Article · Volume 51, Issue 3S1 · pp. s234–s238

Antimicrobial Activities and Some Flavonoids in Extracts of Some Medicinal Plants

Izzet Şener¹, Mahmut Gür², Didem Verep², Kerim Güney³, Ergin Murat Altuner⁴

¹Department of Food Engineering, Faculty of Engineering and Architecture, Kastamonu University, TURKEY.
²Department of Forest Industrial Engineering, Faculty of Forestry, Kastamonu University, TURKEY.
³Department of Forest Engineering, Faculty of Forestry, Kastamonu University, TURKEY;.
⁴Faculty of Science-Arts, Department of Biology, Kastamonu University, TURKEY.

Abstract

Origanum majorana, Melissa officinalis, Anthemis cotula and Avena sativa were extracted by using 65% ethanol to isolate their active constituents. The antimicrobial activities of extracts were investigated against 15 microorganisms by using the disk diffusion method, MIC (Minimum Inhibitory Concentration), MBC (Minimum Bactericidal Concentration) and MFC (Minimal Fungicidal Concentration) tests. Furthermore, the presence of some flavonoids were analyzed by using HPLC. It was determined flavonoids in the extracts of O. majorana, M. officinalis, A. cotula and A. sativa. As a results it was observed that O. majorana was active against Staphylococcus aureus, Enterococcus faecium, Enterococcus faecalis, Salmonella typhimurium and Pseudomonas aeruginosa, where M. officinalis was active against Enterococcus faecium and Enterococcus faecalis. On the other hand, both A. cotula and A. sativa were observed to be active against Enterococcus faecium. The extracts of plant samples showed antibacterial activity against tested microorganisms at different levels.

Keywords: Origanum majorana; Melissa officinalis; Anthemis cotula; Avena sativa; Antimicrobial activity; Flavonoid

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