微拟球藻在混合营养条件下的生长特性及二十碳五烯酸的产生
Growth characteristics and eicosapentaenoic acid production by Nannochloropsis sp. in mixotrophic conditions.
作者信息
Xu Fang, Hu Han-hua, Cong Wei, Cai Zhao-ling, Ouyang Fan
机构信息
State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, PO. Box 353, PR China.
出版信息
Biotechnol Lett. 2004 Jan;26(1):51-3. doi: 10.1023/b:bile.0000009460.81267.cc.
Nannochloropsis sp. was grown under mixotrophic conditions with 30 mM glucose as carbon source, reaching 507 mg dry wt l(-1) after 8 d. This was 1.4-fold of that obtained under photoautotrophic conditions. Under mixotrophic and photoautotrophic cultivations, the net photosynthetic rate of Nannochloropsis sp. did not change but the respiratory rate increased in the mixotrophic cultivation. The yield of eicosapentaenoic acid was 22 mg l(-1) in the mixotrophic cultivation and 20 mg l(-1) under the photoautotrophic cultivation.
微拟球藻在以30 mM葡萄糖作为碳源的混合营养条件下培养，8天后干重达到507 mg l(-1)。这是光自养条件下获得干重的1.4倍。在混合营养和光自养培养条件下，微拟球藻的净光合速率没有变化，但在混合营养培养中呼吸速率增加。在混合营养培养中二十碳五烯酸的产量为22 mg l(-1)，在光自养培养下为20 mg l(-1)。
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