Testing the effects of a mixture of beta-glucans and antimicrobial extracts

The bachelor thesis aims to describe the effects of a mixture of selected natural substances in conjunction with -glucan obtained from the cell wall of the studied yeast species. The theoretical part describes bioactive substances and compounds with antioxidant activity. Subsequently, selected species of plants and herbs are characterized as direct sources of bioactive substances. In parallel, the following chapters of the theoretical part present as sources of -glucan representatives of yeast species with their morphological characterization. - glucan, its structure, biological effects, as well as the principles of methods used in the determination and preparation of bioactive mixtures of plant extracts and -glucan are described. In the experimental part of the work, attention is paid to the preparation, cultivation of yeast, isolation, and determination of -glucan content using the enzymatic method. The amount of polyphenols, flavonoids, and antioxidant activity in aqueous plant extracts is determined. The content of fatty acids, carotenoids, and coenzyme Q is determined in yeast. Subsequently, the antimicrobial and antioxidant effects of mixtures of plant extracts and -glucan are tested