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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Physico-chemical characterization of 3-hydroxybutyrate with respect to its bioprotective effects
 Kahanovská, Kristína ; Smilek, Jiří (referee) ; Sedláček, Petr (advisor)
The main aim of the work was to verify bio-protective properties of 3-hydroxybutyrate (3HB) in terms of its effect on protein denaturation (especially lipase) and determine the physicochemical characteristics of 3HB that could lead to the explanation of the mechanism of its protective effect. The literature search focused primarily on the mechanism of the protective effect of the compatible solutes. The 3HB belongs to the group of compatible solutes. The protective effect of the 3HB was monitored by Dynamic Light Scattering (DLS). As the other parameters of the aqueous solution 3HB were determined: the dependence of the surface tension on the concentration of the 3HB, the effect of different 3HB concentrations on the zeta potential of the lipase. Hydrophobic and hydrophilic character of the 3HB was characterized with the log Kow parameter. A simple method for quantity determination of the 3HB aqueous solution was optimized. The method is based on conversion of the 3HB into crotonic acid by reaction with sulphuric acid at higher temperatures and on subsequent psectrophotometric determination of the amount of crotonic acid.
Detailed record
Physico-chemical characterization of 3-hydroxybutyrate with respect to its bioprotective effects
 Kahanovská, Kristína ; Smilek, Jiří (referee) ; Sedláček, Petr (advisor)
The main aim of the work was to verify bio-protective properties of 3-hydroxybutyrate (3HB) in terms of its effect on protein denaturation (especially lipase) and determine the physicochemical characteristics of 3HB that could lead to the explanation of the mechanism of its protective effect. The literature search focused primarily on the mechanism of the protective effect of the compatible solutes. The 3HB belongs to the group of compatible solutes. The protective effect of the 3HB was monitored by Dynamic Light Scattering (DLS). As the other parameters of the aqueous solution 3HB were determined: the dependence of the surface tension on the concentration of the 3HB, the effect of different 3HB concentrations on the zeta potential of the lipase. Hydrophobic and hydrophilic character of the 3HB was characterized with the log Kow parameter. A simple method for quantity determination of the 3HB aqueous solution was optimized. The method is based on conversion of the 3HB into crotonic acid by reaction with sulphuric acid at higher temperatures and on subsequent psectrophotometric determination of the amount of crotonic acid.
Detailed record

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