Interactions between cholesterol and triacylglycerols in carbon tetrachloride: Calorimetric and spectroscopic studies

被引：11
|
作者：
Goralski, P
机构：
[1] Department of Physical Chemistry, Univ. of Łódź, 91-416 Łódź
来源：
THERMOCHIMICA ACTA | 1996年 / 274卷
关键词：
cholesterol; triacylglycerols; hydrogen bond complexes; calorimetry;
D O I：
10.1016/0040-6031(95)02677-0
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The equilibrium constant (K-f) and enthalpy (Delta(f)H) of hydrogen bond complex formation (1 : 1) between cholesterol and triacylglycerols have been determined by means of spectroscopic (IR) and calorimetric methods. The triacylglycerols used (triacetin, tributyrin, trilaurin, tripalmitin and triolein) form weak hydrogen bonds with cholesterol which are shown by the low values of K-f (from 2.4 to 3.3 M(-1)) and Delta(f)H (from -9.6 to -11.8 kJ mol(-1)). The basicity of triacylglycerols expressed by pK(HB) has a predominant effect on the enthalpy of complex formation with cholesterol.
引用
收藏
页码：45 / 52
页数：8
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