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@ARTICLE{Zelic:34886,
author = {Zelic, B. and Gostovic, S. and Vuorilehto, K. and
Vasic-Racki, D. and Takors, R.},
title = {{P}rocess strategies to enhance pyruvate production with
recombinant {E}scherichia coli: {F}rom repetitive fed-batch
to in situ product recovery with fully integrated
electrodialysis},
journal = {Biotechnology $\&$ bioengineering},
volume = {85},
issn = {0006-3592},
address = {New York, NY [u.a.]},
publisher = {Wiley},
reportid = {PreJuSER-34886},
pages = {638 - 646},
year = {2004},
note = {Record converted from VDB: 12.11.2012},
abstract = {Using the pyruvate production strain Escherichia coli
YYC202 IdhA::Kan different process alternatives are studied
with the aim of preventing potential product inhibition by
appropriate product separation. This strain is completely
blocked in its ability to convert pyruvate into acetyl-CoA
or acetate, resulting in acetate auxotrophy during growth in
glucose minimal medium. Continuous experiments with cell
retention, repetitive fed-batch, and an in situ product
recovery (ISPR) process with fully integrated
electrodialysis were tested. Although the continuous
approach achieved a high volumetric productivity (Q(P)) of
110 g L-1 d(-1), this approach was not pursued because of
long-term production strain instabilities. The highest
pyruvate/glucose molar yield of up to 1.78 mol mol(-1)
together with high Q(P) 145 g L-1 d(-1) and high pyruvate
titers was achieved by the repetitive fed-batch approach. To
separate pyruvate from fermentation broth a fully integrated
continuous process was developed. In this process
electrodialysis was used as a separation unit. Under optimum
conditions a (calculated) final pyruvate titer of >900 mmol
L-1 (79 g L-1) was achieved. (C) 2004 Wiley Periodicals,
Inc.},
keywords = {J (WoSType)},
cin = {IBT-2},
ddc = {570},
cid = {I:(DE-Juel1)VDB56},
pnm = {Biotechnologie},
pid = {G:(DE-Juel1)FUEK256},
shelfmark = {Biotechnology $\&$ Applied Microbiology},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000189158400008},
doi = {10.1002/bit.108.20},
url = {https://juser.fz-juelich.de/record/34886},
}