申请人:Pfizer Products Inc.
公开号:EP1369490A1
公开(公告)日:2003-12-10
A method of preparing a composition containing hygromycin A and epi-hygromycin, wherein the ratio of hygromycin A to epi-hygromycin is at least 10:1, which comprises fermenting Streptomyces hygroscopicus in media having a pH less than 6.9 at a temeperature ranging from 25°C to 35°C.
一种制备含百日咳霉素 A 和表-百日咳霉素的组合物的方法,其中百日咳霉素 A 与表-百日咳霉素的比例至少为 10:1,该方法包括在 pH 值小于 6.9 的培养基中,在 25°C 至 35°C 的温度范围内发酵吸湿链霉菌。