Effect of the catholyte of nutrient medium on cell growth at extremal temperatures

The growth of Escherichia coli cells in media whose properties were changed by the action of direct current in the cathode compartment of a diaphragm electrolyzer was studied. For this purpose, the growth medium was prelimina rily treated using different methods of medium preparation under different treatment conditions. The biological activity of medium was estimated by me asuring the effect of these solutions on cell growth. Cells were cultivated under extremal temperature conditions, 20 degrees C and 42 degrees C (opti mal temperature 37 degrees C). It was shown that at low temperatures, the c ell growth considerably increases as compared to control. At elevated tempe ratures, the acceleration of cell death occurred, whereas in the control th e decelleration of cell growth and partial cell death were observed.