HPLC 法测定冰片-葛根素脂质体中葛根素的含量和包封率
CHINA PHARMACIST(2014)
Abstract
目的:建立冰片-葛根素脂质体中葛根素含量及包封率测定方法.方法:采用薄膜分散法制备冰片-葛根素脂质体,葡聚糖凝胶柱层析法分离脂质体和游离药物,采用高效液相色谱法测定脂质体中葛根素的含量和包封率.结果:葛根素在8~160 μg·ml-1范围内线性关系良好(r=0.999 8) ;柱层析法可有效分离药物,分离游离药物的柱回收率为99.32%(RSD=1.16%,n=9),加样回收率为98.56%(RSD=1.23%,n=9).3批样品的平均包封率为62.35%,65.41%,63.18%(n=3).结论:该方法准确、灵敏,可用于冰片-葛根素脂质体中葛根素含量及包封率的测定.
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