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Production of carotenoids and other metabolites by yeast using selected food wastes.
Chujanov, Oleg ; Šimanský, Samuel (referee) ; Szotkowski, Martin (advisor)
This bachelor thesis is focused on the issue of yeast cultivation with the usage of waste sub-strates from the food industry on a laboratory level. Carotenogenic yeasts are microorganisms capable of processing food waste substrates and use them as a source of organic nutrients for growth. This thesis consists of a practical as well as theoretical part. The experimental section focuses on the description of different strains of yeasts, metabolites and types of waste sub-strates. The two main substrates chosen for this research were chicken fat and chicken fe-athers. The yeast types used in this thesis were Rhodotorula kratochvilovae (CCY 20-2-26), Rhodosporidium toruloides (CCY 62-2-4), Cystofilobasidium macerans (CCY 10-1-2), Spo-ridiobolus pararoseus (CCY 19-9-6), Rhodotorula mucilaginosa (CCY 20-9-7), Rhodotorula mucilaginosa (CCY 19-4-25) and Sporidiobolus metaroseus (CCY 19-6-20). These strains reported high production values of the metabolites researched in this thesis. The strains Rho-dosporidium toruloides (CCY 62-2-4) and Sporidiobolus metaroseus (CCY 19-6-20) were chosen for the production of metabolites from waste substrates, for those reported the most promising results.
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Biotechnological treatment of poultry industry waste with yeast
Ustiuzhanin, Vladimir ; Sniegoňová, Pavlína (referee) ; Szotkowski, Martin (advisor)
This bachelor's thesis focuses on the cultivation of specific carotenogenic yeast strains using waste substrates from the poultry industry. Yeasts are highly valued for their capacity to degrade complex organic compounds and generate diverse metabolites, including fatty acids, lipids, and carotenogenic pigments. The yeast strains selected for this study were Rhodotorula kratochvilae (CCY 20-2-26), Rhodosporidium toruloides (CCY 62-2-1), Rhodotorula mucilaginosa (CCY 19-4-6), Sporidiobolus salmonicolor (CCY 19-6-4), Sporidiobolus metaroseus (CCY 19-6-20), Sporidiobolus pararoseus (CCY 19-9-6). The work is divided into two parts: theoretical and experimental. The theoretical part provides details on the yeast genera used, a description of the waste substrate, monitored metabolites, and methods applied for their analysis. The experimental part encompasses the cultivation procedures and conditions, biomass processing, metabolite analysis, and the obtained results. Main selected waste substrates were chicken fat and feather hydrolysate. Through a series of laboratory-scale experiments, the most appropriate strains for producing the monitored metabolites and biomass on waste substrates were identified: Sporidiobolus pararoseus a Rhodotorula mucilaginosa. The highest lipid content in the biomass was identified in the strain Sporidiobolus pararoseus.
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Production of carotenoids and other metabolites by yeast using selected food wastes.
Chujanov, Oleg ; Šimanský, Samuel (referee) ; Szotkowski, Martin (advisor)
This bachelor thesis is focused on the issue of yeast cultivation with the usage of waste sub-strates from the food industry on a laboratory level. Carotenogenic yeasts are microorganisms capable of processing food waste substrates and use them as a source of organic nutrients for growth. This thesis consists of a practical as well as theoretical part. The experimental section focuses on the description of different strains of yeasts, metabolites and types of waste sub-strates. The two main substrates chosen for this research were chicken fat and chicken fe-athers. The yeast types used in this thesis were Rhodotorula kratochvilovae (CCY 20-2-26), Rhodosporidium toruloides (CCY 62-2-4), Cystofilobasidium macerans (CCY 10-1-2), Spo-ridiobolus pararoseus (CCY 19-9-6), Rhodotorula mucilaginosa (CCY 20-9-7), Rhodotorula mucilaginosa (CCY 19-4-25) and Sporidiobolus metaroseus (CCY 19-6-20). These strains reported high production values of the metabolites researched in this thesis. The strains Rho-dosporidium toruloides (CCY 62-2-4) and Sporidiobolus metaroseus (CCY 19-6-20) were chosen for the production of metabolites from waste substrates, for those reported the most promising results.
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