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High internal phase Pickering emulsions stabilized by dialdehyde amylopectin/chitosan complex nanoparticles
Bo Pang1, Huan Liu1, Florian Rehfeldt2
1Dept. Wood Technology and Wood-based Composites, Georg-August-University of Göttingen, Büsgenweg 4, Göttingen, D-37077, Germany.
Carbohydrate Polymers
|February 17, 2021
Summary
Researchers developed novel biobased nanoparticles from dialdehyde amylopectin/chitosan complex (DAPCNPs) to stabilize high internal phase Pickering emulsions (HIPPEs). These eco-friendly DAPCNPs offer enhanced stability for diverse applications, including food and biomedical fields.
Area of Science:
- Materials Science
- Colloid and Surface Chemistry
- Biotechnology
Background:
- High internal phase Pickering emulsions (HIPPEs) show promise in food, cosmetics, and biomedical fields.
- Limitations of current inorganic/synthetic emulsifiers include poor biodegradability and biocompatibility.
- Need for sustainable and biocompatible particulate emulsifiers is critical.
Purpose of the Study:
- To fabricate novel biobased nanoparticles for stabilizing HIPPEs.
- To evaluate the stabilizing efficiency and environmental stress resistance of these nanoparticles.
- To explore the fabrication of porous scaffolds using HIPPEs.
Main Methods:
- Synthesis of dialdehyde amylopectin/chitosan complex nanoparticles (DAPCNPs) via Schiff base reaction and ultrasonication.
- Stabilization of oil-in-water (O/W) HIPPEs using DAPCNPs with various oils (toluene, cyclohexane, styrene, rapeseed oil).
- Assessment of HIPPE stability under thermal and ionic stress; fabrication of porous scaffolds via freeze-drying.
Main Results:
- DAPCNPs successfully stabilized O/W HIPPEs with diverse oils.
- The DAPCNPs-stabilized HIPPEs exhibited excellent stability at 80 °C and in 20-100 mM NaCl solutions.
- Porous scaffolds were fabricated from DAPCNPs-stabilized HIPPEs incorporating polyvinyl alcohol (PVA).
Conclusions:
- DAPCNPs are effective biobased nanoparticles for stabilizing HIPPEs.
- These HIPPEs demonstrate robust stability, broadening their application potential.
- This work provides a foundation for developing polysaccharide-based nanoparticles for advanced emulsion applications.
