Ethanolamine, serine and choline can be cleaved from glycerophospholipids by treatment with

TLS Online TPP Program

#Question id: 27175

#Section 5: Bioprocess Engineering and Process Biotechnology

A bacterial culture having a specific oxygen uptake rate of 5 mmol O2 (g- DCW)^-1h-1 is being grown aerobically in a fed-batch reactor. The maximum value of the volumetric oxygen transfer coefficient is 0.18 s for the stirred tank bioreactor and the critical dissolved oxygen concentration is 20% of the saturation concentration (8 mg L^-1). The maximum density to which the cells can be grown in the fed-batch process, without the growth being limited by oxygen transfer, is approximately

TLS Online TPP Program

#Question id: 27176

#Section 5: Bioprocess Engineering and Process Biotechnology

A strain of Azotobacter vinelandii is cultured in a 15-m³ stirred fermenter for alginate production. Under current operating conditions, ka is 0.17 s¹. The solubility of oxygen in the broth is approximately 8 × 10^-3 kg m ^-3.

(a) The specific rate of oxygen uptake is 12.5 mmol g^-1h^-1. What is the maximum cell concentration supported by oxygen transfer in the fermenter.............in g/l

TLS Online TPP Program

#Question id: 27177

#Section 5: Bioprocess Engineering and Process Biotechnology

A strain of Azotobacter vinelandii is cultured in a 15-m³ stirred fermenter for alginate produc- tion. Under current operating conditions, k_La is 0.17 s^-1. The solubility of oxygen in the broth is approximately 8 × 10^-3 kg m^-3.

(b) The bacteria suffer growth inhibition after copper sulphate is accidentally added to the fermentation broth just after the start of the culture. This causes a reduction in the oxygen uptake rate to 3 mmol g^-1 h^-1. What maximum cell concentration can now be supported by oxygen transfer in the fermenter?.....g/l

TLS Online TPP Program

#Question id: 27183

#Section 5: Bioprocess Engineering and Process Biotechnology

Calculate the overall order of a reaction which has rate expression:

Rate = k [A]^1/2 [B]^3/2

TLS Online TPP Program

#Question id: 27184

#Section 5: Bioprocess Engineering and Process Biotechnology

The rate constant of a reaction is k=3.28×10^-4 s^-1. Find the order of the reaction.