The mean diameter of liposome and liposomal gel was 280 nm and 332.8 nm respectively. The appearance of liposomal gel was characterized by freeze-etching technique. The EE of five batches of liposomes was 94.2%, 97.5%, 93.4%, 95.3% and 95.7% respectively.

• 激光散射法测定脂质体及脂质体凝胶的平均粒径分别为280nm、332nm；葡聚糖凝胶柱法测定5批供试样品包封率分别为94.；2%25、97