Antibacterial Activity of Stem Bark Extracts of Oroxylum indicum an Endangered Ethnomedicinal Forest Tree

The present work has been under taken to study the antibacterial activity of stem bark extracts of O. indicum against disease causing gram negative and gram positive bacteria. Antimicrobial activity of solvent extracts of stem bark of Oroxylum indicum has been studied to find out its activity against four important bacterial strains Bacillus subtilis, B. cereus, Staphylococcus albus and S. aureus . The antimicrobial activity of the stem bark extracts was done through well diffusion method and by measuring the inhibition zone around the disc. The results revealed that the aqueous extracts of O. indicum exhibited antimicrobial activity against all the microbes under study. The results provided evidence that the species O. indicum can be used as a potential source of antimicrobial agent.