THEORETICAL-ANALYSIS OF POTENTIAL VARIATIONS OF ESCHERICHIA-COLI-K12 CULTURES IN PRESENCE OF AN ELECTRON CARRIER

  • 1 January 1979
    • journal article
    • research article
    • Vol. A130  (3) , 295-313
Abstract
O2 consumption and reductive hydrogenation of lipoic acid, linked to the exponential growth of E. coli in a minimal medium containing a non-limiting amount of glucose, produce reproducible and intelligible variations of the electric potential between a gold electrode and a reference electrode. A simple quasi-stationary mathematical model leads to analytical expressions of the electric potential in function of the experimental conditions and of time. The effects of active or passive transport of lipoic acid are distinguishable. An experimental method results in the detection of bacterial activity.

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