
Jaroslav VOHÁNKA, Pavel DOSTÁLEK, Jaromír FIALA, Ida HOLLEROVÁ
Kvasny Prum. 2003; 49(11-12): 340-343 | DOI: 10.18832/kp2003022
PCR method for detection of the most frequent bacterial contamination in brewing industry - lactic acid bacteria was tested. Many different biochemical methods have been used for characterization of bacterial isolates genus Lactobacillus. Genomic DNA from 14 different strains of this genus was isolated and characteristic part of DNA was amplificated. All isolates were confirmed as Lactobacillus genus members by PCR methods. Isolates were not possible distinguish to the separate species.PCR method for detection of the most frequent bacterial contamination in brewing industry - lactic acid bacteria was tested. Many different biochemical methods have...
Biography of Konrád Dvorský, the breeder.Not peer-reviewed article
Konrád DVORSKÝ
Kvasny Prum. 2003; 49(11-12): 364-365 | DOI: 10.18832/kp2003023
In 2003, forty years passed from the death of Konrád Dvorský, an important Czech breeder. The editors managed to obtain a biography typewritten by this practitioner, researcher and pedagogue which he wrote at the end of his life. Thanks to kindness of a document owner, Ing. Peter Svačina, who is an author of the postscript at the end of the biography, we are able to bring it to our readers. To keep the authenticity and picture of the days when it was written, we present it in an original version without any editorial modifications and adjustments.(In Czech, English summary only)