Methods: Antibacterial potency of methanol, acetone, ethyl acetate and petroleum spirit extracts of Nymphaea
nouchali flower has been tested against four human pathogenic bacteria Bacillus subtilis (FO 3026) Escherichia coli
(IFO 3007), Klebsiella pneumonia (ATTC 10031) and Sarcina lutea (IFO 3232) and one plant pathogenic bacterium
Xanthomonas campestris (IAM 1671) by disc diffusion assay. Zone of inhibition produced by different extracts
against the test bacteria was measured and compared with standard antibiotic disc.