摘要
利用脂质体与生物膜结构的相似性,将脂质体加入毛细管电泳缓冲溶液中作为假固定相,在数分钟内测定了阿魏酸的脂水分配系数Klw,建立了脂质体电动色谱评价阿魏酸与生物膜相互作用的方法。研究了脂质体中胆固醇的含量、缓冲溶液pH值和缓冲体系对Klw的影响。结果表明,在实验条件范围内(胆固醇含量0~30%,pH值4.0~12.0),胆固醇含量升高,缓冲溶液pH值增大,Klw降低;在不同的缓冲体系中,离子强度越大,Klw越大。脂水分配系数的变化反映了阿魏酸与生物膜相互作用。
A facile method for electrokinetic chromatography ( evaluating acidic drug-biomembrane interaction was established by liposome LEKC ). LEKC is a capillary electrophoresis technique where liposome is some and biomembrane. Liposome water partition coefficient ( Klw ) of ferulic acid was determined in several minutes. The effect of cholesterol content, buffer pH and buffer composition on Klw was investigated. An increase in cholesterol content (0- 30% )and pH values (4.0 -12.0) resulted in a lower Klw. In different buffer systems, the greater ionic strength was, the larger KlwWaS. The difference of Klw revealed ferulic acid-biomembrane interaction.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2007年第10期1521-1524,共4页
Chinese Journal of Analytical Chemistry
基金
教育部科技创新工程重大项目培育基金资助项目(No.704036)
关键词
脂质体电动色谱
阿魏酸
生物膜
脂水分配系数
Liposome electrokinetic chromatography, ferulic acid, biomembrane, liposome water partitioncoefficients