2.4. Antibacterial assays
Qualitative antibacterial assays were performed by agar well diffusion method. Different volumes (50e300 ml) of extracts dissolvedin distilled water (10 mg/ml) were directly applied to
the wells made on surface of MHA containing bacterial lawn. Control wells received only distilled water. Positive control wells received streptomycin (10 mg) except in case of MRSA and E. faecalis, where streptomycin (300 mg) was used as pos- itive control.Afterdiffusion, plateswereincubatedat37Cfor 18 h and zones of growth inhibition were measured. Anti- mycobacterial activity of the plant extracts was tested by In- direct proportion method. The assay was performed on LJ medium with or without the plant extracts (05e20 mg ml1). The minimuminhibitoryconcentration(MIC)wasdetermined by agar dilution method. The concentration of plant extracts used were in the range of 0.25e08 mg ml1 and plates without any extracts were used as control for MIC determination.