Unroasted Green Coffee Extract-Loaded Solid Lipid Nanoparticles for Enhancing Intestinal Permeation

Area of Science:

• Pharmaceutical Sciences
• Nanotechnology
• Natural Products Chemistry

Background:

• Green coffee bean extract (GCBE) offers health benefits but suffers from low bioavailability.
• Low bioavailability limits the therapeutic potential and application of GCBE.
• Enhancing GCBE absorption is crucial for its effective utilization.

Purpose of the Study:

• To develop and optimize Green Coffee Bean Extract-loaded Solid Lipid Nanoparticles (GCBE-SLNs).
• To improve the intestinal absorption and bioavailability of GCBE.
• To evaluate the potential of nanoencapsulated GCBE for enhanced chlorogenic acid delivery.

Main Methods:

• GCBE-loaded SLNs were prepared using high shear homogenization.
• Formulation parameters (lipid, surfactant, co-surfactant concentrations) were optimized using Box-Behnken design.
• Physicochemical properties (particle size, PDI, ζ-potential, entrapment efficiency, drug release) were analyzed.
• An ex vivo everted sac model was used to assess intestinal permeation.

Main Results:

• Optimized GCBE-SLNs exhibited a particle size of 235.7 nm, PDI of 0.417, and ζ-potential of -15 mV.
• High entrapment efficiency (58.3%) and cumulative drug release (75.75%) were achieved.
• Nanoencapsulation significantly improved the intestinal permeation of GCBE in the ex vivo model.

Conclusions:

• The developed GCBE-SLNs successfully enhanced the bioavailability of GCBE.
• Solid lipid nanoparticles offer a promising strategy for improving the oral delivery of natural compounds.
• This approach holds potential for boosting the intestinal absorption of chlorogenic acid from GCBE.