Stabilizing D-amino acid oxidase for industrial use
Author Information
Author(s): Dib Iskandar, Nidetzky Bernd
Primary Institution: Graz University of Technology
Hypothesis
The study investigates the stabilizing effects of immobilization on D-amino acid oxidase from Trigonopsis variabilis under various conditions.
Conclusion
Covalent attachment of D-amino acid oxidase on a porous carrier significantly stabilizes the enzyme against high temperatures and gas-liquid interface inactivation.
Supporting Evidence
- Covalent attachment improved the enzyme's stability at high temperatures.
- The immobilized enzyme could be reused in multiple cycles of substrate conversion.
- Non-covalent attachment did not significantly enhance stability compared to the free enzyme.
Takeaway
The researchers found that attaching an enzyme to a solid support helps it work better and last longer, especially in hot conditions.
Methodology
The enzyme was immobilized using two methods: multi-point covalent binding to epoxy-activated Sepabeads and non-covalent oriented immobilization to Strep-Tactin coated particles.
Limitations
The study does not address the optimization of the immobilization process or the potential for further improvements in enzyme stability.
Digital Object Identifier (DOI)
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