摘要
目的:制备盐酸小檗碱脂质体,并测定其包封率和脂质体各成分含量。方法:采用硫酸铵梯度法制备盐酸小檗碱脂质体,以超速离心法、微柱法、超滤法对盐酸小檗碱脂质体包封率的测定方法进行研究,以HPLC-ELSD测定脂质体各成分含量。结果:超速离心法能将未包封药物与脂质体很好地分离,最佳超速离心条件:离心速度为60 000 r·min-1,离心时间为1h,离心温度为10℃,脂质浓度为6 mg·ml-1。结论:包封率测定方法具有简单、快速分离等优点。HPLC-ELSD能够同时测定脂质体各成分含量。
Objective:To prepare bererine hydrochloride ( BER) liposomes and establish an effective method for the determination of content and entrapment efficiency. Methods:BER liposomes were prepared by ammonium sulfate gradient method. The encapsula-tion efficiency of BER liposomes was respectively determined by supercentrifugation method, microcolumn gel method and ultrafiltration method, and the content of every component in BER liposomes was detected by HPLC-ELSD. Results:The results showed that super-centrifugation method could precisely separate the free drug from the liposomes. The optimum parameters of supercentrifugation method were the centrifugal speed of 60 000 r·min-1 , the centrifugal time of 1 h, the centrifugal temperature of 10℃ and the lipid concentra-tion of 6 mg·ml-1 . Conclusion:The method is simple and sensitive with good separation efficiency. HPLC-ELSD can be used to de-termine the content of every component in BER liposomes.
出处
《中国药师》
CAS
2014年第4期601-605,共5页
China Pharmacist