Natural products have potential of containing agents for various diseases. When extensive drug resistance is taken into account, the need for the investigation of new antimicrobial substances is essential. In this study the antimicrobial activity of Infundibulicybe geotropa, Lactarius controversus, Lactarius deliciosus and Phellinus hartigii is investigated against Candida albicans ATCC 26555, Escherichia coli ETEC LM 63083, Pseudomonas aeruginosa, Salmonella enterica serotype Typhimirium SL 1344 and Shigella flexneri (clinical isolate). As a result it is observed that all extracts had an antibacterial activity against S. flexneri and all extracts except P. hartigii had an antibacterial activity against P. aeruginosa.

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