Keywords: Boswellia serrata, antibacterial, disc diffusion, Minimum Inhibitory Concentration (MIC).


The gum exuded from stem of Boswellia serrata (Family: Burseraceae), used in traditional medicine for the therapeutic purpose was extracted by aqueous, petroleum ether, acetone and methanol. The disc diffusion method was used to determine the antibacterial activity on gram negative: Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris, and Klebsiella pneumoniae UTI pathogens. The results indicated that the Aqueous extract of B. serrata showed high zone of inhibition against P. vulgaris (22.67 mm), Petroleum ether extract of B. serrata showed high zone of inhibition against gram negative organism P. aeruginosa (21 mm), Methanol extract of B. serrata showed high zone of inhibition against P. vulgaris (18 mm), Acetone extract of B. serrata showed high zone of inhibition against P. aeruginosa (18 mm). The acetone extract of Boswellia serrata plant displayed an excellent antibacterial activity against E.coli and K. pneumoniae with MIC value 12.5µg/µl, The methanol extract of Boswellia serrata plant displayed a good antibacterial activity against E.coli, P. aeruginosa and P. vulgaris with MIC value 25µg/µl, The aqueous extract of Boswellia serrata gum displayed an excellent antibacterial activity against P. aeruginosa and P. vulgaris with MIC value 12.5µg/µl, The petroleum ether extract of Boswellia serrata plant displayed an excellent antibacterial activity against P. aeruginosa with MIC value 12.5µg/µl.


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