Abstract
Medicinal plants can be defined as plants that possess therapeutic properties or exert a beneficial pharmacological effect on the human or animal body. P. roxburghii is a good moderate sized evergreen medicinal tree with pendent branches and the leaves are simple and alternately arranged. The aim of this study was to screen and determine significant antibacterial activity of dry seeds of P. roxburghii. The ethanol extract of P. roxburghii seed showed highest zone of inhibition in all the bacterial strains tested Staphylococcus aureus (G+) (16mm). Streptococcus mutans (G+) (19mm) Bacilus subtilis (G+) (20mm). E.coli (G-) (21mm). Klebsiella pneumonia (G-) (14mm) Proteus vulgaris (G-) (16mm). The acetone extract of P. roxburghii seeds showed a minimum zone of inhibition against the bacterial pathogens. They are Staphylococcus aureus (G+) (11mm). Streptococcus mutans (G+) (8mm) Bacilus subtilis (G+) (14mm). E.coli (G-) (15mm). Klebsiella pneumonia (G-) (13mm) Proteus vulgaris (G-) (15mm). The aqueous extract of P. roxburghii seeds showed the lowest zone of inhibition against the bacterial strains. They are Staphylococcus aureus (G+) (13mm). Streptococcus mutans (G+) (9mm) . E.coli (G-) (14mm).
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