EFFECT OF HYDROSTATIC PRESSURE ON SUCCINIC, FORMIC, AND MALIC DEHYDROGENASES IN ESCHERICHIA COLI

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Abstract
A method and apparatus for the measurement of dehydrogenase activity under hydrostatic pressure are described. The rate of succinic, formic, and malic dehydrogenase activity,as determined by methylene blue reduction, in resting cells of E. coli decreases with increasing hydrostatic pressure, while the endogenous methylene blue reduction increases with increasing hydrostatic pressure. Application of pressure does not decrease the activity of the 3 dehydrogenases to the same degree.