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[Kinetics model of spherical immobilized cellulase]
Jian-Qin Zhou1, Shi-Gong Chen, Zhong-Kui Zhu
1School of Pharmacy, Soochow University, Suzhou 215007, China.
Sheng Wu Gong Cheng Xue Bao = Chinese Journal of Biotechnology
|November 16, 2005
Summary
This study models immobilized cellulase performance, revealing competitive product inhibition increases substrate concentration and effectiveness factors. Diffusion and carrier size also significantly impact enzyme efficiency.
Area of Science:
- Biochemical Engineering
- Enzyme Kinetics
- Biocatalysis
Context:
- Immobilized enzymes are crucial for industrial biocatalysis.
- Cellulase performance is often limited by diffusion and product inhibition.
- Accurate kinetic modeling is needed to optimize enzyme reactors.
Purpose:
- To develop a comprehensive kinetics model for immobilized cellulase.
- To investigate the influence of competitive product inhibition, diffusion, substrate concentration, and carrier size on enzyme performance.
- To calculate effectiveness factors under various conditions.
Summary:
- A Michaelis-Menten kinetics model incorporating competitive product inhibition was developed.
- The model predicts substrate and product distribution within carriers, considering diffusional limitations.
- Increased substrate concentration and diffusion enhance effectiveness factors, while larger carrier size reduces them.
Impact:
- Provides a predictive tool for optimizing immobilized cellulase reactors.
- Offers insights into factors affecting enzyme efficiency in industrial applications.
- Contributes to the design of more effective biocatalytic processes.