IN-SITU SEPARATION BY MACROSPORE-ANIONIC EXCHANGE RESIN DURING RECOMBINANT E. coli CULTIVATION FOR hEGF PRODUCTION
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IN-SITU SEPARATION BY MACROSPORE-ANIONIC EXCHANGE RESIN DURING RECOMBINANT E. coli CULTIVATION FOR hEGF PRODUCTION
CIESC JournalIssue 3, Pages: 493-496(2004)
作者机构:
1. 浙江大学生命科学学院,浙江,杭州,310029
2. 浙江大学生物工程研究所,浙江,杭州,310027
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Online First:25 March 2004,
Published:25 March 2004
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CHEN Xin’ai, XU Zhinan, FAN Limei, et al. IN-SITU SEPARATION BY MACROSPORE-ANIONIC EXCHANGE RESIN DURING RECOMBINANT E. coli CULTIVATION FOR hEGF PRODUCTION[J]. CIESC Journal, 2004, (3): 493-496.
DOI:
CHEN Xin’ai, XU Zhinan, FAN Limei, et al. IN-SITU SEPARATION BY MACROSPORE-ANIONIC EXCHANGE RESIN DURING RECOMBINANT E. coli CULTIVATION FOR hEGF PRODUCTION[J]. CIESC Journal, 2004, (3): 493-496.DOI:
IN-SITU SEPARATION BY MACROSPORE-ANIONIC EXCHANGE RESIN DURING RECOMBINANT E. coli CULTIVATION FOR hEGF PRODUCTION
Production and accumulation of toxic by-products such as acetic acid can inhibit the growth of recombinant cells and the expression of exogenous gene in E.coli.An anionic exchange resin
A-D3-1
which is high in adsorption selectivity and capability for acetic acid
was screened from a variety of resins based on its physical and chemical properties.On the scale of shake flask culture
the addition of 1.0g resin per 30ml medium was insignificant for the cell growth
however
it could improve the hEGF expression significantly. The batch culture in 2.5L fermentor showed that in-situ adsorption of acetic acid by anionic exchange resin could enhance the expression level of interested protein and reduce the fermentation period by 2 hours. And up to 10% improvement of hEGF (human epidermal growth factor)volumetric productivity (225.0mg8226;L-1) could be achieved by supplementing 3.3g resin per 100ml medium.