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Studium faktorů ovlivňujících produkci bioetanolu z obilných a ovocných rmutů
Koubková, Hana
This work describes the production of ethanol intended for food and industrial production of bioethanol, which serves to drive the vehicles. Attention is focused on the preparation of cereal and fruit mash. The work also includes the evaluation of bioethanol yield of selected varieties of wheat grown in location Obora. Experiment results showed a high yield of varieties for bioethanol of bakery quality B. It was not proved, that the varieties with lower bakery quality show higher yield of ethanol. It was also researched whether the starch content significantly affects the yield of bioethanol. It was not proved that higher starch content has a major effect on the production of bioethanol
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Možnosti vybraných kvasinkových kmenů v technologii výroby piva
Caltová, Jana
In this Bachelor thesis I deal with use of yeast strains by beer production. The first part of this work is dedicated to the history of beer production and the use of the yeast strains by the influence of beer. It is explaned the diference between lower and upper fermentation. It talks about the history of beer production and its technology. In the next part of my work I deal with influence of bakterium that are used in beer industry. In the end of my work I deal with the anaerobic glycolysis and ethanol fermentation.
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Vliv vybraných faktorů ovlivňujících fermentační proces a využití živin kukuřičné siláže v bachoru
Poštulka, Roman
Corn silage quality is determined by fermentation process quality and nutrient utilization (i.e. starch and fiber). The goal of this trial was to observe the effect of plant protection (against European corn borer), used hybrid and silage additive on the fermentation process quality and ruminal degradability of starch and neutral detergent fiber. The trial was realized on three localities. For the rate of degradability assessment we used the method in sacco. We found high significant differences in the particular and total acid content. On the first locality, the silages from protected plants contained more acids (9,89 g/kg dry matter = DM) than control (7,72 g/kg DM). On other localities was the situation opposite. The lowest content of silage acids and titrable acidity values was measured in the chemical treated silages. These silages had a highest content of ethanol (3,47; 2,83; 4,38 g/kg DM). We confirmed the effect of plant protection on ruminal starch degradability on the first locality. The plant protection led to the decreasing of the starch degradability (45,97 resp. 48,02 %). The NDF degradability did not affect by any experimental factor.
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