Modeling of Growth Kinetics
257
A
B
Glucose
Glucose
Figure
7.7
Illustration
of
the
“bottle-neck”
of
the
oxidative
metabolism in
S. cerevisiae.
A. Excess oxidative capacity, and
therefore
completely
oxidative
metabolism.
B. Limited oxidative capacity. The
excess carbon flux is converted to
fermentative products.
Figure 7.8 Chemostat culture of
S. cerevisiae.
The experimental data are from Rieger
et al.
(1983). The
lines are model simulations with the parameters specified in Table 7.4.
A. The concentrations of glucose ('*■), biomass (■ ) and ethanol ( • ) as function of the dilution rate. All
concentrations are given as g L'1.
B.
The specific carbon dioxide formation rate
(•)
and the specific oxygen uptake rate
(■),
both in
mmoles (g DW h)'1. The respiratory quotient RQ is also shown (* ).
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