Biopolymers and cell. 1995; 11 (5): 79 - 83

ISOLATION AND CHARACTERIZATION OF MUTANTS OF PROPIONIBACTERIUM SHERMANII OF PRODUCER OF VITAMIN B,2

P. N. Dimitrava

N-inelhyl-N-nitro-N-nitrozoguanin effective on Propionibaclerium shermanii 128. The time define for exposition with mutagenes 30 and 60 min. Propionibacterium shermanii 1818 sinthezies to 45 mg/cm3 vitamin Bi2. Generation, isolation and characterization of auxotrophic mutants of Propionibacterium.