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@ARTICLE{Steinhoff:1010189,
author = {Steinhoff, Heiko and Finger, Maurice and Osthege, Michael
and Golze, Corinna and Schito, Simone and Noack, Stephan and
Büchs, Jochen and Grünberger, Alexander},
title = {{E}xperimental k {S} estimation: {A} comparison of methods
for {C}orynebacterium glutamicum from lab to microfluidic
scale},
journal = {Biotechnology $\&$ bioengineering},
volume = {120},
number = {5},
issn = {0368-1467},
address = {New York, NY [u.a.]},
publisher = {Wiley},
reportid = {FZJ-2023-03000},
pages = {1288 - 1302},
year = {2023},
abstract = {Knowledge about the specific affinity of whole cells toward
a substrate, commonly referred to as kS, is a crucial
parameter for characterizing growth within bioreactors.
State-of-the-art methodologies measure either uptake or
consumption rates at different initial substrate
concentrations. Alternatively, cell dry weight or
respiratory data like online oxygen and carbon dioxide
transfer rates can be used to estimate kS. In this work, a
recently developed substrate-limited microfluidic
single-cell cultivation (sl-MSCC) method is applied for the
estimation of kS values under defined environmental
conditions. This method is benchmarked with two alternative
microtiter plate methods, namely high-frequency biomass
measurement (HFB) and substrate-limited respiratory activity
monitoring (sl-RA). As a model system, the substrate
affinity kS of Corynebacterium glutamicum ATCC 13032
regarding glucose was investigated assuming a Monod-type
growth response. A kS of <70.7 mg/L (with $95\%$
probability) with HFB, 8.55 ± 1.38 mg/L with sl-RA,
and 2.66 ± 0.99 mg/L with sl-MSCC was obtained.
Whereas HFB and sl-RA are suitable for a fast initial kS
estimation, sl-MSCC allows an affinity estimation by
determining tD at concentrations less or equal to the kS
value. Thus, sl-MSCC lays the foundation for strain-specific
kS estimations under defined environmental conditions with
additional insights into cell-to-cell heterogeneity.},
cin = {IBG-1},
ddc = {570},
cid = {I:(DE-Juel1)IBG-1-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217) / DFG project 427899901 -
Filamentöse Co-kulturen: vom Screening zur
Bioprozessentwicklung (Co-Pilot) (427899901) / DFG project
427904493 - Communities of niche-optimized strains (CoNoS)
– Ein neues Konzept zur Verbesserung der
biotechnologischen Produktion von kleinen Molekülen
(427904493)},
pid = {G:(DE-HGF)POF4-2171 / G:(GEPRIS)427899901 /
G:(GEPRIS)427904493},
typ = {PUB:(DE-HGF)16},
pubmed = {36740737},
UT = {WOS:000941292000001},
doi = {10.1002/bit.28345},
url = {https://juser.fz-juelich.de/record/1010189},
}