A total of 34 plant species belonging to 18 different families, select
ed on the basis of folklore medicinal reports practised by the tribal
people of Western Ghats, India, were assayed for antibacterial activit
y against Escherichia coli, Klebsiella aerogenes, Proteus vulgaris, an
d Pseudomonas aerogenes (Gram-negative bacteria) at 1000-5000 ppm usin
g the disc diffusion method. Of these 16 plants showed activity; among
them Cassia fistula, Terminalia arjuna and Vitex negundo showed signi
ficant antibacterial activity against the tested bacteria. Our finding
s confirm the traditional therapeutic claims for these herbs. (C) 1998
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