Hollow silica microspheres as robust immobilization carriers

Area of Science:

• Biotechnology
• Materials Science
• Biocatalysis

Background:

• Enzyme immobilization is crucial for developing efficient biocatalytic processes.
• Hollow silica microspheres offer promising support materials for enzyme immobilization.
• Novel carrier materials are needed to enhance enzyme stability and activity.

Purpose of the Study:

• To evaluate MATSPHERES®, a novel silica openwork material, as a support for covalent enzyme immobilization.
• To assess the effectiveness of immobilizing two model enzymes (ethylbenzene dehydrogenase and EL070 lipase) on MATSPHERES®.
• To characterize the immobilized enzymes and the microspheres' stability under various conditions.

Main Methods:

• Covalent immobilization of ethylbenzene dehydrogenase and EL070 lipase onto functionalized and non-functionalized MATSPHERES® using divinyl sulfone and glutaraldehyde.
• Morphological characterization of the microspheres.
• Assessment of mechanical stability under varying physical conditions (batch and flow).

Main Results:

• Successful covalent immobilization of both model enzymes onto MATSPHERES®.
• Demonstrated effectiveness of immobilization on both amine-grafted and non-functionalized spheres.
• MATSPHERES® exhibited relative stability under both batch and flow conditions.
• The openwork structure of MATSPHERES® proved advantageous for enzyme immobilization.

Conclusions:

• MATSPHERES® represent a competitive solid support for enzyme immobilization.
• The material is suitable for the synthesis of bioactive compounds using immobilized enzymes.
• The openwork silica microspheres offer a stable and effective platform for biocatalysis.