Solubility of saturated fatty acids in water at elevated temperatures

被引：101

作者：

Khuwijitjaru, P ^{[1
]}

Adachi, S ^{[1
]}

Matsuno, R ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Agr, Div Food Sci & Biotechnol, Sakyo Ku, Kyoto 6068502, Japan

来源：

BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY | 2002年 / 66卷 / 08期

关键词：

subcritical water; fatty acid; solubility; high temperature;

D O I：

10.1271/bbb.66.1723

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：

The solubility in water of saturated fatty acids with even carbon numbers from 8 to 18 was measured in the temperature range of 60 to 230degreesC and at a pressure of 5 or 15 MPa. The pressure had no significant effect on the solubility. The solubility of the fatty acids increased with increasing temperature. At temperatures higher than about 160degreesC, the logarithm of the solubility in mole fraction was linearly related to the reciprocal of the absolute temperature for each fatty acid, indicating that the water containing solubilized fatty acid molecules formed a regular solution at the higher temperatures. The enthalpy of a solution of the fatty acids in water, which was evaluated from the linear relationship at the given temperatures, increased linearly with the carbon number of the fatty acid.

引用

页码：1723 / 1726

页数：4

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