The following data were obtained during batch growth of the Saccharomyces Cerevisiae at its optimal temperature on a fully define synthetic medium with glucose as the growth limiting nutrient. The organisms were observed to die exponentially. a) Use the data to determine if lag phase is existed? Explain your answer. b) What is the maximum specific growth rate (Hmax) and culture doubling time (ta) of the organism? c) Estimate the volumetric rate of substrate consumption (r,) at hour 3 given that the value of maintenance coefficient (m,) is 0.036 g glucose/g biomass.h and monod constant, Ks is 2 g/l.

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The following data were obtained during batch growth of the Saccharomyces Cerevisiae at its
optimal temperature on a fully define synthetic medium with glucose as the growth limiting
nutrient. The organisms were observed to die exponentially.
a) Use the data to determine if lag phase is existed? Explain your answer.
b) What is the maximum specific growth rate (µmax) and culture doubling time (ta) of the
organism?
c) Estimate the volumetric rate of substrate consumption (r;) at hour 3 given that the value of
maintenance coefficient (m.) is 0.036 g glucose/g biomass.h and monod constant, Ks is 2 g/l.
BTEN 2314 Biochemical Engineering Fundamentals
Glucose conc. (g/l)
Time (hour)
Biomass conc. (g/l)
0.1
20
1
0.37
19.3
1.5
0.70
18.6
2
1.32
17.0
2.5
2.52
14.1
3
4.89
9.2
3.5
8.99
4.1
4.0
8.59
1.0
5
7.85
6
7.35
8
6.20
10
5.15
15
3.45
20
2.20
Transcribed Image Text:The following data were obtained during batch growth of the Saccharomyces Cerevisiae at its optimal temperature on a fully define synthetic medium with glucose as the growth limiting nutrient. The organisms were observed to die exponentially. a) Use the data to determine if lag phase is existed? Explain your answer. b) What is the maximum specific growth rate (µmax) and culture doubling time (ta) of the organism? c) Estimate the volumetric rate of substrate consumption (r;) at hour 3 given that the value of maintenance coefficient (m.) is 0.036 g glucose/g biomass.h and monod constant, Ks is 2 g/l. BTEN 2314 Biochemical Engineering Fundamentals Glucose conc. (g/l) Time (hour) Biomass conc. (g/l) 0.1 20 1 0.37 19.3 1.5 0.70 18.6 2 1.32 17.0 2.5 2.52 14.1 3 4.89 9.2 3.5 8.99 4.1 4.0 8.59 1.0 5 7.85 6 7.35 8 6.20 10 5.15 15 3.45 20 2.20
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