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Verification of the presence of probiotic bacteria in a cosmetic product using the polymerase chain reaction (PCR) technique
 Raevskaya, Vera ; Kroupová, Zuzana (referee) ; Smetana, Jan (advisor)
This bachelor thesis focuses on the verification of the presence of probiotic bacteria in a cosmetic product using the polymerase chain reaction (PCR) technique. The theoretical part provides an overview of probiotics, their application in cosmetics and their effect on skin condition. Furthermore, the most commonly used molecular biological methods for the identification of probiotic organisms are described. In the practical part, the work focuses on the isolation of bacterial DNA from cosmetic products and its subsequent amplification by PCR. The amplified products were analyzed by agarose gel electrophoresis and detected by UV irradiation. The results showed the presence of bacteria of the genera Lactobacillus and Bifidobacterium, but the presence of bacteria of the genus Lactococcus, which were declared by the manufacturer together with the above genera, was not confirmed.
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