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Highly Concentrated Emulsions Containing High Loads of Pterostilbene
Wael Kaade1, Sara Rubio1, Achille Bogas-Droy1
1Centre de Recherche Paul Pascal, Université Bordeaux 1, CNRS, Avenue du Dr Albert Schweitzer, 33600 Pessac, France.
ACS Omega
|July 31, 2023
Summary
Encapsulating pterostilbene in oil-in-water emulsions improves its availability. Pterostilbene at the oil/water interface impacts emulsion stability, droplet size, and light sensitivity, influenced by oil type and storage temperature.
Area of Science:
- Food Science
- Materials Science
- Chemical Engineering
Background:
- Pterostilbene exhibits significant bioactivity but suffers from poor water solubility, limiting its practical applications.
- Encapsulation in oil-in-water emulsions is a strategy to enhance pterostilbene bioavailability.
- Limited research exists on pterostilbene's behavior and impact at the oil/water interface within emulsions.
Purpose of the Study:
- To investigate the effects of pterostilbene concentration on oil-in-water emulsion stability.
- To analyze how oil type and storage temperature influence the encapsulation efficiency and stability of pterostilbene.
- To understand the interaction of pterostilbene with oil and water phases at the interface.
Main Methods:
- Formulation of oil-in-water emulsions with varying pterostilbene concentrations.
- Analysis of emulsion stability under different storage temperatures and with different oil types.
- Measurement of interfacial tension and droplet size.
- Assessment of encapsulation efficiency and pterostilbene's light stability.
Main Results:
- Pterostilbene accumulates at the oil/water interface, reducing interfacial tension and influencing droplet size.
- Emulsion encapsulation efficiency is significantly affected by storage temperature and the choice of oil.
- The stability of encapsulated pterostilbene to light is dependent on both oil type and storage conditions.
Conclusions:
- Pterostilbene's interfacial activity is a key factor in emulsion characteristics and stability.
- Optimizing oil type and storage temperature is crucial for effective pterostilbene encapsulation and stability.
- Understanding these interactions is vital for developing stable pterostilbene delivery systems.
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