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Thermotolerant strains application for preparation of selected metabolites on waste hydrolysates
Musilová, Kristína ; Vítová, Eva (referee) ; Babák, Libor (advisor)
This Bachelor´s Thesis deals with the preparation of the selected metabolite on hydrolysates of orange fruit waste, specifically on orange peel hydrolysates using thermotolerant strains. The thermotolerant Bacillus coagulans strain having lactic acid as the primary metabolite, a substance with a great perspective, was selected for the fermentation process for its exceptional properties. At the beginning of the experiment, optimal conditions for the growth of the selected microorganism were determined; these were applied during the fermentations. Several fermentations were performed under various conditions until those conditions were determined, in which lactic acid was produced. The fermentation production was determined by the HPLC method and the saccharide decrease by the Somogyi-Nelson method. To achieve lactic acid production, it was necessary to extract the orange peels by an organic agent before fermentation, in order to eliminate substances causing inhibition of micro-organism growth. Higher yields were achieved by the SHF method, but the highest by using the Lactobacillus casei strain.
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Thermotolerant strains application for preparation of selected metabolites on waste hydrolysates
Musilová, Kristína ; Vítová, Eva (referee) ; Babák, Libor (advisor)
This Bachelor´s Thesis deals with the preparation of the selected metabolite on hydrolysates of orange fruit waste, specifically on orange peel hydrolysates using thermotolerant strains. The thermotolerant Bacillus coagulans strain having lactic acid as the primary metabolite, a substance with a great perspective, was selected for the fermentation process for its exceptional properties. At the beginning of the experiment, optimal conditions for the growth of the selected microorganism were determined; these were applied during the fermentations. Several fermentations were performed under various conditions until those conditions were determined, in which lactic acid was produced. The fermentation production was determined by the HPLC method and the saccharide decrease by the Somogyi-Nelson method. To achieve lactic acid production, it was necessary to extract the orange peels by an organic agent before fermentation, in order to eliminate substances causing inhibition of micro-organism growth. Higher yields were achieved by the SHF method, but the highest by using the Lactobacillus casei strain.
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