Peculiarities of potentiometric control of biological redox processes and possible research into their kinetics

The difficulties of interpreting potentiometric measurements in microbiological media are connected with the specific features of redox processes therein. The peculiarity may be reflected either in the low speed of electrode processes, or in the stationary (and not equilibrium) character of the proc...

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Published inBioelectrochemistry and Bioenergetics Vol. 2; no. 1; pp. 26 - 34
Main Authors Isaeva, G.S., Kantere, V.M., Pisarevsky, A.M.
Format Journal Article
LanguageEnglish
Published Elsevier S.A 1975
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Summary:The difficulties of interpreting potentiometric measurements in microbiological media are connected with the specific features of redox processes therein. The peculiarity may be reflected either in the low speed of electrode processes, or in the stationary (and not equilibrium) character of the processes on the electrode | solution boundary. It is possible to differentiate these two cases by the polarization (depolarization) curves of indifferent electrodes in media and also by comparison of the indications of Pt and redox glass electrodes therein, as is illustrated on Candida utilis and Candida guillirmondii. Potentiometric and polarization measurements in Candida utilis also point to similar concentration of redox components on the cell-medium boundary.
ISSN:0302-4598
DOI:10.1016/0302-4598(75)80003-1