The Effect of Oxygen on the Germination and Outgrowth of Clostridium butyricum Spores and Changes in the Oxidation-Reduction Potential of Cultures |
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Authors: | F Douglas G J Rigby |
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Institution: | Department of Pharmacy, University of Manchester, Manchester, England |
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Abstract: | S ummary . The Eh fall observed during incubation of Clostridium butyricum spores occurred during germination and emergence, not during the log phase; it is attributed to the H2 tension resulting from metabolism. When the O2 tension in the medium was increased, the Eh fell only after a few spores outgrew and replicated; germination of remaining spores then followed. It is suggested that the few cells able initially to metabolize can (a) elaborate NADH etc. which reduce the O2 tension to a level non-inhibitory for the remaining spores, and (b) produce the H2 tension recorded by the Pt electrode. |
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