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The effect of hydrogen peroxide on the germination, colony formation and structure of spores of Clostridium bifermentans was examined. Treatment with 0.35 M-hydrogen peroxide increased the germination rate at 25 degrees C but increasing the temperature or concentration of hydrogen peroxide decreased both the germination rate and colony formation. The presence of Cu2+ increased the lethal effect of hydrogen peroxide on colony formation as much as 3000-fold. Pre-incubation of spores with Cu2+ before treatment with hydrogen peroxide produced a similar increase, but this could be eliminated by washing the spores with dilute spores--apparently from the coat--and treatment with dithiothreitol, which also removes spore-coat protein, increased the lethal effect of hydrogen peroxide 500-fold, suggesting that spore-coat protein has a protective effect against hydrogen peroxide.
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Bayliss et al. (1976) studied this question.
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