Purpose To investigate the possibility of antibacterial activity of 7 synthetic nicotinamide compounds against 3 kinds of pathogenic bacteria by MTT assay.
Methods We evaluated bactericidal activity of 7 synthetic nicotinamide compounds against Xanthomonas vesicatoria, Ralstonia solanacearum and Pseudomonas syringae by MTT assay and plate diffusion method. MTT assay performed to identify bactericidal activities of N-(3-(trifluoromethyl) phenyl) nicotinamide.
Result The EC50 of N-(3-(trifluoromethyl) pheny) nicotinamide against X. vesicatoria, R. solanacearum and P. syringae by MTT assay were 3.87, 2.05 and 10.33 mg/mL.
Conclusion The results indicated that MTT assay was more effective than plate diffusion method in evaluating bactericidal activity, and has higher value on application.