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Hydrophobic Salt-modified Nafion for Enzyme Immobilization and Stabilization
Published on: July 11, 2012
Invertase immobilized on macroporous polystyrene: properties and kinetic characterization
1Department of Biochemistry, Martin-Luther University Halle, 4020 Halle, Domplatz 1, GDR.
Biotechnology and Bioengineering
|January 1, 1987
Summary
Immobilized invertase enzyme from baker's yeast shows high activity and stability on a polystyrene matrix, making it suitable for industrial glucose-fructose mixture production. This enzyme immobilization enhances efficiency in bioreactor applications.
Area of Science:
- Biocatalysis and Enzyme Engineering
- Chemical Engineering
- Biotechnology
Background:
- Enzyme immobilization is crucial for industrial biocatalysis, improving enzyme stability and reusability.
- Baker's yeast invertase (Saccharomyces cerevisiae) is a key enzyme for sucrose hydrolysis.
- Developing efficient immobilization methods is essential for cost-effective enzyme applications.
Purpose of the Study:
- To covalently immobilize invertase from baker's yeast onto a macroporous polystyrene anion exchanger.
- To kinetically characterize the immobilized invertase in batch and packed-bed reactors.
- To evaluate the suitability of the immobilized enzyme for industrial glucose-fructose mixture production.
Main Methods:
- Covalent binding of invertase using benzoquinone and glutaraldehyde crosslinkers.
- Immobilization onto a macroporous polystyrene anion exchanger support.
- Kinetic studies of sucrose hydrolysis in batch and packed-bed reactor configurations.
- Determination of conversion degree dependence on flow rate at high substrate concentrations.
Main Results:
- Successfully created stable invertase-polystyrene complexes with high specific and relative activities.
- Demonstrated effective kinetic behavior in both batch and packed-bed reactors.
- Characterized enzyme performance under industrially relevant high substrate concentrations and flow rates.
- Polystyrene matrix provided good hydrodynamical and mechanical properties.
Conclusions:
- The developed invertase-polystyrene complexes exhibit excellent properties for industrial applications.
- Enzyme immobilization on polystyrene enhances invertase stability and performance in bioreactors.
- These biocatalysts are suitable for efficient and large-scale production of glucose-fructose mixtures.
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