15 Questions
What is a characteristic of tray bioreactors used at commercial scale?
They may be perforated or non-perforated, and come in various sizes
What is a challenge associated with the use of tray bioreactors in industry?
They require intensive labor and large areas
What is an alternative method mentioned for maintaining sterility in tray bioreactors?
Use of sterilizable and microporous bags
What is an example of a solid state fermentation (SSF) bioreactor without forced aeration?
Trays
What is a characteristic of horizontal drum bioreactors with forced aeration?
Agitation may occur continuously or intermittently
What is a common challenge associated with the use of tray bioreactors in industry?
Difficulty in maintaining sterility
What is an example of a solid medium used in tray bioreactors?
Wood
What is the purpose of agitation in a horizontal drum bioreactor with forced aeration?
To remove heat accumulation in the substrate bed
According to Durand (2003), what was the largest reactor cited in the literature for kinetic studies of Rhizopus?
200 L stainless steel rotating drum
What is an alternative to maintain sterility in tray bioreactors?
Use of sterilizable and microporous bags
What is the most significant problem in scale-up of solid state fermentation (SSF) bioreactors?
Intense heat generation and system heterogeneity
What is a major challenge associated with microbial growth under aerobic conditions in SSF bioreactors?
Considerable production of heat
Why are commercial designs of bioreactors absent in some bioprocesses involving solid state fermentation?
Lack of standardized processes and limited reproducibility
What is the primary factor that makes it difficult to remove the heat produced during microbial growth in SSF bioreactors?
Absence of a free aqueous phase for heat removal
Which parameter poses a challenge in controlling the environment within solid state fermentation (SSF) bioreactors?
Moisture level
Test your knowledge on bioreactor configurations, instrumentation, and control devices used at pilot and industrial scales. Learn about the elements and features of SSF bioreactors, including trays without forced aeration, controlled environments, ejectors, air filters, humidifiers, heaters, and air recirculation.
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