Antibacterial activity of some medicinal plants commonly used in Indian systems of medicine.
Chattopadhyay R. R., Bhattacharyya S. K., Medda C.
Author Affiliation: Agricultural and Ecological Research Unit, Indian Statistical Institute, 203, Barrackpore Trunk Road, Kolkata - 700 108, India.
Biomed 2 : 367-374
Abstract : Extracts of (Aegle marmelos, Azadirachta indica, Terminalia chebula, Mangifera indica and Ocimum sanctum) were investigated in vitro using microbial growth inhibition assay methods against test organisms (Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli). It was observed that all plant materials showed varying degrees of strain specific inhibitory action against the strains evaluated. Among the plants used, ethanolic extract of T. chebula and A. marmelos were found to have the strong antibacterial activity against all the strains tested. The percentage of inhibition of the plant extracts against the test strains with respect to reference standard antibiotic Gentamycin ranged from 19% to 95%. On the basis of the of inhibitory zone diameter, minimal inhibitory concentration (MIC), minimal bactericidal concentration, MICindex and total activity values against the test strains, ethanolic extract of T. chebula possessed higher antibacterial potential than A. marmelos.