Carbon dioxide evolution by bacteria of the genus Enterobacter that utilize glucose and glycerin

The activity of decarboxylase from two bacterial species belonging to the genus Aerobacter was studied in media containing different carbon sources. It has been shown that A. aerogenes and A. cloacae, in model experiments with media containing glycerol, evolve 1.2-3.5 times less CO2 (42-107 micrograms) as compared with the medium containing glucose (143-149 micrograms). The activity of decarboxylase of the bacterium in media with the tested sources of carbon correlated with the rate of acetoin biosynthesis.