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Research Journal of Microbiology
Year: 2008  |  Volume: 3  |  Issue: 3  |  Page No.: 193 - 197

Anti-Microbial Activity of Tamarindus Indica and Adansonia digita Extracts against E. coli Isolated from Urine and Water Specimens

Sanaa O. Yagoub    

Abstract: The petroleum ether, ethanol and aqueous extracts of the Tamarindus indica and Adansonia digitata were screened for the presence of possible anti-microbial activity using the cup plate agar diffusion method. They were tested against Escherichia coli that isolated from urine and water sources. Each extract was used in concentration of 100, 75, 50 and 25%. E. coli isolated from clinical urine samples showed more susceptibility toward both plant extracts. The ethanol extract of both plants was more effective than petroleum ether and water extracts. Ethanol extract showed variation in the antimicrobial activity toward E. coli that isolated from water and clinical sources, the zones of their inhibition ranged between (15-60 mm). On the other hand, the petroleum ether extract of Adansonia digitata was found to be inactive against all tested organisms. The susceptibility of the microorganisms to the extracts of these plants was compared with each other and with selected antibiotics. Ethanol extract of Tamaridus indica have more powerful antibacterial activity compared with all antibiotics. The antimicrobial activities of these plants were discussed according to their phytochemical components.

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