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Combined preparatives with encapsulated antimicrobial component
Kneblová, Kateřina ; Bendová, Agáta (referee) ; Márová, Ivana (advisor)
The presented bachelor thesis deals with the preparation and characterization of liposome nanoparticles that have been functionalized by the active substance and subsequently tested for their synergistic effect against microorganisms. In the theoretical part, a research focused on an overview of antimicrobials agents and on encapsulation techniques. In the experimental part, the method of sonification was used to prepare liposomes. Natural and synthetic antimicrobial substances were encapsulated into the particles. The size, stability, encapsulation efficiency, antioxidant and antimicrobial activity were determined for the liposomes that were prepared. Antimicrobial activity was tested on the gram-negative strain Esterichia coli, the gram-positive bacteria Micrococcus luteus, and one fungual strains Candida glabrata. Subsequently, a synergistic effect of the active substances was observed, which was demonstrated both when combining a synthetic active substance with a natural one and when combining two natural active substances. The synergistic effect of the encapsulated substances was observed after a longer period of time than that of the synergy of the pure active substrances. Which could find its application in the pharmaceutical industry, in drug delivery, or in the food industry in preservation processes.
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