Comparative Antimicrobial Activity of Crude Extracts of Protoparmeliopsis muralis (Schreb) M. Choisy (Lecanoraceae) and Parmotrema perlatum (Hudson) M. Choisy (Parmeliaceae) Lichens

Abstract

The inhibitory action of the extracts of Protoparmeliopsis muralis and Parmotrema perlatum lichens was evaluated by disc diffusion and macrobroth dilution methods. The obtained results revealed that extracts generally showed antimicrobial activity except for water extracts. P. muralis lichen possess higher antimicrobial activity when compared with P. perlatum lichen. Minimum Inhibition Concentration (MIC) values of fungi is comparatively lower than MIC values of bacteria. Therefore, this work confirms the inhibitory effects of P. muralis and P. perlatum lichens as natural antimicrobials and suggests the possibility of utilizing them in pharmaceutical industry for curing of infectious diseases caused by test microorganisms.