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Operating characteristics of solid-state fermentation bioreactor with air pressure pulsation
1Institute of Biochemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China. jianliu03@mails.tsinghua.edu.cn
Prikladnaia Biokhimiia I Mikrobiologiia
|May 5, 2007
Summary
Solid state fermentation (SSF) bioreactors with air pressure pulsation improve heat dissipation and temperature control. This novel approach optimizes microbial growth conditions for enhanced enzyme production and cellulose utilization.
Area of Science:
- Biotechnology
- Biochemical Engineering
- Microbial Fermentation
Background:
- Solid state fermentation (SSF) is crucial for cellulase production and cellulose utilization.
- A major limitation of SSF is inadequate heat dissipation, hindering large-scale applications.
- High temperatures and gradients negatively impact microbial growth and enzyme yields.
Purpose of the Study:
- To develop and evaluate a novel SSF bioreactor utilizing air pressure pulsation.
- To investigate the cooling effects and temperature gradient mitigation capabilities of pressure pulsation.
- To optimize microbial cultivation conditions for enhanced enzyme production.
Main Methods:
- Development of a novel SSF bioreactor incorporating air pressure pulsation.
- Implementation of a measurement and control system based on the Virtual Instrument (VI) concept.
- Cultivation of Trichoderma koningii in a solid medium (wheat bran and corncob).
Main Results:
- Air pressure pulsation significantly enhances medium moisture evaporation, improving heat dissipation.
- Adjusting pressure pulsation directions effectively mitigates temperature gradients within the bioreactor.
- Optimized temperature and water content create a favorable microenvironment for microbial growth.
Conclusions:
- Air pressure pulsation is a viable strategy for overcoming heat dissipation challenges in SSF.
- The novel SSF bioreactor design promotes optimal conditions for microbial cultivation.
- This technology holds promise for scalable and efficient enzyme production and biomass utilization.
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