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Agitated Drum Reactors Quiz

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Questions and Answers

What is the main purpose of rotating drum bioreactors (RDB) mentioned in the text?

To ensure mixing of solid medium without forced aeration and agitation (correct)
To study the production of aroma compounds in a 3kg drum bioreactor
To create shear and damage the structure of the mycelium
To regulate the temperature of the room where they are incubated

What distinguishes agitated drum reactors from static drum reactors based on the text?

Agitated drum reactors use continuous agitation, while static drum reactors use sporadic agitation
Agitated drum reactors are used for biofuels production, while static drum reactors are used for aroma compounds production
Agitated drum reactors are built in drum-shaped, while static drum reactors use a horizontal cylindrical vessel with a worm inside
Agitated drum reactors do not contain baffles inside, while static drum reactors contain baffles (correct)

What is the advantage of laboratory-scale bioreactors mentioned in the text?

They are based on manual monitoring of important process variables (correct)
They are relatively gentle and provide uniform mixing by improving baffle design
They offer forced aeration and agitation for better mixing
They are used for the production of aroma compounds in a 3kg drum bioreactor

What type of equipment is preferred for Solid State Fermentation (SSF) based on the text?

Erlenmeyer flasks and small perforated trays (D) Signup and view all the answers

What is the potential problem associated with the agitation in static drum reactors?

It may lead to problems of shear and damage to the structure of the mycelium (C) Signup and view all the answers

What is a disadvantage of using Erlenmeyer flasks in laboratory scale reactors?

Inability to control parameters (D) Signup and view all the answers

What is the purpose of connecting the column-type bioreactors to air bubblers?

To adjust the desired amount of air flow (C) Signup and view all the answers

Why are Erlenmeyer flasks closed using cotton plugs?

To allow passive aeration (D) Signup and view all the answers

What is the significance of measuring respirometry in column-type bioreactors?

To understand the metabolism of microorganisms (A) Signup and view all the answers

What distinguishes column-type bioreactors from Erlenmeyer flasks in terms of aeration?

Column-type bioreactors have forced aeration, while Erlenmeyer flasks have passive aeration (C) Signup and view all the answers

What is the primary disadvantage of column-type bioreactors mentioned in the text?

Impossibility of withdrawing samples (A) Signup and view all the answers

Why are column-type bioreactors connected to air bubblers?

To adjust the amount of air flow for aeration (D) Signup and view all the answers

What is the significance of aeration adjustment in column-type bioreactors?

Influence on the metabolism of microorganisms (C) Signup and view all the answers

What is the key advantage of the bed temperature fermentation in column-type bioreactors?

Efficient heat removal by the column wall (B) Signup and view all the answers

What prevents the withdrawal of samples from column-type bioreactors?

The need for over cultivation before sampling (C) Signup and view all the answers

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