The fermentation time was 130 hours, the fermentation unit was 7000 ≤ 8000ug / ml, and the yield of macrotetracycline hydrochloric acid was about 50%. If you have any other questions, please feel free to contact the biotechnology Transfer Center at 01056205725; 13911873657; 18515624029; 13681366571 Zheng Wei email: 380721775@qq.com
