Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Karel Štěrba"'
Publikováno v:
Kvasný průmysl, Vol 69, Iss 4, Pp 755-764 (2023)
The maturation of beer is an important production step with an impact on its quality. Changes in the chemical and sensory profile between 2 and 6 weeks of cold maturation were evaluated in pilot brews (200 l) of a pale lager of 11% and 15% original g
Externí odkaz:
https://doaj.org/article/2fbf312bac2940288176954278fb2cf8
Autor:
Alexandr Mikyška, Martin Slabý, Marie Jurková, Karel Štěrba, Vladimír Nesvadba, Jitka Charvátová
Publikováno v:
Kvasný průmysl, Vol 68, Iss 3+4, Pp 619-627 (2022)
Seven new Czech “flavour hop” varieties were tested in pilot brewing trials (50 l), in which samples of Ale-style beer were prepared using dry hopping. Essential oils in the beer were determined by fluidized-bed extraction combined with gas chrom
Externí odkaz:
https://doaj.org/article/d007b6808eec402eba6e0e7c0e2910c5
Autor:
Karel Štěrba, Lucie Kyselová
Publikováno v:
Kvasný průmysl, Vol 68, Iss 1, Pp 553-563 (2022)
Freshly produced beer is in a state of chemical imbalance and its sensory characteristics change and deteriorate over time. The period when beer resists these undesirable changes is referred to as its shelf stability, which is precisely defined from
Externí odkaz:
https://doaj.org/article/8427ebf885884a4d94128846441bd04c
Autor:
Alexandr Mikyška, Karel Štěrba
Publikováno v:
Foods, Vol 12, Iss 16, p 3111 (2023)
The main factor responsible for the sensory aging of beer is the increase in off-flavor aldehydes during beer storage. In pilot brews (200 L) of pale lager beer with different hopping regimes and wort boiling systems, 15 carbonyls were monitored usin
Externí odkaz:
https://doaj.org/article/7330bea88318407586b211b1fa26e5de
Publikováno v:
Kvasný průmysl, Vol 67, Iss 4, Pp 464-473 (2021)
Characterization of varietal profiles of hop secondary metabolites in beer is of considerable importance for hop growing and brewing. This three-year study focused on pilot brewing tests of three new Saaz derived hop varieties, namely Saaz Brilliant,
Externí odkaz:
https://doaj.org/article/c707d308229543c5b8114afcd8726ee1
Publikováno v:
Kvasný průmysl, Vol 67, Iss 2, Pp 417-427 (2021)
A new simultaneous method for determination of 16 heterocyclic compounds using SPE sample preparation and GC-MS determination was developed regarding increasing interest of the role of sensory active compounds in beer. LiChrolut® EN SPE columns prov
Externí odkaz:
https://doaj.org/article/54c92676637941eea9fdea5c47dc0758
Publikováno v:
Kvasný průmysl, Vol 67, Iss 1, Pp 409-416 (2021)
The specification of varietal profiles of secondary metabolites of hops in beer is rather important for hop growing and beer brewing. Chemical and sensory profiles of beers hopped with the varieties of Saaz Special and the traditional Saaz semiearly
Externí odkaz:
https://doaj.org/article/2d234733f3e44cd09abf51a0ba1984c0
Publikováno v:
Kvasný průmysl, Vol 66, Iss 4, Pp 307-313 (2020)
Freezing is a common way of storing samples including beer samples. To verify the suitability of this procedure, the results of determination of alcohol (% v/v), original gravity, color, pH, thiobarbituric acid index, total polyphenols, saccharides,
Externí odkaz:
https://doaj.org/article/f73f5e4191d64f4a9debe1f0ce1b8669
Publikováno v:
Kvasný průmysl, Vol 65, Iss 1, Pp 32-37 (2019)
Consumers are increasingly interested in the nutritional composition of food and beverages, including beer. Therefore, nutritional values of beer became an integral part of the beer label information. It specifies, in particular, the energy value sti
Externí odkaz:
https://doaj.org/article/5baaa4dfc37a47ceb0ee8cf32949f7bc
Publikováno v:
Kvasný průmysl, Vol 65, Iss 6, Pp 174–177-174–177 (2019)
Furan is considered to have a potential carcinogenic effect on human health. Its presence was found in a number of foods including beer. Thus, it is necessary to have a fast and routine method for its determination. This study describes a procedure m
Externí odkaz:
https://doaj.org/article/cde8d8d910cb47dc84dcbcd7415b6e43