Comparative Antibacterial Studies On The Root, Stem Bark And Leaf Extracts Of Parkia Clappertoniana.

The research on medicinal plants is gradually gaining popularity due to millions of people depending on the use of different parts of these materials for various ailments.The antibacterial activity of hot and cold water and ethanolic extracts of the root, stem and leaf of Parkia clappertonia against Escherichia coli ATCC 11775, Pseudomonas aeruginosa ATCC10145, Staphylococcus aureus ATCC 12600 was evaluated using agar-well diffusion and agar dilution methods. All the organisms were susceptible to all the extracts with the diameter of zones of inhibition ranging between 14 mm – 27 mm for hot water extracts, 12 mm – 22 mm for cold water extracts and 12 mm – 25 mm for ethanolic extracts. The Minimum Inhibitory Concentrations ranged between 2.5 mg/ml – 20.0 mg/ml. The rate of kill of the test bacterial species by hot water extract was concentration dependent. Saponin, flavonoids, tannin, glycoside, alkaloid and anthraquinone were the phytochemical constituents detected from the Parkia clapatoniana root, stem and leaf extracts. The implications of these findings in the medicinal use of Parkia clapertoniana are discussed.