[Efficiency of glucose utilization by Gluconobacter oxydans]

The dynamics of growth and acid production in Gluconobacter oxydans cultures at various glucose concentrations has been investigated. Dinitrophenol (10-4 M) was shown to have effect on hexonic acids formation by the growing culture and resting cells of G. oxydans, as well as on the values of Y0. G. oxydans molar growth yield for glucose have been calculated. Oxidative transformation of glucose was shown to be not involved in energy supply of processes connected with the reproduction of G. oxydans. Glucose concentration in the growth medium determines the efficiency of utilization of this carbon and energy source.