High-Pressure Microfluidic Homogenization Improves the Stability and Antioxidant Properties of Coenzyme Q10 Nanoliposomes

Coenzyme Q10 is a natural antioxidant with anti-tumor and mitochondrial protective effects. However, its unstable physicochemical properties and large molecular weight result in low bioavailability. This study aimed to develop an effective technique for constructing nanoliposomes to improve the physicochemical properties of CoQ10 by using high-pressure microfluidic homogenization. Liposomes were prepared using the ethanol injection method and homogenized by high-pressure microfluidics to optimize their physicochemical properties. Liposome morphology and microstructure were observed via transmission electron microscopy (TEM). The particle size distribution, polydispersity index (PDI), and encapsulation efficiency were assessed, while effects on cell viability and antioxidant properties were investigated in HepG2 cells. The results indicate that the prepared liposomes exhibit favorable characteristics, including high encapsulation efficiency (>96%) and low PDI (<0.3), indicating uniform particle size distribution and good stability. The storage stability of liposomes at room temperature was significantly enhanced compared to liposomes not subjected to high pressure homogenization. In vitro cell experiments confirmed the liposomes' non-cytotoxicity and substantial antioxidant activity, ensuring their safety for biomedical applications. This study introduced a liposome preparation method combining ethanol injection and high-pressure microfluidic homogenization, offering a novel approach for liposome modification with potential for development and application in innovative drug delivery systems and antioxidant therapy.