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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Production of lipids by different yeast strains
 Ponížil, David ; Byrtusová, Dana (referee) ; Szotkowski, Martin (advisor)
The bachelor's thesis is focused on the cultivation of selected species of yeast. It is proven that these lipids have many uses and can be applied in the production of biofuels or food industry products. Lipids are forming basic biomolecules that are part of biomembranes in living organisms. The theoretical part describes the structure, chemical composition, and nutrition of these microorganisms. Furthermore, this work contains the characteristic not only of the yeast strains used but also of the lipid metabolites. The experimental part is focused on the description of the preparation of the culture medium designed for yeast growth. The total proportion of lipids and lipid metabolites in the biomass was monitored and compared to individual yeast strains grown on culture media with different compositions. The yeast was cultivated on mediums with carbon and nitrogen from different sources and in different ratios. Waste substrates were also used as carbon and nitrogen sources to compare them to conventional sources. The profile of fatty acids produced by selected yeasts was compared to the fatty acids contained in vegetable oils and butter. The series of experiments showed that the largest proportion of lipids in biomass was observed in the strain Rhodosporidium toruloides grown on a waste substrate of animal fat.
Detailed record
Production of lipids by different yeast strains
 Ponížil, David ; Byrtusová, Dana (referee) ; Szotkowski, Martin (advisor)
The bachelor's thesis is focused on the cultivation of selected species of yeast. It is proven that these lipids have many uses and can be applied in the production of biofuels or food industry products. Lipids are forming basic biomolecules that are part of biomembranes in living organisms. The theoretical part describes the structure, chemical composition, and nutrition of these microorganisms. Furthermore, this work contains the characteristic not only of the yeast strains used but also of the lipid metabolites. The experimental part is focused on the description of the preparation of the culture medium designed for yeast growth. The total proportion of lipids and lipid metabolites in the biomass was monitored and compared to individual yeast strains grown on culture media with different compositions. The yeast was cultivated on mediums with carbon and nitrogen from different sources and in different ratios. Waste substrates were also used as carbon and nitrogen sources to compare them to conventional sources. The profile of fatty acids produced by selected yeasts was compared to the fatty acids contained in vegetable oils and butter. The series of experiments showed that the largest proportion of lipids in biomass was observed in the strain Rhodosporidium toruloides grown on a waste substrate of animal fat.
Detailed record

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