Solubility of the natural antioxidant gallic acid in supercritical CO2+ethanol as a cosolvent

被引：51

作者：

Chafer, Amparo ^{[1
]}

Fornari, Tiziana

Stateva, Roumiana P.

Berna, Angel

Garcia-Reverter, Jose

机构：

[1] Univ Valencia, Dept Ingn Quim, Burjassot 46100, Spain

[2] Univ Autonoma Madrid, Area Tecnol Alimentos, Madrid, Spain

[3] Bulgarian Acad Sci, Inst Chem Engn, Sofia 1113, Bulgaria

[4] Agrofood Technol Inst, Paterna 46890, Spain

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2007年 / 52卷 / 01期

关键词：

D O I：

10.1021/je060273v

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Solubility data of solid 3,4,5-trihydroxybenzoic acid (gallic acid) in supercritical CO2 + ethanol as a cosolvent are reported in this work. Measurements were carried out in the temperature range (313.15 to 333.15) K, pressures ranging from (10 to 40) MPa, and different ethanol modifier content ranging from (0.7 to 6) %. The experimental data were correlated using the Soave-Redlich-Kwong equation of state and the group contribution associating equation of state. The thermodynamic modeling analysis includes also the solubility representation of an important class of natural antioxidants (e.g., gallic acid esters) in supercritical CO2.

引用

页码：116 / 121

页数：6

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