期刊
JOURNAL OF CHEMICAL THERMODYNAMICS
卷 47, 期 -, 页码 372-375出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2011.11.017
关键词
Oleanolic acid; Ursolic acid; Solubility; Solvents; Correlation
资金
- National Natural Science Foundation of China [20806037, 20876131]
- Natural Science Foundation of Jiangxi, China [2007GQH1752]
- Natural Science Foundation of Jiangxi Province Department of Education [GJJ09420]
- Jiangxi Province Young Scientists (Jinggang Star) Cultivation Plan [20112BCB23002]
- Special Funds for Graduate Student Innovation in Jiangxi Province [YC09B012]
- Key Laboratory of Poyang Lake Ecology and Bio-Resource Utilization of Ministry of Education [Z04998]
The solubility of oleanolic acid and of ursolic acid in (ethanol + water) mixed solvents was measured over the temperature range of (292.2 to 328.2) K. The solubility of oleanolic acid and of ursolic acid in the (ethanol + water) mixed solvent systems increase with increasing the mole fraction of ethanol in mixed solvents. The experimental solubility data are correlated by a simplified thermodynamic equation and the modified Apelblat equation. (C) 2011 Elsevier Ltd. All rights reserved.
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