Vishal Kumar Deshwal*
Department of Microbiology, Doon (P.G.) Paramedical College, Dehardun-248001 (India)
*e-mail id: vishal_deshwal@rediffmail.com
Abstract : Aim of this study was to evaluate the antibacterial activity of different extracts of Piper nigrum L.against Salmonella typhi. Three extracts such as aqueous, ethanolic and chloroform extracts of Piper nigrum seeds were prepared. 4 different concentrations such as 15, 20, 25, 30 mg/ml of them were made. Antimicrobial activity was determined by Agar well diffusion method. Results showed that 30 mg/ml of aqueous, ethanol and chloroform extract of Piper nigrum gave 23.2±0.2, 22.4±0.2, 22.2±0.4 mm of inhibition zones, respectively. Aqueous extract was observed to be best among all extract of Piper nigrum.
Keywords : Piper nigrum, Shigella dysenteriae
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