Abstract

Effect of phenacylpyridinium bromide (1a) and p-chlorophenacylpyridinium bromide (1b) was investigated on the soil bacterial population by plate dilution method. Based on the average total bacterial count at different concentrations of salts, it was observed that salt 1b was more bactericidal than salt 1a and deleterious effectivity increased with the increasing level. The greater antibacterial effect of salt 1b may probably be attributed to the presence of chlorine atom attached to benzene ring.

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