[Changes in redox potentials during transitional processes in pure and mixed cultures of Escherichia coli and Serratia marcescens].

There were studied transitional processes accompanying the beginning of growth under glucose addition and stopping of growth under glucose exhaustion in pure and mixed aerobic cultures of Escherichia coli and Serratia marcescens. Continued record of Eh, pH, and CO2 showed that these processes sharply differ from each other in their character in pure and mixed cultures, it is particularly related to the changes of the redox potential. There is no characteristic change in the redox potential in pure culture of E. coli at growth termination in the case when S. marcescens cells are present in the culture.