Die Auswirkung von Tensiden und das Verhalten von Bakterien gegen‐über grenzflächenaktiven Verbindungen

An investigation was made into the effects of seven anion-active tensides and one non-ionic tenside on the growth and respiration of 19 strains of the bacteria genera Proteus, Pseudomonas, Aerobacter and Sarcina. A nutrient broth with phosphate buffer and partly glucose addition was used as the culture medium. Tenside was added either at the beginning of tests in the lag-phase of cultures or during the logarithmic growth phase. In addition, the development of resistance or adaptation were tested by establishing subcultures. The inhibitory effect of tensides depends on the combination of tenside/species of bacteria, gram-positive bacteria being more sensitive and the inhibitory effect being lower in their logarithmic growth phase. The time course of the inhibition of respiration after the addition of tenside to the medium shows different types of inhibition and adaptation, considerably extended lag-phases occurring frequently.