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Difference between revisions of "Solid state fermentation"
Solid state fermentation (view source)
Revision as of 11:59, 17 January 2022
, 11:59, 17 January 2022→Process and technologies
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* Group 4: forced aeration, with continuous or intermittent mixing/agitation | * Group 4: forced aeration, with continuous or intermittent mixing/agitation | ||
==== Group 1: Tray | ==== Group 1: Tray bioreactors ==== | ||
"Tray bioreactors consist of a chamber containing individual trays that can be made of different materials, such as wood, bamboo, metal, and plastic. The trays typically have open tops and perforated bottoms, and are stacked one above another with a space in between to increase the availability of air. The trays are static beds that are mixed infrequently or not at all. Air is provided into the chamber and circulated around the trays with controlled humidity and temperature."<ref name=":2">{{Cite book|author=X. Ge, J. Vasco-Correa, Y. Li|year=2017|section_title=Solid-State Fermentation Bioreactors and Fundamentals|editor=Christian Larroche | "Tray bioreactors consist of a chamber containing individual trays that can be made of different materials, such as wood, bamboo, metal, and plastic. The trays typically have open tops and perforated bottoms, and are stacked one above another with a space in between to increase the availability of air. The trays are static beds that are mixed infrequently or not at all. Air is provided into the chamber and circulated around the trays with controlled humidity and temperature."<ref name=":2">{{Cite book|author=X. Ge, J. Vasco-Correa, Y. Li|year=2017|section_title=Solid-State Fermentation Bioreactors and Fundamentals|editor=Christian Larroche | ||
Maria Ángeles Sanromán | Maria Ángeles Sanromán | ||
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Ashok Pandey|book_title=Current Developments in Biotechnology and Bioengineering|publisher=Elsevier|ISBN=9780444636638}}</ref> | Ashok Pandey|book_title=Current Developments in Biotechnology and Bioengineering|publisher=Elsevier|ISBN=9780444636638}}</ref> | ||
==== Packed-Bed | ==== Group 2: Packed-Bed Bioreactors ==== | ||
"Packed-bed bioreactors are typically tubular containers that are packed with particles of substrates and microorganisms and have a perforated bottom to support the packing materials. In a packed-bed bioreactor, packing materials are generally not mixed and forced aeration is provided. The specific design of packed-bed bioreactors varies in the following aspects: | "Packed-bed bioreactors are typically tubular containers that are packed with particles of substrates and microorganisms and have a perforated bottom to support the packing materials. In a packed-bed bioreactor, packing materials are generally not mixed and forced aeration is provided. The specific design of packed-bed bioreactors varies in the following aspects: | ||
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3. Aeration may be provided from either the top or the bottom. Additional aeration can be supplied by inserting a perforated tube inside the bioreactor."<ref name=":2" /> | 3. Aeration may be provided from either the top or the bottom. Additional aeration can be supplied by inserting a perforated tube inside the bioreactor."<ref name=":2" /> | ||
==== Group 3: Rotating drum bioreactors ==== | |||
A rotating drum bioreactor is a horizontal cylinder. The drum is semi-filled with a bed of substrate. The fermented bed cannot be too high and this creates good oxygen and carbon dioxide transfer. Temperature control also depends on the mixing effect on the solid substrate. | |||
==== Group 4: Fluidized-bed bioreactors ==== | |||
Typically, fluidized-bed reactors are constructed from a verticalc chamber with a perforated base plate. Forced aeration is applied at the bottom chamber at sufficient speed to fluidize the solid substrate particles and cause mixing. Also, the bioreactor has an agitator, breaking up agglomerates that can form and settle to the bottom. The bed expands and so enough headspace is needed. The mixture of solid particles and gas will behave like a liquid. The fluidized-bed bioreactor provides a good mixing behavior of gas, solid and liquids. | |||
== Products == | == Products == | ||