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Investigation of yeast properties during the beer fermentation
Kociánová, Lenka ; Vítová, Eva (referee) ; Omelková, Jiřina (advisor)
In this diploma thesis, the properities of brewery’s yeasts during the operation beer fermentation in the selected brewery and dependences of diferent agents and their influence on viability and vitality of the yeasts were studied. Other observed properities were physiological state, pH, temperature, a value of soft and coarse sludges, a value of dissolved oxygen in wort, the level of wort’s fermentation. It were collected the samples of fermenting wort and washing yeasts for determination. The used yeasts were observed from the first time until thein last used (generally 4 times). pH, temperature, apparent fermenting and total numer of yeast cells were measured in the collected samples. The used yeasts were washed before every other application and vitality was determined. The number of death cells were observed by this method. The number of death cells never fell bellow 5 %. The value of dissolved oxygen in wort is also the important agent for the growth of yeasts. The touchs with low number of oxygen showed that the time for fermentation had to be longer (by about 3 or 4 days more). The touchs with higher number of sludges showed that the sludges haven’t any influence on the yeasts and the procces of fermentation. Confirm the accuracy of the repeated used of the yeasts was the object of this thesis.
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Brewing industry
Artýszková, Jana ; Illková, Kateřina (referee) ; Omelková, Jiřina (advisor)
The aim of the theoretical part of the thesis is the study and the treatment of the problem of the manufacturing of beer, focused on the czech conditions and classical Czech technology. Within the theoretical part the history of this branch of industry together with the modern methods, enabling greater productivity of beer production, are summarized. Experimental part of the thesis was carried out in a small brewery in Czech republic, producing aproximately 10 000 hl per year. In this brewery the selected parameters were studied not only in the course of cooking and fermentation of beer, but during the output control in racking to the drums and plastic bottles, as well. The studied parameters were as follows: the sugar content of front and wort, the control of microbiological contamination in fermenting cellar and in beer-storage cellar, the content of CO2 by last stage of fermentation and pH- value and color by the end-product.
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The laboratory control of beer
Klinková, Lucie ; Pařilová, Kateřina (referee) ; Omelková, Jiřina (advisor)
This bachelor thesis is aimed on laboratory monitoring of raw materials for beer production, in-process monitoring and final product control. Theoretical part deals with variety of procedures needed to produce a quality final product. Practical part of thesis was done in a laboratory of a medium sized brewery in the Czech republic. The production of formentioned brewery is 300, 000 hectolitres of traditionally brewed beer per year. The quality control of wort and final product was done. In – process control was done to obtain the extract value and pH of wort. The clarity, color, pH, gravity, and the both apperental and real alcohol content, the degree of attenuation of apperental and real content of bitter substances was determined in final product.
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Automation of brewhouse
Krykorka, Daniel ; Pásek, Jan (referee) ; Štohl, Radek (advisor)
Diploma thesis presents automatization of brewhouse in Ústecký Region. The first part of thesis describes beer brewing technology. Second describes changes made to the techno- logy and installation of remote service access. Further is discussed the implementation of algorithms in existing PLC, design of SCADA system including it’s implementation. The last part describes how commissioning was done, and further describes record of lautering.
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Srovnání pivovarských a vinných kmenů kvasinek v různých fermentačních podmínkách
Ryšavý, Daniel
The thesis on the topic Comparison of brewer’ and wine’ yeast strains in various fermentation conditions has been prepared at the Department of Postharvest Technology of Horticultural Products at the Faculty of Horticulture, Mendel University in Brno in 2019/2020. The thesis deals with the taxonomy and the properties of yeasts and their useage and focuses mainly on brewer's and wine yeast strains. In the practical part, the analytical parameters of wort fermented by selected brewer's and wine yeast strains have been evaluated and compared. By these yeasts their influence on the sensory quality of the produced beer has also been evaluated.
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Vliv přídavku pivovarského mláta na kvalitu pekařských výrobků
Ratiborská, Silvie
The theoretical part describes the malting process, which includes a receiving and grain cleaning, soaking grain, germination and kilning. They describe the basic types of malts. The next section describes the brewing industry, which involves the production of wort, spent grains and subsequent production of beer. The latest focus of work is pri-marily the use of brewery-spent grains which created in the production of wort. Work, in addition to literature review also includes a practical part, which focuses on the addi-tion of spent grains into baked goods and fresh both in form and in dried.
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Automation of brewhouse
Krykorka, Daniel ; Pásek, Jan (referee) ; Štohl, Radek (advisor)
Diploma thesis presents automatization of brewhouse in Ústecký Region. The first part of thesis describes beer brewing technology. Second describes changes made to the techno- logy and installation of remote service access. Further is discussed the implementation of algorithms in existing PLC, design of SCADA system including it’s implementation. The last part describes how commissioning was done, and further describes record of lautering.
|
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Investigation of yeast properties during the beer fermentation
Kociánová, Lenka ; Vítová, Eva (referee) ; Omelková, Jiřina (advisor)
In this diploma thesis, the properities of brewery’s yeasts during the operation beer fermentation in the selected brewery and dependences of diferent agents and their influence on viability and vitality of the yeasts were studied. Other observed properities were physiological state, pH, temperature, a value of soft and coarse sludges, a value of dissolved oxygen in wort, the level of wort’s fermentation. It were collected the samples of fermenting wort and washing yeasts for determination. The used yeasts were observed from the first time until thein last used (generally 4 times). pH, temperature, apparent fermenting and total numer of yeast cells were measured in the collected samples. The used yeasts were washed before every other application and vitality was determined. The number of death cells were observed by this method. The number of death cells never fell bellow 5 %. The value of dissolved oxygen in wort is also the important agent for the growth of yeasts. The touchs with low number of oxygen showed that the time for fermentation had to be longer (by about 3 or 4 days more). The touchs with higher number of sludges showed that the sludges haven’t any influence on the yeasts and the procces of fermentation. Confirm the accuracy of the repeated used of the yeasts was the object of this thesis.
|
|
|
The laboratory control of beer
Klinková, Lucie ; Pařilová, Kateřina (referee) ; Omelková, Jiřina (advisor)
This bachelor thesis is aimed on laboratory monitoring of raw materials for beer production, in-process monitoring and final product control. Theoretical part deals with variety of procedures needed to produce a quality final product. Practical part of thesis was done in a laboratory of a medium sized brewery in the Czech republic. The production of formentioned brewery is 300, 000 hectolitres of traditionally brewed beer per year. The quality control of wort and final product was done. In – process control was done to obtain the extract value and pH of wort. The clarity, color, pH, gravity, and the both apperental and real alcohol content, the degree of attenuation of apperental and real content of bitter substances was determined in final product.
|
|
|
Brewing industry
Artýszková, Jana ; Illková, Kateřina (referee) ; Omelková, Jiřina (advisor)
The aim of the theoretical part of the thesis is the study and the treatment of the problem of the manufacturing of beer, focused on the czech conditions and classical Czech technology. Within the theoretical part the history of this branch of industry together with the modern methods, enabling greater productivity of beer production, are summarized. Experimental part of the thesis was carried out in a small brewery in Czech republic, producing aproximately 10 000 hl per year. In this brewery the selected parameters were studied not only in the course of cooking and fermentation of beer, but during the output control in racking to the drums and plastic bottles, as well. The studied parameters were as follows: the sugar content of front and wort, the control of microbiological contamination in fermenting cellar and in beer-storage cellar, the content of CO2 by last stage of fermentation and pH- value and color by the end-product.
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