期刊
BIOTECHNOLOGY LETTERS
卷 22, 期 7, 页码 585-588出版社
SPRINGER
DOI: 10.1023/A:1005625026623
关键词
citric acid; fed-batch culture; poly-gamma-glutamic acid (PGA)
Fed-batch cultures of Bacillus licheniformis produced poly-gamma-glutamic acid (PGA), a water-soluble biodegradable polymer. PGA reached 35 g l(-1) with a productivity of 1 g l(-1) h(-1) by pulsed-feeding of citric acid (1.44 g h(-1)) and L-glutamic acid (2.4 g h(-1)) when citric acid was depleted from the culture medium.
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