Abstract
Conclusions and Summary
Under partial starvation some aerobic and facultative anerobic bacteria, yeasts, and fungi grow only in a fine, dense layer below the surface of the shake-cultures where the relation between nutrient-content and oxygen is an optimum. Under increasing starvation bacteria become increasingly sensitive against oxygen. Oxygen causes a bacteriostatic effect, the rate of which is in relation to the nutrient content of the medium. The less the medium contains of carbon compounds which may act as oxygen acceptor, the more inhibitory is the action of oxygen on the organisms. Variation in temperature below and above the optimal temperature and exposure to light increases the sensibility against oxygen.
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