NEARCRITICAL FLUIDS AS SOLVENTS FOR BETA-CAROTENE

被引：26

作者：

JAY, AJ

STEYTLER, DC

机构：

[1] AFRO Institute of Food Research, Norwich Laboratory, Norwich Research Park, Colney, Norwich

来源：

JOURNAL OF SUPERCRITICAL FLUIDS | 1992年 / 5卷 / 04期

关键词：

BETA-CAROTENE; SUPERCRITICAL FLUIDS; LIQUEFIED GASES; SOLVENTS; SOLUBILITY; SOLVATOCHROMISM;

D O I：

10.1016/0896-8446(92)90019-G

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：

A number of nearcritical fluids are compared with organic liquids as extraction solvents, by studying the solubility of beta-carotene using a high-pressure optical cell. N2O and Xe are better solvents than CO2, while in nearcritical hydrocarbons, solubilities approach those in organic solvents. Liquid SO2 appears to be an exceptionally good solvent, but there is evidence of chemical reaction with beta-carotene. The solubility and UV-visible solvatochromic shift of the solute are used to discuss solvation in terms of solvent molecular dipole and polarizability, and also whether the solvatochromic shift can be used as a guide to determine the solubility of beta-carotene in nearcritical fluids.

引用

页码：274 / 282

页数：9

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