Preparation, Statistical Optimization and Characterization of Propolis-Loaded Solid Lipid Nanoparticles Using...

Area of Science:

• Pharmaceutical Sciences
• Materials Science
• Biotechnology

Background:

• Propolis, a natural resin with diverse biological properties, holds therapeutic potential.
• Developing effective delivery systems is crucial for maximizing propolis's pharmacological benefits.
• Solid lipid nanoparticles (SLNs) offer a promising platform for encapsulating bioactive compounds.

Purpose of the Study:

• To formulate and characterize propolis-loaded solid lipid nanoparticles (SLNs).
• To optimize SLN formulations using Box-Behnken design for improved particle characteristics.
• To evaluate the in-vitro release profile of propolis from the developed nanoparticles.

Main Methods:

• SLNs were prepared using the solvent emulsification-evaporation technique.
• Formulation variables (GMS/Soy lecithin ratio, PEG 400/Tween 80 ratio, emulsification time) were optimized using Box-Behnken design.
• Particle size, polydispersity index (PDI), zeta potential, entrapment efficiency (EE), and loading efficiency (LE) were analyzed. Morphology was assessed using scanning electron microscopy (SEM).

Main Results:

• Optimized propolis-loaded SLNs exhibited a mean particle size of 122.6±22.36 nm, PDI of 0.28±0.06, and zeta potential of -26.18±3.3 mV.
• Entrapment efficiency (EE) was 73.57±0.86%, and loading efficiency (LE) was 3.29±0.27%.
• SEM confirmed spherical, non-aggregated nanoparticles, and in-vitro studies showed prolonged propolis release.

Conclusions:

• The solvent emulsification-evaporation method is suitable for producing propolis-loaded SLNs.
• The developed SLN system demonstrates potential for effective propolis delivery.
• Further research can explore the therapeutic applications of these optimized propolis-loaded SLNs.