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Related Experiment Video

Updated: Dec 30, 2025

Microfluidic On-chip Capture-cycloaddition Reaction to Reversibly Immobilize Small Molecules or Multi-component Structures for Biosensor Applications
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Enzyme Immobilization in Wall-Coated Flow Microreactors.

Donya Valikhani1, Juan M Bolivar1,2, Bernd Nidetzky3,4

  • 1Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, NAWI Graz, Graz, Austria.

Methods in Molecular Biology (Clifton, N.J.)
|January 16, 2020
PubMed
Summary
This summary is machine-generated.

This study presents a new method for immobilizing enzymes in microreactors using a silica-binding module. This enables efficient, continuous biocatalysis and enzyme reuse in microfluidic systems.

Keywords:
Flow biocatalysisImmobilizationMicroreactorSucrose phosphorylaseZbasic2

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Area of Science:

  • Biocatalysis and Enzyme Engineering
  • Microfluidics and Chemical Engineering

Background:

  • Continuous biocatalytic transformations using flow microreactors require efficient enzyme retention for multiple conversions.
  • Immobilizing enzymes on microchannel walls is a key strategy, but challenging within closed structures.

Purpose of the Study:

  • To develop a methodology for enzyme immobilization on the inner walls of glass microchannels for continuous biocatalysis.
  • To engineer enzymes for high-affinity, oriented attachment to microreactor surfaces.

Main Methods:

  • Enzyme engineering by fusing a silica-binding module (Zbasic2) to the target enzyme.
  • Utilizing plain glass microchannels for enzyme attachment.
  • Demonstration using sucrose phosphorylase for the synthesis of α-D-glucose 1-phosphate (αGlc 1-P).

Main Results:

  • Successful high-affinity, oriented immobilization of engineered enzymes onto glass microchannel walls.
  • Demonstrated continuous synthesis of αGlc 1-P using the immobilized enzyme microreactor.
  • Established procedures for enzyme immobilization, reactor characterization, and operation.

Conclusions:

  • The developed methodology enables robust enzyme immobilization in microfluidic reactors.
  • This approach is applicable to various enzymes fused with Zbasic2 and silica-based microreactors.
  • Facilitates efficient and reusable biocatalytic systems for continuous synthesis.