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

共 12 条

[1]

BRUNNER G, 1998, P 5 M SUP FLUIDS MAT, V2, P413

[2] Correlation of vapor-liquid equilibrium for carbon dioxide plus ethanol plus water at temperatures from 35 to 70°C [J].

Duarte, C ;

Aguiar-Ricardo, A ;

Ribeiro, N ;

Casimiro, T ;

Da Ponte, MN .

SEPARATION SCIENCE AND TECHNOLOGY, 2000, 35 (14) :2187-2201

[3]

DUARTE CMM, 1999, P 6 M SUP FLUIDS CHE, P59

[4]

DUARTE CMM, 2000, P 7 M SUP FLUIDS PAR, V2, P681

[5]

Gigliotti Davidson, 1999, COMMUNICATION

[6] High pressure phase equilibria for poly(ethylene glycol)s + CO2:: experimental results and modelling [J].

Gourgouillon, D ;

da Ponte, MN .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (23) :5369-5375

[7]

MAJEED M, 1997, CAPSAICIN ANTIARTHRI

[8]

Mukhopadhyay M., 2000, NATURAL EXTRACTS USI

[9]

Nguyen U, 1998, P 5 M SUP FLUIDS MAT, P523

[10] PHASE-EQUILIBRIA OF CO2 PLUS DL-ALPHA-TOCOPHEROL AT TEMPERATURES FROM 292-K TO 333-K AND PRESSURES UP TO 26-MPA [J].

PEREIRA, PJ ;

GONCALVES, M ;

COTO, B ;

DEAZEVEDO, EG ;

DAPONTE, MN .

FLUID PHASE EQUILIBRIA, 1993, 91 (01) :133-143

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