STUDY OF SOLVENT EXTRACTS OF SOME SELECTED FERNS FOR ANTIMICROBIAL ACTIVITY

Abstract

The present study was aimed to study the antimicrobial activity of different solvent extracts of some selected ferns commonly found around the area of district Darjeeling of West Bengal, India against Gram positive and Gram negative bacteria. Collected plant materials were dried and the soluble extracts were made using different solvents like distilled water, methanol, ethanol and acetone. Antimicrobial activities were measured by disc diffusion method. In Cyclosorus interruptus (Willd) H.I acetone extract was suitable than other solvent for Gram negative and ethanol extract for Gram positive bacteria. In Gleichenia microphylla R.Br acetone extract for Gram positive and methanol extract for Gram negative bacteria showed better antimicrobial activity. In Microsorium pteropus(Bl.) Copel acetone extract showed good activity for both Gram positive and Gram negative bacteria. In Athyrium filix-femina (L.) Roth had good antimicrobial activity in acetone extract for both Gram negative and Gram positive bacteria