Acta Neuropharmacologica ›› 2016, Vol. 6 ›› Issue (6): 23-30.DOI: 10.3969/j.issn.2095-1396.2016.06. 002

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Research Progress on Encapsulation Efficiency of Liposomes

ZHAO Kai-yan, ZHANG Dan-shen   

  1. Hebei University of Science and Technology, Shijiazhuang, 050018, China
  • Online:2016-12-26 Published:2017-01-03
  • Contact: 张丹参,女,博士生导师,研究方向:神经药理学,E-mail:zhangds2011@126.com
  • About author:赵凯燕,女,硕士研究生;研究方向:神经药理学;E-mail:18132015769@163.com
  • Supported by:

    国家自然科学基金项目(No. 81274005) ,河北省自然科学基金项目(No. H2016208058),河北省教育厅科学技术研究重点项目(ZD 2016009)

Abstract: Liposomes are vesicles composed of phospholipid bilayers surrounding an aqueous compartment. It is possible to encapsulate not only hydrophilic drugs in the inner aqueous compartment, but also lipophilic compounds in the lipidic double layer. Lipidic double layer is ideal for drug delivery to the human body, due to the similarity with natural cells. Its application is important to the diagnosis and treatment of nervous system diseases,malignant tumors, hereditary diseases and so on. When designing and developing a liposome formulation, it is important to control the encapsulation efficiency. High drug encapsulation is a very important characteristic. Furthermore, evaluation of EE is a regulatory requirement. Herein, our aim is to review the relevant papers in the literature on method for determination of entrapment efficiency and discuss the effect of the lipid membrane composition, phospholipid chain length, charge, and different liposome preparation methods on the encapsulation efficiency.

Key words: liposomes, entrapment efficiency, column switching chromatography system, supercritical CO2 technology