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Preparation and characterisation of encapsulated biogenic nanoparticles for medical application
Poláková, Veronika ; Vojtová, Lucy (oponent) ; Brtníková, Jana (vedoucí práce)
The aim of this bachelor thesis is a preparation and polymeric encapsulation of antibacterial biogenic nanoparticles in order to enhance their stability, reduce possible cytotoxicity while maintaining antibacterial activity. The theoretical part contains an overview of regenerative medicine, commonly used nanostructures in regenerative medicine, their properties, and methods of encapsulation. The experimental work especially focuses on selenium nanoparticles synthesis using different methods with specific protecting agents followed by encapsulation via nature-inspired polymer. The used encapsulation methods are based on self-assembly polymerization and coating of selected natural polymeric adhesive. The chemical and physical properties of pure and encapsulated selenium nanoparticles, such as their concentration and morphology (size and shape) were studied using Fourier transformed infrared spectrophotometry and scanning transmission electron microscopy. It was found that different used method provides nanoparticles with different size, shape and stability. As a main result, an optimized method of selenium particles synthesis, stabilization and encapsulation was developed and described. Nanoparticles, synthesized using this method, are spherical with size ranging from 10.5 to 101 nm. The sizes of most of the synthesized nanoparticles lay within 10.5 to 40 nm interval. When encapsulated, their sizes increase and are ranging from 74.5 to 571.5 nm.
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