PROCESS FOR PREPARING ANTIBIOTIC A-4696 FACTORS B1,B2,B3,C1A,C3 AND E1

摘要

An antibiotic, A-4696 complex, is produced by the submerged aerobic cultivation of Actinoplanes missouriensis strain ATCC 31680, ATCC 31682 or ATCC 31683 in a culturing medium contg. carbohydrate, nitrogen and inorganic salt. The A-4696 complexes are useful as antibacterial agents and animal growth promoters.