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@ARTICLE{Takors:34923,
author = {Takors, R.},
title = {{M}odel-based analysis and optimization of an {ISPR}
approach using reactive extraction for pilot scale
{L}-{P}henylalanine production},
journal = {Biotechnology progress},
volume = {20},
issn = {8756-7938},
address = {Malden, MA},
publisher = {Wiley},
reportid = {PreJuSER-34923},
pages = {57 - 64},
year = {2004},
note = {Record converted from VDB: 12.11.2012},
abstract = {Based on experimental data from fermentation runs, as well
as from L-phenylalanine (l-Phe) separation studies, a simple
model is presented that describes the total ISPR approach
for on-line L-Phe separation. While fermentation process
modeling via a macrokinetic model revealed an L-Phe
inhibition constant of 20 +/- 1.35 g/L using recombinant E.
coli cells, the reactive-extraction process modeling
identified the L-Phe cation diffusion in the aqueous donor
film and the transport of the lowly soluble carrier/L-Phe
complex in the aqueous acceptor film as the most dominant
transfer steps. The corresponding mass transfer coefficients
were estimated as k(PheD) = 128 x 10(-7) cm/s (extraction)
and k(CPheA) = 178 x 10(-5) cm/s (back-extraction).
Simulation studies were performed for the total ISPR
approach, which gave hints for strategies of further process
optimization.},
keywords = {Algorithms / Bioreactors: microbiology / Computer
Simulation / Escherichia coli: growth $\&$ development /
Escherichia coli: metabolism / Fractional Precipitation /
Industrial Microbiology: methods / Kinetics / Models,
Biological / Models, Chemical / Phenylalanine: biosynthesis
/ Phenylalanine: chemistry / Phenylalanine: isolation $\&$
purification / Pilot Projects / Quality Control /
Ultrafiltration: methods / Phenylalanine (NLM Chemicals) / J
(WoSType)},
cin = {IBT-2},
ddc = {570},
cid = {I:(DE-Juel1)VDB56},
pnm = {Biotechnologie},
pid = {G:(DE-Juel1)FUEK256},
shelfmark = {Biotechnology $\&$ Applied Microbiology / Food Science $\&$
Technology},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:14763824},
UT = {WOS:000188861300008},
doi = {10.1021/bp0257473},
url = {https://juser.fz-juelich.de/record/34923},
}