In vitro analysis of antibacterial and antifungal potential of lichen species of Everniastrum cf vexans, Parmotrema blanquetianum, Parmotrema reticulatum and Peltigera laciniata

Abstract

In vitro antibacterial and antifungal activity of the water, ethanol and dichloromethano extracts of four lichen species viz, Everniastrum cf. vexans, Parmotrema blanquetianun, Parmotrema reticulatum, Peltigera laciniata were proved against six bacteria strains (Staphylococcus aureus, Listeria monocytogenes, Proteus vulgaris, Escherichia coli, Pseudomonas aeruginosa and Klebsiella pneumonia) and six fungal yeasts (Candida albicans, C. glabrata, C. krusey, C. parapsilopsis, C. tropicalis, and Cryptococcus neoformans). Antimicrobial activity was analysed employing three methods of diffusion: the spot-on-a-lawn method, disk diffusion and well diffusion assay. Ethanol extracts of lichenized fungi were found more effective against tested yeast than dichloromethane extracts. Everniastrum cf. vexans showed the lowest MIC and MFC for both solvents.