Research on Preparation Technology and Performance of Phillyrin Self-Microemulsion

Area of Science:

• Pharmacology and Pharmaceutical Sciences
• Materials Science
• Drug Delivery Systems

Background:

• Phillyrin exhibits beneficial effects including lipid reduction, anti-inflammation, and blood pressure lowering.
• Poor water solubility limits phillyrin's oral bioavailability.
• Novel drug delivery systems are needed to improve phillyrin's therapeutic efficacy.

Purpose of the Study:

• To develop and characterize a self-microemulsion formulation of phillyrin.
• To optimize the self-microemulsion preparation process for improved drug delivery.
• To evaluate the potential of self-microemulsion to enhance phillyrin's solubility and bioavailability.

Main Methods:

• Ingredient selection based on solubility tests and ternary phase diagrams.
• Optimization of self-microemulsion formula using response surface methodology.
• Characterization of microemulsion properties including particle size, PDI, encapsulation efficiency, stability, and in vitro dissolution.

Main Results:

• Optimized self-microemulsion achieved an average particle size of 42.37 nm, PDI of 0.244, and encapsulation efficiency of 69.51%.
• The self-microemulsion formulation demonstrated improved in vitro dissolution compared to pure phillyrin.
• Characterization confirmed the apparent properties, stability, and drug content of the prepared microemulsion.

Conclusions:

• Phillyrin self-microemulsion effectively enhances the solubility and in vitro dissolution of phillyrin.
• This formulation presents a promising strategy to improve the oral utilization and bioavailability of phillyrin.
• Self-microemulsion technology offers a viable alternative for overcoming the limitations of oral phillyrin administration.