Phase equilibrium for capsaicin plus water plus ethanol plus supercritical carbon dioxide

被引：31

作者：

Duarte, CMM ^{[1
]}

Crew, M ^{[1
]}

Casimiro, T ^{[1
]}

Aguiar-Ricardo, A ^{[1
]}

da Ponte, MN ^{[1
]}

机构：

[1] Univ Nova Lisboa, Fac Ciencias & Tecnol, Ctr Quim Fina & Biotecnol, Dept Quim, P-2829516 Lisbon, Portugal

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 2002年 / 22卷 / 02期

关键词：

capsaicin; alkaloids; hydroalcoholic mixtures; vapor-liquid equilibrium; supercritical fluid extraction;

D O I：

10.1016/S0896-8446(01)00114-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The possibility of extracting capsaicin with supercritical carbon dioxide from a hydroalcholic mixture containing the alkaloid was investigated. High-pressure phase equilibrium on the quaternary system CO2 + ethanol + water + capsaicin was measured in order to obtain the separation factor of the natural product from hydro-alcoholic model mixtures. Experiments on phase equilibrium behavior were performed at several pressures (12, 15 and 18 MPa) and temperatures of 40 and 50 degreesC. The separation factors for three mixtures of different composition - 0.40 water + 0.60 ethanol mass fraction and 0.9 water + 0.10 ethanol mass fraction, containing 0.02% of capsaicin and 0.40 water mass fraction containing 0.04% of capsaicin-are compared. The effect of the water content in the selectivity of the extraction process is discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：87 / 92

页数：6