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Pickering Emulsions Based in Inorganic Solid Particles: From Product Development to Food Applications
Andreia Ribeiro1,2,3,4, José Carlos B Lopes1,2, Madalena M Dias1,2
1Laboratory of Separation and Reaction Engineering-Laboratory of Catalysis and Materials (LSRE-LCM), Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
Molecules (Basel, Switzerland)
|March 29, 2023
Summary
Pickering emulsions (PEs) offer stable, functional products using safe inorganic particles instead of conventional emulsifiers. This review highlights hydroxyapatite (HAp) for PEs, focusing on food applications and scalable production.
Area of Science:
- Materials Science
- Colloid and Surface Chemistry
- Food Science
Background:
- Pickering emulsions (PEs) are gaining traction due to their superior physical stability and potential as carriers for active compounds.
- They offer a sustainable alternative to traditional emulsifier-based systems, aligning with green chemistry principles.
- Safe inorganic solid particles are explored as effective emulsion stabilizers.
Purpose of the Study:
- To review the application of safe inorganic particles in stabilizing Pickering emulsions.
- To discuss the stabilization mechanisms at oil-water interfaces, with a focus on hydroxyapatite (HAp).
- To present production technologies and explore the feasibility of scaling up PEs for industrial use, particularly in the food sector.
Main Methods:
- Literature review focusing on Pickering emulsion stabilization mechanisms.
- Analysis of hydroxyapatite (HAp) as a Pickering stabilizer.
- Examination of various production technologies for PEs.
- Assessment of industrial scale-up potential and food industry applications.
Main Results:
- Inorganic solid particles, particularly hydroxyapatite (HAp), demonstrate effective stabilization of Pickering emulsions.
- Various production technologies for PEs are identified, with an emphasis on scalable laboratory-scale methods.
- PEs offer synergistic effects and enhanced functionality for active compound delivery.
Conclusions:
- Pickering emulsions stabilized by safe inorganic particles, like HAp, present a promising avenue for developing stable and functional products.
- The review provides insights into formulation, production, and properties of food-grade PEs, emphasizing scalability and sustainability.
- PEs hold significant potential for innovation within the food industry.
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