The Respiration of Spermine-resistant Saccharomyces cerevisiae*

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Abstract
Spermine-resistant Saccharomyces cerevisiae has lower respiratory activity and multiplies slower than the original yeast. Its respiratory activity can be increased prior to the catalase activity when transferred to the appropriate growth medium to the level of the original strain. The presence of glucose, mannose fructose or sucrose in the growth medium suppressed the development of respiratory activity of the original yeast. Glycerol, pyruvate, ethanol and acetate suppressed multiplication of the original yeast. From these results it is concluded that the characteristic of the spermine-resistant yeast is the retarded multiplication. The main factor which hinders the development of its respiratory activity is the retarded disappearance of glucose from the growth medium caused by the decreased multiplication.

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