Abstract
Lichens are a symbiotic association between a fungus and algae and/or cyanobacteria. Lichen use as food and dye source, air pollution indicator, medicinal and decoration. In this study, antimicrobial activity of ethyl acetate and ethanol extracts of Usnea longissima Ach. lichen was searched by disc diffusion method. While inhibition zones ranges from 14.5 mm to 24.5 mm for bacteria, inhibition zones ranges from 10 mm to 32 mm for fungi. Lichen extracts exhibited higher activity than gentamicin and tetracycline but they showed similar activity to nystatin. The MIC values of the extract varied between 0.002-0.117 mg/mL against bacteria; while The MIC values of the extract varied between 0.004-0.059 mg/mL against fungi. According to the obtained results, it could be said that U. longissima might be an alternative to synthetic antimicrobial agents.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
