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Starch-based Janus particle: Fabrication, characterization and interfacial properties in stabilizing Pickering
Haifeng Tong1, Juan Wang1, Liang Qi2
1Carbohydrate Laboratory, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, PR China ; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, PR China.
Carbohydrate Polymers
|May 14, 2023
Summary
Researchers developed novel Janus particles (J-OSPs) from chitosan nanoparticles and starch for enhanced Pickering emulsion stabilization. These plant-derived Janus particles offer superior performance in storage and delivery applications.
Area of Science:
- Materials Science
- Colloid and Surface Chemistry
- Nanotechnology
Background:
- Janus particles offer unique interfacial properties due to their asymmetric structure.
- Stabilizing Pickering emulsions is crucial for various applications, including storage and delivery systems.
- Developing sustainable and plant-derived materials is an ongoing research focus.
Purpose of the Study:
- To synthesize and characterize novel Janus particles (J-OSPs) using chitosan nanoparticles (CSNPs) and octadecenyl succinic anhydride starch (OSPs).
- To investigate the interfacial characteristics and self-assembly behavior of J-OSPs.
- To evaluate the performance of J-OSPs as stabilizers for Pickering emulsions.
Main Methods:
- Janus particles (J-OSPs) were fabricated using the Pickering emulsion method and electrostatic interaction.
- Scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM) were employed to verify particle structure.
- Interfacial characteristics, including hydrophobicity and surface charge, were analyzed.
Main Results:
- J-OSPs exhibited diverse asymmetric structures, confirmed by microscopy.
- Directional distribution of CSNPs enhanced J-OSP hydrophobicity and altered surface charge with pH.
- J-OSPs demonstrated superior Pickering emulsion stabilization, indicated by higher emulsion index and viscosity, due to self-assembly.
Conclusions:
- This study presents a novel method for constructing plant-derived Janus particles.
- The self-assembly property of J-OSPs significantly improves Pickering emulsion stability.
- These findings open new avenues for utilizing Janus particles in active substance storage and delivery.