期刊
SEPARATION SCIENCE AND TECHNOLOGY
卷 47, 期 12, 页码 1740-1747出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2012.659787
关键词
aqueous two-phase systems; extraction; ionic liquids; puerarin
资金
- National Natural Science Foundation of China [20806037, 20876131, 20976166]
- 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]
- Open Foundation of Key Laboratory of Poyang Lake Ecology and Bio-Resource Utilization of Ministry of Education [Z04998]
- Special Funds for Graduate Student Innovation in Jiangxi Province [YC09B012]
Various ionic liquid-based aqueous two-phase systems (IL-ATPS) were evaluated to extract puerarin. The results indicated that the nature of ILs, the salting-out ability of salt, and the acidity and basicity of the salt-rich solution had important influence on the extraction efficiency. Various factors were optimized systematically, that is, the amount of IL, salt, puerarin, and short-chain alcohol. Under the optimal experimental conditions (the amount of K2HPO4 0.30-0.42 g/mL, [Bmim]Br 0.30-0.36 g/mL and 1.0 mL puerarin stock solution), the extraction efficiency of puerarin was over 99% by a single-step extraction, which indicated that the evaluated IL-ATPS was a prospective extraction medium. Finally, the IL-ATPS was successfully used to extract puerarin from Radix Puerariae Lobatae extracts.
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