- Volume 47 Issue 3
Effects of Carbon and Nitrogen Sources on Immunosuppressant Mycophenolic Acid Fermentation by Penicillium brevi-compactum
Penicillium brevi-compactum을 이용한 면역억제제 Mycophenolic Acid 발효에서 탄소원 및 질소원의 영향
- Rho, Yong-Taek (Department of Biomedical Science, College of Health and Industry, Youngdong University)
- 노용택 (영동대학교 보건산업대학 의생명과학과)
- Received : 2011.09.14
- Accepted : 2011.09.27
- Published : 2011.09.30
Mycophenolic acid blocking the synthesis of xanthosine monophosphate is a nonnucleoside inhibitor of inosine monophosphate dehydrogenase. Therefore mycopholoic acid is a drug currently used as immunosuppressive agent in transplantation of heart, kidney and liver. Mycophenolic acid has been industrially produced through fermentation process by fungus Penicillium brevi-compactum. In this study, the profile of mycophenolic acid fermentation was observed in 5L-jar fermentor to investigate the utilization of carbon and nitrogen sources and the production of mycophenolic acid. It was investigated that what kind of carbon sources was better to cell growth and mycophenolic acid production. Fructose was the best carbon source for mycophenolic acid fermentation, but it is the most expensive one. Thereafter molasses containing sucrose as the supply source of fructose was confirmed to be the best carbon source for the industrial production. Use of molasses increased the fermentation yield of mycophenolic acid more than two times higher than glucose. It was confirmed that urea was the best inorganic nitrogen source, which did not give rise to sudden drop of culture pH. Addition of urea increased the fermentation yield of mycophenolic acid about 3.6 times higher than addition of ammonium nitrate as control. Casein, peptone and casamino acid originated from milk protein increased the fermentation yield of mycophenolic acid about 3.4 times higher than control. Peptone and casamino acid, which are casein hydrolysates, increased cell growth considerably as well.
Penicillium brevi-compactum;fermentation;immunosuppressant;mycophenolic acid
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