Interfacial tension of phosphatidylcholine-cholesterol system in monolayers at the air/water interface

被引：28
|
作者：
Brzozowska, I
Figaszewski, ZA
机构：
[1] Univ Warsaw, Fac Chem, Lab Interfacial Electrochem, PL-02093 Warsaw, Poland
[2] Univ Bialystok, Inst Chem, PL-15443 Bialystok, Poland
来源：
BIOPHYSICAL CHEMISTRY | 2002年 / 95卷 / 02期
关键词：
egg lecithin; cholesterol; interfacial tension; monolayer; equilibrium;
D O I：
10.1016/S0301-4622(02)00029-7
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Interfacial tension of an egg lecithin-cholesterol system was measured across the whole concentration range. Surface pressure-area isotherm measurements were carried out in a Langmuir trough at the air/water interface at room temperature (22 degreesC). The interfacial tension of the air/water interface was divided into contributions of components. The interfacial tension of a 1:1 complex between phosphatidylcholine and cholesterol was calculated. Its value equals 18 mN/m. The difference between the stability constant of 1:1 complex in the bilayer and the monolayer at the air/water interface is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：173 / 179
页数：7
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