[Production of exocellular amylase by pseudomonads]

Over 400 strains of Pseudomonads, when cultivated on starch media, were examined with respect to their capacity for extracellular production of amylases. Seven strains were selected that accumulated up to 6 g/l dry biomass and secreted amylase with an activity of up to 5.4 mg maltose/ml medium. The total and specific growth rate of the cultures was measured. Their physiological and biosynthetic activity in the course of development was evaluated. The economic coefficient was calculated. The dependence of the above parameters on the substrate concentration was demonstrated.