| 乙醇/硫酸铵双水相体系萃取甘草酸钾的研究 |
| |
| 引用本文： | 林金清,董军芳,李夏兰. 乙醇/硫酸铵双水相体系萃取甘草酸钾的研究[J]. 精细化工, 2004, 21(3): 165-167,173 |
| |
| 作者姓名： | 林金清 董军芳 李夏兰 |
| |
| 作者单位： | 华侨大学,化工系,福建,泉州,362011;华侨大学,化工系,福建,泉州,362011;华侨大学,化工系,福建,泉州,362011 |
| |
| 基金项目： | 福建省自然科学基金项目资助(E0210022,E0210019)，国务院侨办基金项目资助(01QZR04) |
| |
| 摘 要： | 实验考察了乙醇/硫酸铵双水相萃取甘草酸钾的可能性及其影响因素,结果表明,甘草酸钾在该体系的分配系数K和收率均随乙醇、硫酸铵质量分数的增加而增大,而随着pH的增加先增加后减小。且在w(乙醇)=35 1%,w(硫酸铵)=17 7%,pH=6 0左右时,分配系数K可达13 7,收率η可达96 3%。这将为甘草酸钾的提取分离提供一种新的可能。
|
| 关 键 词： | 双水相 萃取 甘草酸钾 |
| 文章编号： | 1003-5214(2004)03-0165-04 |
Extraction of Potassium Glycyrrhizanate by Aqueous Two-phase System of Ethanol-(NH4)2SO4-H2O |
| |
| LIN Jin-qing,DONG Jun-fang,LI Xia-lan. Extraction of Potassium Glycyrrhizanate by Aqueous Two-phase System of Ethanol-(NH4)2SO4-H2O[J]. Fine Chemicals, 2004, 21(3): 165-167,173 |
| |
| Authors: | LIN Jin-qing DONG Jun-fang LI Xia-lan |
| |
| Abstract: | Extraction of potassium glycyrrhizanate in aqueous two-phase system of ethanol-(NH_4)_2SO_4-H_2O was investigated.Experimental results indicate that the distribution coefficient K and the extraction ratio of potassium glycyrrhizanate increase with the mass fractions of (NH_4)_2SO_4 and ethanol,but they increase at first and then decrease when the pH value increases.The distribution coefficient K is up to 13.7 and the extraction ratio can be up to 96.3% under the conditions of w (C_2H_5OH)=35.1%, w 〔(NH_4)_2SO_4〕=17.7% and pH=6.0.Thus the aqueous two-phase system may provide a new technique for separation and purification of potassium glycyrrhizanate. |
| |
| Keywords: | aqueous two-phase system extraction potassium glycyrrhizanate |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
