VERFAHREN ZUR GEWINNUNG VON PHENYLALANIN-DEHYDROGENASE ENTHALTENDEN MIKROORGANISMEN, MIKROORGANISMEN, DIE IN IHNEN ENTHALTENE PHENYLALANIN-DEHYDROGENASE UND DEREN VERWENDUNG ZUR HERSTELLUNG VON L-(ALPHA)-AMINOSAEUREN

摘要

1. Process for obtaining microorganisms containing phenylalanine dehydrogenase by aerobic culture of microorganism-containing samples in aqueous nutrient media which contain a source of carbon, nitrogen and mineral salts and thiamine, characterized in that the samples are first incubated in a nutrient medium with an alkali metal propionate content of 0.1 to 0.5 g/l, colony patterns formed are then transinoculated onto a nutrient medium which contains L-phenylalanine or L-phenylalanine amide as an inducer for the formation of phenylalanine dehydrogenase, the system is incubated and the microorganisms which grow in both nutrient media are selected.