[Storage of Pseudomonas strains degrading the surfactants].

The survival rate and the destruction activity of Pseudomonas strains decomposing anionic and ampholytic surfactants were studied in the course of their storage for a long period of time. The strains were shown to remain viable and active after being freeze-dried for a year. Therefore, lyophilisation can be recommended as the main method of storage for bacterial strains decomposing the following surfactants: sulfoethoxylate, sulfonate, cyclimide, and amidobetaine.

[Bacterial destruction of anionic sulfoethoxylate surfactants].

A Pseudomonas putida strain G was isolated and its activity in the destruction of sulfoethoxylates (surfactants) was studied as a function of the cultivation conditions. Ultrastructural changes were found in the cells utilizing sulfoethoxylates. Sulfoethoxylates were found to be decomposed by P.

[Properties of a bacterial enzyme preparation of alkylsulfatase].

A preparation of primary alkyl sulfatase was obtained from the culture of Pseudomonas species 2T/1. It can hydrolyze alkyl sulfates, which belong to anion surface-active compounds, to sulfate ion and fatty alcohol, and as a result the harmful for biosphere property of the surface activity is gone. pH and temperature of the incubation mixture, the presence of ions of some bivalent metals and components of synthetic detergents (SD), composition of the buffer mixture and substrate concentration affect the rate of sodium dodecylsulfate (SDS) hydrolysis.