麦迪霉素 化学药品说明书麦迪霉素片麦迪霉素胶囊
1)将麦迪霉素发酵液先调至酸性,用陶瓷膜过滤器过滤,过滤完成后,用1〜2倍体积的pH已调至4.0〜5.0的纯化水溶液顶水,全收集滤过液; 2)将上述滤液调至碱性,加入乙酸丁酯萃取,乙酸丁酯的体积为滤液体积10%〜15%; 3)将上述萃取液在酸溶液中转相; 4)通过碱性溶液将转相液pH调至8.0〜8.5,加入为转相液体积10 %〜15 %的乙酸丁酯45〜50°C的条件下萃取,得到萃取液后,再在常温下逐渐滴加pH为6.0〜8.0的纯化水至有大量晶体析出; 5)晶体用离心机分离后,用潮晶质量1〜2倍体积50 %浓度的乙酸丁酯溶液洗涤晶体,干燥得到麦迪霉素成品。
Antibacterial
Midecamycin inhibits the majority of streptococci , staphylococci , and strains of Haemophilus and Listeria at concentrations of less than 3.1 μg/mL. Midecamycin is a 16-membered macrolide. Midecamycin is a new macrolide antibiotic, which is produced by Streptomyces mycarofaciens .