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Ammonium and phosphate limitation in 1,3-propanediol production by Klebsiella pneumoniae
被引:10
作者:
Zheng, Zong-Ming
[1
]
Xu, Yun-Zhen
[2
]
Wang, Ti-Peng
[1
]
Dong, Chang-Qing
[1
]
Yang, Yong-Ping
[1
]
Liu, De-Hua
[2
]
机构:
[1] N China Elect Univ, Sch Renewable Energy, Natl Engn Lab Power Generat Equipment, Beijing 102206, Peoples R China
[2] Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
关键词:
Ammonium limitation;
Fermentation;
Klebsiella pneumoniae;
Phosphate limitation;
1,3-Propanediol;
MICROBIAL-GROWTH;
FERMENTATION;
GLYCEROL;
SUBSTRATE;
CULTURE;
PATHWAY;
D O I:
10.1007/s10529-009-0150-y
中图分类号:
Q81 [生物工程学(生物技术)];
Q93 [微生物学];
学科分类号:
071005 ;
0836 ;
090102 ;
100705 ;
摘要:
Excretion of 1,3-propanediol (1,3-PD) by K. pneumoniae was compared in ammonium- and phosphate-limited chemostat cultures running with an excess of glycerol. 59 and 43% catabolic flux were directed to 1,3-PD in ammonia-limited cultures and phosphate-limited cultures at dilution rate of 0.1 h(-1), respectively. Ammonia-limited fed-batch cultures produced 61 g 1,3-PD l(-1) and a total of 15 g l(-1) organic acid in 36 h. However, phosphate-limited fed-batch cultures excreted 61 g lactate l(-1) and 44 g 1,3-PD l(-1).
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页码:289 / 294
页数:6
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