C. roseus cells immobilized in Ca-alginate beads of diameter 0.5 mm are used for production of indole alkaloids (IA) in a fluidized-bed bioreactor. The rate limiting nutrient is glucose and no intraparticle diffusion limitations exist. Use the following data: Flow rate of the feed: Q = 1 l/h, Glucose in the feed: So = 30 g/l, Plant Cell Concentration: X = 6 g/l reac. The rate constant for IA formation: k = 5 d-1 (g/l)-1 Ks = 0.4 g/l, Column diameter: Do = 0.15 m. Growth is negligible and Monod kinetics is valid. For 95% glucose conversion determine required hydraulic residence time.

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#Question id: 20417

#Section 5: Bioprocess Engineering and Process Biotechnology

Pseudomonas aeruginosa has a maximum specific growth rate of 0.8 h-1 in a medium with glucose as a growth limiting substrate. To prevent wash out, the dilution rate must be set to

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#Question id: 20418

#Section 5: Bioprocess Engineering and Process Biotechnology

Continuous culture has an advantage over to a batch cultures as

TLS Online TPP Program

#Question id: 20543

#Section 4: Fundamentals of Biological Engineering

Which of the following is an example of non reducing sugar?

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#Question id: 20544

#Section 4: Fundamentals of Biological Engineering

Match the group 1 with appropriate description of group 2.

Group 1                                                  group 2

(P) Carbon source                                       (1) Ammonium salts 

(Q) Nitrogen sources                                  (2)molasses, starch or corn syrup

(R) Phosphorus source                               (3) MgSO4

(S) Magnesium source                                (4)KH2PO4

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#Question id: 20545

#Section 4: Fundamentals of Biological Engineering

Which of the following phases comes under growth pattern in batch culture

TLS Online TPP Program

#Question id: 20546

#Section 4: Fundamentals of Biological Engineering

Secondary metabolites are produced in which of the following stages?