期刊
FOOD CHEMISTRY
卷 135, 期 4, 页码 2299-2306出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2012.07.038
关键词
Ionic liquid; Ultrasonic assisted extraction; Puerarin; Radix Puerariae Lobatae; Optimization; Response surface methodology
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 and Bio-Resource Utilization of Ministry of Education [Z04998]
- Special Funds for Graduate Student Innovation in Jiangxi Province [YC09B012]
Ionic liquid (IL) based ultrasonic assisted extraction (ILUAE) was developed for the effective extraction of puerarin from Radix Puerariae Lobatae (RPL). The ILUAE parameters including the type of ILs, IL concentration, RPL amount, ultrasonic power and time were optimized by single-factor experiment and response surface methodology. Under the optimized experimental conditions, the best results were obtained using RPL amount 0.43 g in 10 mL 1.06 mol L-1 1-butyl-3-methylimidazolium bromide aqueous solution, ultrasonic time 27.43 min and ultrasonic power 480 W. Scanning electron microscope images of RPL samples were obtained to provide visual evidence of the sonication effect. Compared with the conventional ultrasonic assisted extraction and refluent extraction, the proposed ILUAE offered shorter extraction time and remarkable higher efficiencies due to the higher penetration ability and solubility of IL and the cavitation phenomenon produced in the solvent by the passage of an ultrasonic wave, which further supported the suitability of the proposed approach. (C) 2012 Elsevier Ltd. All rights reserved.
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