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Determination of zearalenone in malting barley
Wawroszová, Simona ; Čumová,, Martina (referee) ; Běláková, Sylvie (advisor)
This bachelor thesis deals with monitoring of zearalenone content in malting barley using immunochemical method ELISA and consequently method of liquid chromatography with mass spectrometry (LC-MS/MS). Theoretical part describes the brewing raw materials and important toxinogenic filamentous fungi. Special attention was drawn to selected fusarium mycotoxins (fumonisins, trichothecenes, zearalenone). It also describes some methods for determination of mycotoxins. Experimental section describes analyze 90 samples of malting barley of different varieties using method ELISA. In 19 samples zearalenone concentration was higher than limit of quantification. The highest level of zearalenone concentration (39,2 g•kg-1) contained barley, variety Wintmalt, where corn was used as a fore-crop. The samples were subsequently analyzed by LC-MS/MS. Zearalenone concentration was higher than limit of quantification only in four samples, namely in samples of Blaník, Malz and Wintmalt varieties of barley. Furthermore, the samples of intermediate products of malting process were analyzed by LC-MS/MS. No sample showed level of zearalenone higher than limit of quantification.
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Changeof phenolic acids content during malting of spring barley
Štýblová, Romana ; Janoušková, Eva (referee) ; Běláková, Sylvie (advisor)
This bachelor thesis deals with detection of chosen phenolic acids (sinapic acid, caffeic acid, ferulic acid, syringic acid, p – hydroxybenzoic acid, vanillic acid and p – coumaric acid) in the malting barley and monitoring of their changes during making a malt in real enviroment of floor malt house. Tehoretical part describes individual phenolic acids, their presentation in raw material for making of malt and methods for determination . There is described technology of making a malt. The nine samples was taken in experimental part. There were a malting barley, intermediate products of malting, malt and rootlets. Phenolic acids were extracted by alkaline and acid hydrolysis. This samples were detected by Ultra high – performance liquid chromatography using of UV detection (UPLC/PDA).
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The malting barley breeding and growing in the Czech Republic
PANSKÁ, Terezie
The breeding and cultivation of malting barley has an irreplaceable role in the Czech Republic. Malting barley is bred and grown mainly to produce quality grain, which is a key commodity to produce domestic beer. Increasing demands are placed on the quality and yield of malting grain, due to the rising level of "Czech beer ". The aim of this bachelor thesis is to evaluate the quality of malting barley in the Czech Republic in 2010-202. Further collect and evaluate knowledge about breed-ing and malting barley cultivation in the Czech Republic. The work is created in the form of a literature search and monitoring results of ÚKZÚZ and the Czech Statistical Office for the period. The first part of the litera-ture search is focused on the breeding of barley and the development of new varie-ties, so to ensure a genetic influence on the resulting quality and yield of the leading grain of malting barley. Subsequent cultivation includes a description of the devel-opment of technologies that also contribute to the quality and yield of final produc-tion. The final part of the bachelor's thesis is devoted to a summary of the results of breeding and cultivation for the period, which showed the irreplaceable application and productive development of this cereal.
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The barley growing and quality in the Czech Republic 1990-2018
MACHALOVÁ, Tereza
The bachelor thesis describes growing of spring malting barley in the Czech Republic in the years 1990 to 2018. Spring barley is the second most grown cereal and important crop. This thesis contains basic biological characteristics, farming technology, sowed areas and quality of the spring barley in the period of time. Also changes that include in this time period. Other chapters describes a history and present time of varieties malting barley and as well at their rating and appropriateness for a malt production as one of the main raw material for beer production.
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Pružnost poptávkových funkcí v komoditní vertikále sladovnického ječmene
Hlačík, Jan
The diploma thesis is focused on the demand relations on the commodity vertical of malting barley in 1993–2017, for which it evaluates price elasticity. Within the commodity vertical of malting barley, the diploma thesis occupy with the consum-er market of beer, malt market and malting barley. Based on the annual data col-lected from the Czech Statistical Office, the Barley Yearbook and the Czech Hydro-meteorological Institute, models of relevant demand functions were compiled, through which price elasticity was assessed. The obtained coefficients of elasticity were interpreted in relation to the specifics of the considered agri–food vertical.
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Vliv vybraných prvků agrotechniky na výnos a kvalitu zrna sladovnického ječmene
Hauskrecht, Jaroslav
The bachelor thesis on the influence of selected elements of agricultural technology on the yield and quality of malting barley grains deals with the description of the issue and elaboration of the literature search. In the practical part, a small-lot experiment was established, which focused on the influence of non-root nutrition on the cultivation of malting barley. The first part describes the development of malting, malting barley from biological point of view, description of barley cultivation, possibilities of its protection and nutrition as well as its quality requirements. The second part is devoted to the practical part, in which the influence of application of preparation Oligal SD and non-root nutrition by Fertleader Vital fertilizer on growth, growth development, grain yield and malting barley grain quality is tested.
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The spring barley fertilization in terms of selected agricultural company
ŠINDELÁŘ, Jan
This thesis presents the results of malting barley's fertilization obtained on the basis of a field experiment in an agricultural company. The aim of the work was to determine how the rate of nutrients will affect yield and malting quality. Fertilizing was based on three different rations of LAV fertilizer given to plants in an advanced phase of their growth. The rations of nitrogen were set to 20, 40 and 60 kg per hectare. The positive effect of a late fertilization was observed for yield elements. There has been an increase of the number of grains in the ear and of the weight of a thousand grains. Some malting properties were also improved. It was especially the fraction of the front grain and in part germination. But the content of N-substances exceeded the limit in two of three variants.
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Hodnocení agrokomodity ječmen jarní z hlediska využití na trhu
Spousta, Jakub
Bachelor thesis on the topic of "Evaluation of an agrocommodity barley in terms of its usage in the market", describes significance of barely growing in the Czech Republic. In the first part of the work there is a brief literary overview of malting barley, types of malting barley, evaluation of cropped seed and significance of the crop from a perspective of malting and brewing. Furthermore in the work there is an insight into comparison of development of market price of malting barley, a production and export and both floricultural and economic contribution of production of this crop and growing profitability.
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Determination of zearalenone in malting barley
Wawroszová, Simona ; Čumová,, Martina (referee) ; Běláková, Sylvie (advisor)
This bachelor thesis deals with monitoring of zearalenone content in malting barley using immunochemical method ELISA and consequently method of liquid chromatography with mass spectrometry (LC-MS/MS). Theoretical part describes the brewing raw materials and important toxinogenic filamentous fungi. Special attention was drawn to selected fusarium mycotoxins (fumonisins, trichothecenes, zearalenone). It also describes some methods for determination of mycotoxins. Experimental section describes analyze 90 samples of malting barley of different varieties using method ELISA. In 19 samples zearalenone concentration was higher than limit of quantification. The highest level of zearalenone concentration (39,2 g•kg-1) contained barley, variety Wintmalt, where corn was used as a fore-crop. The samples were subsequently analyzed by LC-MS/MS. Zearalenone concentration was higher than limit of quantification only in four samples, namely in samples of Blaník, Malz and Wintmalt varieties of barley. Furthermore, the samples of intermediate products of malting process were analyzed by LC-MS/MS. No sample showed level of zearalenone higher than limit of quantification.
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Changeof phenolic acids content during malting of spring barley
Štýblová, Romana ; Janoušková, Eva (referee) ; Běláková, Sylvie (advisor)
This bachelor thesis deals with detection of chosen phenolic acids (sinapic acid, caffeic acid, ferulic acid, syringic acid, p – hydroxybenzoic acid, vanillic acid and p – coumaric acid) in the malting barley and monitoring of their changes during making a malt in real enviroment of floor malt house. Tehoretical part describes individual phenolic acids, their presentation in raw material for making of malt and methods for determination . There is described technology of making a malt. The nine samples was taken in experimental part. There were a malting barley, intermediate products of malting, malt and rootlets. Phenolic acids were extracted by alkaline and acid hydrolysis. This samples were detected by Ultra high – performance liquid chromatography using of UV detection (UPLC/PDA).
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