Applied and Natural Science Foundation
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Journal of Applied and Natural Science
An International Journal | Print ISSN: 0974-9411 | Online ISSN: 2231-5209
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Journal of Applied and Natural Science 4(1):47-50(2012)
Antibacterial activity of leaf extracts of some selected traditional medicinal plants of Uttarakhand, North East India
Suneel Kumar Singh*, Ritu Vishnoi, Gulshan Kumar Dhingra1 and Kunal Kishor2
Department of Biotechnology, Modern Institute of Technology, Dhalwala, Rishikesh – 249 201 (Uttarakhand), INDIA 1Department of Botany, Govt. P.G. College, Uttarkashi (Uttarakhand), INDIA 2Department of Microbiology, S.G.R.R. (ITS), Dehradun (Uttarakhand), INDIA *Corresponding author. E-mail:
Abstract : Screenings of methanolic leaf extracts of nine medicinal plants (Cotinus coggygria, Adhatoda vesica, Argemone mexicana, Zanthoxylum armatum, Berberis asiatica, Corissa opaca, Euphorbia hirta, Cassio fistula and Ricinus communis), belonging to selected areas of Uttarakhand, were tested against seven bacterial strains (Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Enterobactor aerogenes, Klebsiella pneumoniae, Proteus vulgaris and Pseudomonas aeruginosa) by disc diffusion method. Leaf extracts of R. communis, B. asiatica and C. opaca showed high (13 – 23) effect on all the bacterial strains while E. hirta, Z. armatum and A. vesica exhibits minimum (6 – 15) effects. Remaining leaf extracts of plants were found moderately (10 - 19) effective.

Keywords : Antibacterial activity, Medicinal plants, Methanol extracts
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