Abstract: Nephrolepis biserrata (Giant Sword Fern) is evaluated for antimicrobial activity against six bacterial strains and four fungal pathogens by Agar well diffusion method. Distilled Water, Chloroform, Methanol and Ethyl Acetate extracts of different concentrations are used in the study. From the study, it is observed that the methanol extracts of the plant species showed higher zone of inhibition against Bacillus subtilis (gram positive), Klebsiella pneumonia (gram negative) and Candida albicans (Fungal strains). Hence, Nephrolepis biserrata can be used in the treatment of aliments caused by the resistant pathogenic micro organisms.
Key Words: Nephrolepis biserrata, Leaf Extracts, Antimicrobial activity, Zone of inhibition, Micro organisms, Agar well diffusion method