Abstract
A change in the respiratory activity (RA) of the resistant to cyanide bacteria Pseudomonas fluorescens under the pulsed electric field treatment has been found experimentally. The bacteria reaction to the field treatment (rectangular impulses with the duration of 1 ms, voltage of 20 V, and frequency of 100 Hz) varied from the RA suppression of active culture to restoration and even stimulation of RA in cells with the decreased respiratory function, caused by the cyanide introduction. The interconnection of energetic membrane processes with the electrosurface properties of biocolloids has been demonstrated: The electrokinetic potential had been varied simultaneously with the respiratory activity change. Theoretical analysis of the experimental data indicates the change of quantity of active respiratory centers in cells under the influence of the pulsed electric field. These changes have reversible character. Depending on the state of bacteria, the processes of inhibition or restoration of the respiratory centers by the pulsed electric field can be observed.
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