INVESTIGATION ON ANTIMICROBIAL EFFECTS OF SOME LICHEN SPECIES COLLECTED FROM KASTAMONU REGION

Authors : Ergin MURAT ALTUNER, Talip ÇETER, Duygu DEMİRKAPI, Kerime ÖZKAY, Uğur HAYAL, Gamze ESER

Pages : 21-31

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Publication Date : 2011-06-01

Article Type : Research Paper

Abstract :Lichens are symbiotic organisms of fungi and photobionts insert ignore into journalissuearticles values(algae or cyanobacteria);. It has been known for many years that some secondary metabolites produced by lichens have antagonistic effects on different microorganisms, yeasts and algae. In this study, in vitro antimicrobial activity of Pseudevernia furfurace, Hypogymnia tubulosa, Evernia divaricata, Letharia vulpina samples collected from Kastamonu region were examined against Candida albicans ATCC 26555, Salmonella enterica Serotype Typhium SL 1344, Escherichia coli ETEC LM 63083, Shigella flexneri and Bacillus megaterium. The antimicrobial activity of samples was evaluated by disc diffusion method and the results were supported by MIC insert ignore into journalissuearticles values(minimum inhibitory concentration); and MBC/MFC insert ignore into journalissuearticles values(minimum bactericidal/fungicidal concentration); tests. According to the results, among the lichen samples, Letharia vulpina presented an antimicrobial activity against B. megaterium, where Pseudevernia furfurace had an antimicrobial activity against S. flexneri and B. megaterium, and Evernia divaricata against C. albicans, S. flexneri and B. megaterium. On the other hand, Hypogymnia tubulosa presented no antimicrobial activity
Keywords : Lichens, antimicrobial activity, disc diffusion method, MIC, MBC, MFC