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Biotechnological production of selected metabolites on whey substrate
Gadová, Martina ; Kočí, Radka (oponent) ; Márová, Ivana (vedoucí práce)
The submitted master thesis deals with assessment of the possibility of using of cheese whey for biotechnological production. Study content composition of lyophilized whey, optimization of acid hydrolysis and preparation of cultivating mediums with different content and treatment of cheese whey. Between the aims of this thesis belong also screening of microbial producers, interesting for biotechnology and looks at their growth and production of selected metabolites of cultivation mediums containing cheese whey. All substrates and produced metabolites where examined with UHPLC-PDA-RI and GC-FID: Amount of produced microbial lipids was determined by gravimetric analysis. Examined microorganisms belonged to yeast genus Saccharomyces, Metschnikowia and bacterial genus Lactobacillus and its focused on production of ethanol, microbial lipids and lactic acid. The highest yields with using yeasts were obtained using production medium containing hydrolysed lactose in cheese whey. The highest production, in case of bacteria, was obtained using non-hydrolysed, untreated cheese whey production medium.
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Preparation of hyaluronan oligosaccharides with N-acetylglucosamine at both ends of the chain using enzymatic catalysis
Gadová, Martina ; Hermannová,, Martina (oponent) ; Šílová, Tereza (vedoucí práce)
This bachelor thesis deals with preparation of odd-numbered hyaluronan oligosaccharides with N-acetylglucosamine at both ends of the chain using enzymatic catalysis by -Glucuronidase. The theoretical part focuses on present knowledge of hyaluronic acid and it fragments. It focuses on properties, enzymatic hydrolysis, application in different branches of science, but also analysis of oligosaccharides. One chapter is devoted to properties of enzyme -Glucuronidase. The experimental part deals with preparation of oligosaccharides type HANN. The reaction conditions for preparation of HA oligosacharides were optimized (pH, temperature) and the progress of enzymatic hydrolysis and the mixture composition after digestion were monitored by method UHPLC.. After optimization the mixture of oligosaccharides HANN was prepared and consenquently it was analysed by methods UHPLC and LC-MS. All the data were acquired in company Contipro Pharma, a.s., Dolní Dobrouč, Czech republic.
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Biotechnological production of selected metabolites on whey substrate
Gadová, Martina ; Kočí, Radka (oponent) ; Márová, Ivana (vedoucí práce)
The submitted master thesis deals with assessment of the possibility of using of cheese whey for biotechnological production. Study content composition of lyophilized whey, optimization of acid hydrolysis and preparation of cultivating mediums with different content and treatment of cheese whey. Between the aims of this thesis belong also screening of microbial producers, interesting for biotechnology and looks at their growth and production of selected metabolites of cultivation mediums containing cheese whey. All substrates and produced metabolites where examined with UHPLC-PDA-RI and GC-FID: Amount of produced microbial lipids was determined by gravimetric analysis. Examined microorganisms belonged to yeast genus Saccharomyces, Metschnikowia and bacterial genus Lactobacillus and its focused on production of ethanol, microbial lipids and lactic acid. The highest yields with using yeasts were obtained using production medium containing hydrolysed lactose in cheese whey. The highest production, in case of bacteria, was obtained using non-hydrolysed, untreated cheese whey production medium.
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Preparation of hyaluronan oligosaccharides with N-acetylglucosamine at both ends of the chain using enzymatic catalysis
Gadová, Martina ; Hermannová,, Martina (oponent) ; Šílová, Tereza (vedoucí práce)
This bachelor thesis deals with preparation of odd-numbered hyaluronan oligosaccharides with N-acetylglucosamine at both ends of the chain using enzymatic catalysis by -Glucuronidase. The theoretical part focuses on present knowledge of hyaluronic acid and it fragments. It focuses on properties, enzymatic hydrolysis, application in different branches of science, but also analysis of oligosaccharides. One chapter is devoted to properties of enzyme -Glucuronidase. The experimental part deals with preparation of oligosaccharides type HANN. The reaction conditions for preparation of HA oligosacharides were optimized (pH, temperature) and the progress of enzymatic hydrolysis and the mixture composition after digestion were monitored by method UHPLC.. After optimization the mixture of oligosaccharides HANN was prepared and consenquently it was analysed by methods UHPLC and LC-MS. All the data were acquired in company Contipro Pharma, a.s., Dolní Dobrouč, Czech republic.
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