Lichen (Lecanora epibryon) collected from Arshany reservation at Idleb city
was taken for screening antibacterial activity. Acetone was used as solvent for
extraction of active compounds from lichen. The activity of extract was tested
against thre
e isolated infectious bacteria (Pseudomonas sp., Salmonella sp.,
Klebsiella sp.) by cytotoxicity assay using MTT test. Acetone extract of lichen
showed antibacterial activity against all test organisms, but Salmonella sp. was
highly susceptible to the extract even at low concentration.
