Pengaruh Durasi Sonikasi Terhadap Efisiensi Enkapsulasi dan Karakteristik Liposom Berisi Propolis Non-Wax yang Dibuat Melalui Metode Hidrofilik-Sonikasi = Effect of Sonication Duration Variation on Encapsulation Efficiency and Characteristics of Liposomes Containing NonWax Propolis Formed Through Hydrophilic-Sonication Method