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One-Step Encapsulation of Capsaicin into Chitosan-Oleic Acid Complex Particles: Evaluation of Encapsulation Ability
Takashi Kuroiwa1,2, Yoshiki Higuchi1
1Department of Applied Chemistry, Faculty of Science and Engineering, Tokyo City University, Tokyo 158-8557, Japan.
Polymers
|June 10, 2022
Summary
Researchers developed a novel method to encapsulate capsaicin (CAP) using chitosan and oleic acid particles. This technique improves CAP
Area of Science:
- Biomaterials Science
- Food Science
- Pharmaceutical Technology
Background:
- Capsaicin (CAP) possesses significant health benefits, including anti-cancer, anti-inflammatory, and antioxidant properties.
- Current applications of CAP are hindered by poor water solubility, low bioavailability, and intense pungency.
Purpose of the Study:
- To develop a simple, one-step method for stable encapsulation and aqueous dispersion of capsaicin.
- To create polyelectrolyte complex particles for enhanced capsaicin delivery.
Main Methods:
- Utilized a polyelectrolyte complexation between chitosan (CHI) and oleic acid (OA) to form particles.
- Incorporated capsaicin (CAP) into the hydrophobic domains of CHI-OA complex particles via hydrophobic interactions.
- Investigated factors influencing CAP encapsulation efficiency.
Main Results:
- Successfully prepared homogeneous CHI-OA-CAP complex particles with mean diameters below 1 μm.
- Achieved a maximum capsaicin encapsulation yield of approximately 100%.
- Demonstrated stability of the complex particles for over 3 months at room temperature without phase separation or CAP degradation.
Conclusions:
- The developed one-step method offers a stable and effective encapsulation technique for capsaicin.
- This approach has the potential to overcome current limitations and expand the practical applications of capsaicin in food and pharmaceuticals.
