Anaerobic oxidation of glycerol by Escherichia coli in an amperometric poised-potential culture system | Zendy

Rainer Emde | Zendy; Ann Swain | Zendy; Bernhard Schink | Zendy

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Anaerobic oxidation of glycerol by Escherichia coli in an amperometric poised-potential culture system

Author(s) -

Rainer Emde,

Ann Swain,

Bernhard Schink

Publication year - 1989

Publication title -

applied microbiology and biotechnology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.074

H-Index - 221

eISSN - 1432-0614

pISSN - 0175-7598

DOI - 10.1007/bf00165883

Subject(s) - potassium ferricyanide , glycerol , escherichia coli , electron acceptor , ferricyanide , chemistry , anaerobic exercise , potassium , amperometry , bacteria , nuclear chemistry , electron transport chain , inorganic chemistry , electrode , biochemistry , electrochemistry , biology , organic chemistry , physiology , gene , genetics

Summary Anaerobic growth of Escherichia coli was studied with glycerol as electron source and a three-electrode poised-potential system with potassium ferricyanide as nediator. Similar to fumarate, potassium ferricyanide was used as electron acceptor in batch-culture experiments. In experiments with regulated electrodes, glycerol was degraded completely, and an electron flow of 3.0 to 4.0 mA was obtained. The electron balances were in the range of 98%–107%, and a growth rate of 0.095 h−1 was calculated. These results are discussed with respect to the energetics of iron reduction by E. coli and by other bacteria.

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