Abstract:
Centella asiatica (Linn.) contains active compounds in the triterpenoid glycoside group, such as asiaticoside and madecassoside, which possess anti-inflammatory properties, stimulate collagen production, and promote wound healing. However, these compounds exhibit low stability in formulations. This study aimed to evaluate the efficiency of various solvents in extracting the active compounds and to investigate the effect of temperature on the stability of liposomes used for encapsulating Centella asiatica extracts. The results showed that 70% ethanol provided the highest extraction efficiency for asiaticoside and madecassoside, yielding 239.91 ± 21.38 and 102.92 ± 2.25 mg/L, respectively. The type of solvent used in liposome preparation significantly affected particle size, which decreased in the following order: isopropanol > ethanol > methanol, with particle sizes of 6,521.7 ± 389.1, 6,496.4 ± 445.2, and 5,618.0 ± 879.4 nm, respectively. In terms of stability, storage temperature had a considerable effect on the retention of active compounds. The highest retention of asiaticoside and madecassoside was observed at 4°C (47.23% and 43.99%, respectively), followed by 25°C (41.30% and 32.49%), and the lowest at 45°C (27.77% and 15.41%) after 21 days of storage. These findings indicate that liposomal encapsulation enhances the stability of active compounds and slows degradation under elevated temperatures. This technology shows promise for future applications in cosmeceutical products.