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Int. J. Mol. Sci. 2011, 12(10), 6385-6396; doi:10.3390/ijms12106385

Assessment of Tamarindus indica Extracts for Antibacterial Activity

1
Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa
2
Department of Botany, Delta State University, Abraka, 330106, Delta State, Nigeria
*
Author to whom correspondence should be addressed.
Received: 30 August 2011 / Revised: 19 September 2011 / Accepted: 22 September 2011 / Published: 26 September 2011
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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Abstract

Ethanolic and aqueous (hot and cold) extracts of the fruit pulp, stem bark and leaves of Tamarindus indica were evaluated for antibacterial activity, in vitro, against 13 Gram negative and 5 Gram positive bacterial strains using agar well diffusion and macro broth dilution techniques, simultaneously. The fruit pulp extracts exhibited a wide spectrum of activity; the cold water extract against 95.5% of the test bacterial strains; and the hot water and ethanolic extracts against 90.9% and 86.4%, respectively. In contrast the cold water extract of the leaves and stem bark, each was active against 16.7%; while the ethanolic extract of each was active against 75% of the test strains. The minimum inhibitory concentrations (MIC) ranged from 7.81 mg/mL against Bacillus subtilis ATCC 6051 to 31.25 mg/mL against Escherichia coli ATCC 11775; and the minimum bactericidal concentration (MBC) ranged from 125 mg/mL against Pseudomonas aeruginosa ATCC 10145 to 250 mg/mL against Bacillus subtilis ATCC 6051.
Keywords: Tamarind; Tamarindus indica; extracts; antibacterial activity Tamarind; Tamarindus indica; extracts; antibacterial activity
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Nwodo, U.U.; Obiiyeke, G.E.; Chigor, V.N.; Okoh, A.I. Assessment of Tamarindus indica Extracts for Antibacterial Activity. Int. J. Mol. Sci. 2011, 12, 6385-6396.

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