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Researchers developed a simple method to create small, uniform chitosan microspheres using microfluidics. These microspheres show promise for controlled drug release and enzyme immobilization, demonstrating varied release profiles and good stability.

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Area of Science:

  • Biomaterials Science
  • Chemical Engineering
  • Drug Delivery Systems

Background:

  • Chitosan microspheres are valuable for drug delivery and biocatalysis.
  • Controlling microsphere size and structure is crucial for optimizing performance.
  • Existing methods for microsphere fabrication can be complex or lack precise control.

Purpose of the Study:

  • To develop a novel, simple, and controllable method for preparing monodispersed chitosan microspheres.
  • To investigate the application of these microspheres in protein drug controlled release.
  • To evaluate the efficacy of the microspheres for immobilizing lipases.

Main Methods:

  • Utilized a capillary-embedded microfluidic device for microsphere fabrication.
  • Combined solvent extraction and chemical crosslinking solidification techniques.
  • Characterized microsphere size, structure, and properties.

Main Results:

  • Successfully prepared monodispersed chitosan microspheres with controlled sizes and structures.
  • Demonstrated distinct release profiles for protein drugs encapsulated within the microspheres.
  • Achieved good stability when microspheres were used for lipase immobilization.

Conclusions:

  • The developed microfluidic approach offers a simple and effective way to produce tailored chitosan microspheres.
  • These microspheres exhibit significant potential for advanced applications in controlled drug delivery and biocatalysis.
  • The structural control achieved is key to modulating release kinetics and enzyme stability.