Abstract:
Liposomes are extensively used as encapsulating and carriers for active compounds. Because liposomes contain components that are compatible with the body. It is non-toxic and biodegradable as well as improving the stability of the substances. The method of preparing liposomes for containment is one factor to consider as it affects the dispersion and particle size, as well as the release rate and stability of the liposomes. In this study, preparation, and characterization of liposome for arbutin encapsulation using high-pressure homogenizer, because arbutin is a low stability substance, encapsulation in the form of liposome particles is likely to enhance the stability of arbutin. High-pressure homogenizer is efficient multipurpose tools that can rapidly produce a large volume of liposomes in a continuous and reproducible manner led to further reduction in vesicle diameter and uniform vesicles. The objectives of this research were to study factors such as the ratio between phospholipid cholesterol and arbutin, the release rate of arbutin and the stability of liposomes. Including the conditions of the high-pressure homogenizer, such as the pressure and number of cycles required to prepare the liposomes for arbutin encapsulation. Preparation of liposome for arbutin encapsulation using high-pressure homogenizer resulted in a small unilamellar vesicles. The particle size was significantly reduced with increasing pressure and the number of cycles of the high-pressure homogenizer with an average size between 150 and 200 nm. Lipid concentration was increased, the entrapment efficiency was increased with the highest average efficiency of 74.29% In addition, encapsulation of the active substance in form of liposome particles and addition of cholesterol can help to control the release rate of the active substance as well as improve its stability with liposome particles. Therefore, the conditions of the high-pressure homogenizer and the optimal ratio of phospholipids to cholesterol in the preparation of liposomes for arbutin encapsulation are 3 cycles of pressure 1000 bar at a lipid concentration of 2% (w/w), phospholipid to cholesterol ratio of 10:2 (w/w) and a storage temperature condition of 4 degrees Celsius.