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Transport Properties of Gellan Hydrogels
Sokolínský, Jan ; Sedláček, Petr (referee) ; Kalina, Michal (advisor)
This bachelor thesis deals with the characterization of mechanical and transport properties of gellan based hydrogel systems. As gellan gum is a biopolymer, hydrogels based on this biopolymer are suitable candidates for use in the pharmaceutical industry and medical applications. The characterization of mechanical properties was realized by rheological analysis and by drying scales, transport properties were characterized by diffusion experiments in combination with the detection using UV-VIS spectrometry. The result of this work is a comparation and commentary of the measured data, in order to provide an overview of the properties of physical gellan gum hydrogels. It was found out that by changing the concentration of the biopolymer and by a suitable selection of the dispersion medium, transport, and mechanical properties of the physical gellan gum hydrogels can be modified.
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Combined drink from wine and juice
Štýblová, Romana ; Vítová, Eva (referee) ; Vespalcová, Milena (advisor)
This diploma thesis deals with preparation of combined drinks. These drinks consist of white wine and fruit concentrate base. This thesis was divided to 2 parts – senzory and chemical. As a fruit component was chosen aronia concentrate. The first sensory analysis was concentrated on a choice of a suitable white wine for this procedure. Second sensory analysis was focused on aditives. We added citric acid and ascorbic acid to the drinks. Evaluators had to choose the most tasty drinks. Next sensory analysis was dedicated to choice of the right drink composition. The last analysis was focused on choice of right fruit composition. Evaluators had to compare between the drink that was prepared from aronia concentrate or a drink prepared from aronia concentrate and other species of fruits. Their duty was to decide which one is more tasty. Chemical part was dealing with puting individual components of drink preparation to the test. Combined drinks had to undergo chemical tests too.
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Transport Properties of Gellan Hydrogels
Sokolínský, Jan ; Sedláček, Petr (referee) ; Kalina, Michal (advisor)
This bachelor thesis deals with the characterization of mechanical and transport properties of gellan based hydrogel systems. As gellan gum is a biopolymer, hydrogels based on this biopolymer are suitable candidates for use in the pharmaceutical industry and medical applications. The characterization of mechanical properties was realized by rheological analysis and by drying scales, transport properties were characterized by diffusion experiments in combination with the detection using UV-VIS spectrometry. The result of this work is a comparation and commentary of the measured data, in order to provide an overview of the properties of physical gellan gum hydrogels. It was found out that by changing the concentration of the biopolymer and by a suitable selection of the dispersion medium, transport, and mechanical properties of the physical gellan gum hydrogels can be modified.
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Combined drink from wine and juice
Štýblová, Romana ; Vítová, Eva (referee) ; Vespalcová, Milena (advisor)
This diploma thesis deals with preparation of combined drinks. These drinks consist of white wine and fruit concentrate base. This thesis was divided to 2 parts – senzory and chemical. As a fruit component was chosen aronia concentrate. The first sensory analysis was concentrated on a choice of a suitable white wine for this procedure. Second sensory analysis was focused on aditives. We added citric acid and ascorbic acid to the drinks. Evaluators had to choose the most tasty drinks. Next sensory analysis was dedicated to choice of the right drink composition. The last analysis was focused on choice of right fruit composition. Evaluators had to compare between the drink that was prepared from aronia concentrate or a drink prepared from aronia concentrate and other species of fruits. Their duty was to decide which one is more tasty. Chemical part was dealing with puting individual components of drink preparation to the test. Combined drinks had to undergo chemical tests too.
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