白芍提取物肠溶微囊的制备及体外释放度的研究
Journal of Jining Medical University(2013)
Abstract
目的:制备白芍提取物肠溶微囊并对其体外释放度进行考察。方法以相凝聚法制备微囊,建立高效液相色谱法测定微囊的载药量与包封率,并考查其体外释放度。结果所得微囊外观圆整,平均粒径为(460±120)μm范围内,载药量为92.3%,包封率为43.04%。所得微囊在模拟胃液中2h内释放量低于10%,在模拟肠液中45min释放量即超过70%。结论白芍提取物所制得的微囊肠溶效果理想。
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