Continuous Flow Reactors from Microfluidic Compartmentalization of Enzymes within Inorganic Microparticles

Area of Science:

• Biotechnology
• Materials Science
• Chemical Engineering

Background:

• Cellular compartmentalization and selective transport are crucial for biochemical reactions.
• Enzyme immobilization on surfaces offers control but can reduce efficacy and stability.
• Existing methods face challenges with enzyme degradation and limited reusability.

Purpose of the Study:

• To develop a novel method for creating enzyme-containing microparticles with enhanced stability and controlled functionality.
• To protect encapsulated enzymes from degradation while allowing selective substrate and product diffusion.
• To demonstrate the application of these microparticles in molecular sensing, specifically glucose detection.

Main Methods:

• Utilizing droplet microfluidics to generate microparticles.
• Forming an inorganic silica shell around encapsulated enzymes, creating a semipermeable barrier.
• Encapsulating two distinct enzymes for a controlled reaction cascade for glucose detection.

Main Results:

• The silica shell effectively protected enzymes from proteinase degradation.
• Enzymes retained functionality over multiple reaction cycles.
• Microparticles demonstrated selective diffusion of substrates and products.
• Successful application in a glucose detection assay via a two-enzyme cascade.

Conclusions:

• The developed microparticles offer a robust, accessible, and modular system for housing active enzymes.
• This approach enhances enzyme stability and controlled functionality for various applications.
• The technology holds promise for advanced molecular sensing and novel diagnostic platforms.