高效液相色谱法测定奥扎格雷钠脂质体的包封率

 目的 建立高效液相色谱法(high performance liquid chromatography,HPLC)测定奥扎格雷钠脂质体包封率的检测技术。方法 采用HPLC,以C₁₈色谱柱分离,以0.05 mol/L磷酸二氢钾溶液(pH=7.0)-甲醇-乙腈(80∶15∶5)为流动相,检测波长为274 nm测定。结果 奥扎格雷在10～100 μg/ml浓度范围内线性关系良好,r=0.9997。日内、日间RSD均小于0.5%,方法回收率为(100.2±0.42)%,样品的平均包封率为(94.89±0.44)%。结论 该测定方法简单,准确度高,灵敏度好,适合奥扎格雷钠脂质体的包封率测定。

Encapsulation efficiency of ozagrel hydroehloride liposome by HPLC

Objective To establish a high performance liquid chromatography (HPLC) method for the encapsulation efficiency of ozagrel hydrochloride liposome. Methods The HPLC was used for determination. A C18 column was used with the mobile phase of 0.05 mol/L potassium dihydrogen phosphate solution (pH=7.0) - acetonitrile - methanol (80∶15∶5) at the detection wavelength of 274 nm. Results The calibration curve was linear in the concentration range of 10-100 μg/ml, r=0.9997. The inter- and intra- day RSD was less than 0.5 %. The method recoveries were (100.2±0.42) %. The average entrapment efficiency of tartrate indoquinoline liposome was (94.89±0.44)%. Conclusions This method is simple,accurate and can be used to determine the encapsulation efficiency of ozagrel hydroehloride in ozagrel hydrochloride liposome.