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›› 2011, Vol. 11 ›› Issue (1): 113-116.

• 生化工程专栏 • 上一篇    下一篇

根癌土壤杆菌产辅酶Q10的补料分批发酵工艺

金赛 徐俭 张梁 丁重阳 石贵阳   

  1. 江南大学生物工程学院生物资源与生物能源研究中心 江南大学生物工程学院生物资源与生物能源研究中心 江南大学生物工程学院生物资源与生物能源研究中心 江南大学生物资源和生物能源研究中心
  • 收稿日期:2010-10-08 修回日期:2010-12-10 出版日期:2011-02-20 发布日期:2011-02-20
  • 通讯作者: 金赛

Production of Coenzyme Q10 in Fed-batch Fermentation by Agrobacterium tumefaciens

JIN Sai, XU Jian, ZHANG Liang, DING Chong-yang, SHI Gui-yang,   

  1. School of Biotechnology, Jiangnan University School of Biotechnology, Jiangnan University School of Biotechnology, Jiangnan University Center for Bioresource and Bioenergy,Jiangnan University
  • Received:2010-10-08 Revised:2010-12-10 Online:2011-02-20 Published:2011-02-20
  • Contact: JIN Sai,

摘要: 以根癌土壤杆菌(Agrobacterium tumefaciens Q14)为生产菌株,在15 L发酵罐内对补料分批发酵生产辅酶Q10的工艺进行优化. 通过逐步添加限制性营养物质,考察其对发酵的影响,获得了较优的补料分批发酵工艺,即流加葡萄糖和KH2PO4溶液,将葡萄糖和磷浓度分别控制在5~15 g/L和50~120 mmol/L,同时,在30和50 h各加入5%(j)新鲜发酵培养基. 在此工艺条件下,发酵周期为84 h,菌体量达87.2 g/L,辅酶Q10产量高达2166.2 mg/L,生产强度为25.8 mg/(L×h),比分批发酵提高了7.8倍.

关键词: 根癌土壤杆菌, 辅酶Q10, 补料分批发酵

Abstract: The production of coenzyme Q10 by Agrobacterium tumefaciens Q14 was studied under fed-batch fermentation by adding restrictive nutrient substances in a 15 L fermentor. The best process of fed-batch fermentation was obtained by stepwise optimization in order to maintain glucose concentration between 5 and 15 g/L and phosphorus concentration between 50 and 120 mmol/L. 5%(j) fresh medium was added at 30 and 50 h, respectively, to satisfy the growth of cells. The results showed that the fermentation period was 84 h, a highest biomass of 87.2 g/L, coenzyme Q10 production of 2166.2 mg/L and productivity 25.9 mg/(L×h) which increased 7.8 times compared with batch fermentation.

Key words: Agrobacterium tumefaciens, coenzyme Q10, fed-batch fermentation

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