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Published on: February 19, 2016
Natural shellac nanoparticles embedded porous chitosan microgel as a stability-enhanced Pickering interfacial
Tangyu Yang1, Haiwei Jia2, Yuting Song2
1School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, 381 Wushan Road, Tianhe District, Guangzhou 510640, China; Nano-BioTechnology Laboratory, Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium.
Researchers developed a sustainable biocatalytic system using chitosan microgels and natural shellac nanoparticles for Pickering interfacial biocatalysis (PIB). This novel approach enhances enzyme stability and catalytic efficiency for green industrial applications.
Area of Science:
- Biocatalysis
- Green Chemistry
- Materials Science
Background:
- Enzyme-driven processes are crucial for sustainable green industries.
- Pickering interfacial biocatalysis (PIB) offers high catalytic efficiency but faces challenges with hydrophobic regulation and stability.
- Existing methods often use unstable or harmful hydrophobic agents.
Purpose of the Study:
- To develop a novel, stable, and sustainable biomaterial-based particle system for Pickering interfacial biocatalysis (PIB).
- To immobilize lipases within chitosan microgels coated with natural shellac nanoparticles (SNPs).
- To evaluate the system's performance in hexyl hexanoate synthesis and assess its stability and reusability.
Main Methods:
- Synthesis of lipase-loaded chitosan microgels enveloped by natural shellac nanoparticles (SNPs).
- Formation of Pickering emulsions for enzyme immobilization and reaction.
- Characterization of catalytic performance, stability (thermal/pH), and reusability.
- Evaluation of hexyl hexanoate synthesis as a model reaction.
Main Results:
- The developed PIB system demonstrated an 11-fold activity enhancement compared to free lipase.
- Achieved robust thermal and pH stability, with high reusability (95.10% residual activity after 8 cycles).
- The system exhibited enhanced Pickering emulsion stability and mitigated droplet coalescence due to SNPs.
Conclusions:
- The novel biomaterial-based PIB system offers a stable and sustainable alternative for enzyme immobilization.
- The combination of chitosan microgels and SNPs provides effective hydrophobic regulation and anti-coalescence properties.
- This biocompatible system shows significant promise for applications in food-grade processing, cosmetics, and drug delivery.
