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Isolation and characterization of natural antimycotics and their potential applications
Dvořáková, Eva ; Hoová, Julie (referee) ; Skoumalová, Petra (advisor)
This bachelor thesis was focused on preparation and characterization of products containing natural antimycotic ingredients. The theoretical part summarizes the current issue of increased presence of mycoses and yeast diseases in connection with the extension of the problem of reduced immunity. Furthermore, the problem of synthetic drugs and antimycotics compared to alternatives of natural origin was described. In the experimental part, selected extracts (aqueous, ethanolic and lipidic) were prepared, characterized and subsequently encapsulated into liposomes. The content of polyphenols, flavonoids and the total antioxidant activity of extracts was measured. In liposomes, the encapsulation efficiency, size, stability and long-term stability were measured. In addition, the antimycotic activity of individual extracts and liposomes against Candida glabrata was studied. For comparison, the antifungal activity of the commercial drug clotrimazole was also tested. Lipidic extracts showed highest antimycotic activity from all of the prepared extracts, which is why these extracts were used to prepare antifungal gels and suppositories. More specifically, lipidic extracts of nasturcium, cinnamon, ginger and liposomes containing them were used. Their antimycotic activity was also tested and confirmed for these preparations. Finally, the cytotoxicity test on the HaCaT human cell line showed that used extracts and liposome particles are safe and that the prepared products could thus serve as an alternative to synthetically prepared antimycotics in the future.
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