Ecology, Environment and Conservation Paper


Vol.13, Issue 2, 2007

Page Number: 261-263

LNVITRO EVALUATION OF PLANT EXTRACTS FOR ANTIMICROBIAL ACTIVITY

K. Gayatri, B.V.V.N. Satish P. Mary Anupama

Abstract

The antimicrobial activity of crude leaf extracts of Pomegranate (Punica granatum L) and Pongamia pinnata seeds were studied against six enteric bacteria and one fungal species.The extraction was done in three solvents, viz.,water, ethanol and propanol, and the activity was tested by disc-diffusion technique.The three solvent extracts of Punica granatum showed antibacterial as well as antifungal activity whereas Pongamia pinnata seed extract gave positive results with ethanol and propanol extracts. Staphylococcos aureus is highly sensitive to both the sources, whereas Bacillus subtilis was found to be resistant to Punica granatum and Enterobacter aeruginosa to Pongamia pinnata. Propanol was found to be a good solvent for both the plant materials. Key words :Antimicrobiol agents, Punica granotum, Pongomia pinnata The use and search for drugs from plants is an age- old process. But since the last two decades, search study.