期刊
FOOD CHEMISTRY
卷 141, 期 4, 页码 3578-3585出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2013.06.040
关键词
Molecularly imprinted polymers; Specific ionic liquid; Separation; Synephrine; Aurantii Fructus Immaturus
资金
- National Natural Science Foundation of China [20806037, 20876131]
- Jiangxi Province Young Scientists (Jinggang Star) Cultivation Plan [20112BCB23002]
- Natural Science Foundation of Jiangxi, China [2007GQH1752]
- Natural Science Foundation of Jiangxi Province Department of Education [GJJ09420]
- Open Foundation of Key Laboratory of Poyang Lake Ecology, Bio-Resource Utilization of Ministry of Education [Z04998]
- Special Funds for Graduate Student Innovation in Jiangxi Province [YC2011-S005, YC2012-S017]
A novel molecularly imprinted polymer (MIP) using the specific ionic liquid (i.e. 1-vinyl-3-carboxymethylimidazolium bromide, 1-vinyl-3-carboxyethylimidazolium bromide, 1-viny-3-carboxybutylimidazolium bromide, or 1-vinyl-3-carboxypentylimidazolium bromide) as functional monomer was prepared via precipitation polymerization, which can be used to selectively separate synephrine (SYN) from methanol-water media. Ionic liquids are facile to be designed with varying the cation or anion, which enables the specific ionic liquid to be effectively designed to be a functional monomer for the preparation of MIP. The MIP showed a good selectivity and high adsorption capacity for SYN in methanol-water media. The adsorption process could be described by the pseudo-first-order model, which meant that the adsorption kinetics described a diffusion-controlled process. The equilibrium data fitted well to the Freundlich model, indicating multilayer adsorption. Finally, the MIP were successfully applied as sorbent to selectively enrich and separate SYN from the extracts of Aurantii Fructus Immaturus with a relatively high recovery (80-90%). (c) 2013 Elsevier Ltd. All rights reserved.
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