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A lipase/poly (ionic liquid)-styrene microspheres/PVA composite hydrogel for esterification application.

Zhengqiang Qin1, Nuan Feng1, Yuan Ma2

  • 1Instrumental Analysis Center, Dalian Polytechnic University, Dalian 116034, China; School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China.

Enzyme and Microbial Technology
|November 8, 2021
PubMed
Summary

This study presents a novel method for one-step enzyme purification and immobilization using poly (ionic liquid)-styrene microspheres. This efficient biocatalyst system enhances lipase activity and reusability for green chemical synthesis.

Keywords:
Enzyme purificationLipase fermentation brothPVA-hydrogelPoly (ionic liquid)

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Area of Science:

  • Biocatalysis
  • Green Chemistry
  • Materials Science

Background:

  • Enzymes are valuable biocatalysts for sustainable chemical synthesis.
  • Traditional enzyme purification is inefficient, hindering widespread enzyme catalysis.
  • Developing efficient enzyme purification and immobilization strategies is crucial.

Purpose of the Study:

  • To develop a novel, efficient one-step strategy for enzyme purification and immobilization.
  • To create a stable and reusable enzyme catalytic system for green synthesis.
  • To enhance lipase activity and tolerance in harsh environments.

Main Methods:

  • Synthesized novel poly (ionic liquid)-styrene microspheres for direct lipase adsorption and purification.
  • Optimized microsphere surface morphology and charge to improve enzyme loading.
  • Immobilized the enzyme-loaded microspheres within a physical crosslinking hydrogel.

Main Results:

  • Achieved efficient one-step purification and immobilization of high-activity lipase.
  • The resulting complex catalytic system demonstrated significantly enhanced catalytic activity (6314.69 U mg⁻¹) compared to raw fermentation broth (1672.87 U mg⁻¹).
  • The system exhibited excellent reusability over 8 cycles and good tolerance to harsh conditions.

Conclusions:

  • The developed poly (ionic liquid)-styrene microsphere-hydrogel system offers an efficient approach for enzyme purification and immobilization.
  • This strategy enhances enzyme stability, activity, and reusability, promoting green synthesis applications.
  • The system's versatility allows for shaping according to specific catalytic needs.