Effect of lysozyme on the oxidation-reduction potentials of M. lysodeikticus cultures

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Abstract
Micrococcus lysodeikticus cultures contain catalase and afford no evidence of peroxide formation. Growth is more luxuriant and the fall in potential is greater in aerated cultures than in stationary aerobic cultures. M. lysodeikticus contains cytochrome which appears not to catalyze anaerobic oxidation-reduction reactions. On addition of lysozyme (egg-white or human tears) to cultures, there is a rapid fall in potential followed by a rise before lysis is complete. The older the culture the slower is the fall and subsequent rise in potential when lysozyme is added. The fall in potential produced by lysozyme is tentatively ascribed to an increase in the enzymic activity (e.g., dehydrogenase) of the partially lysed bacteria during lysis.

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