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A simple method for bakers' yeast cell disruption using a three-phase fluidized bed equipped with an agitator
Tawatchai Charinpanitkul1, Apinan Soottitantawat, Wiwut Tanthapanichakoon
1Department of Chemical Engineering, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand. ctawat@chula.ac.th
Bioresource Technology
|June 13, 2008
Summary
A novel fluidized bed reactor achieved 90% yeast cell disruption using a turbine agitator. Adding glass beads and increasing agitation speed enhanced disruption, while higher liquid flow rates reduced it.
Area of Science:
- Biotechnology
- Biochemical Engineering
- Cell Disruption Technologies
Background:
- Efficient disruption of Saccharomyces cerevisiae (baker's yeast) is crucial for extracting intracellular components.
- Traditional methods can be energy-intensive or inefficient.
- A simple, effective cell disruption device is needed for biotechnological applications.
Purpose of the Study:
- To evaluate a three-phase fluidized bed with a turbine agitator for disrupting baker's yeast cells.
- To investigate the effects of operational parameters on yeast cell disruption efficiency.
- To optimize the process for maximum cell lysis and protein release.
Main Methods:
- Utilized a three-phase fluidized bed reactor with a turbine agitator for yeast cell disruption.
- Assessed disruption degree by counting broken cells, measuring crude soluble proteins, and microscopic observation.
- Varied agitation speed, presence/size of glass beads, and liquid flow rate.
Main Results:
- Achieved up to 90% yeast cell disruption.
- Increased agitation speed and the presence of 1000 micrometer glass beads significantly enhanced disruption.
- Higher liquid flow rates decreased disruption efficiency due to reduced contact time.
Conclusions:
- The fluidized bed reactor is a simple and effective device for high-efficiency yeast cell disruption.
- Optimizing agitation speed and using appropriate glass beads maximizes cell lysis.
- Process parameters like liquid flow rate must be carefully controlled for optimal results.
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