[Protein hydrolysates, obtained from crustaceans by an electrochemical method, as a basis for microbiological culture media].

The utility of protein hydrolysates extracted electrochemically from crustaceans (Gammarus pulex and shrimp) as major components of microbiological nutrient media was demonstrated. Saprophytic soil bacteria of the genera Bacillus and Pseudomonas and the family Enterobactericeae displayed a good growth and typical morphology of their colonies on the experimental media in question.

[Immobilizing of Bacillus mucilaginosus--a producer of exopolysaccharides, on chitin].

The bacteria Bacillus mucilaginosus were immobilized on chitin sorbents. Exopolysaccharides produced by B. mucilaginosus were capable of sorbing efficiently copper ions.