Ionic liquid-based ultrasonic/microwave-assisted extraction combined with UPLC for the determination of anthraquinones in rhubarb
文献类型： 外文期刊
作者： Lu, Chunxia 1 ; Wang, Hongxin 1 ; Lv, Wenping 1 ; Ma, Chaoyang 1 ; Xu, Pao 2 ; Zhu, Jian 2 ; Xie, Jun 2 ; Liu, Bo 2 ; Zhou, 1 ;
作者机构： 1.Jiangnan Univ, Sch Food Sci & Technol, State Key Lab Food Sci & Technol, Wuxi 214122, Peoples R China
2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Open Lab Genet Breeding Aquat Anim & Aquacult, Minist Agr, Wuxi 214081, Peoples R China
3.Chinese Acad Fis
关键词： Anthraquinones;Ionic liquid;Rhubarb;Ultra performance liquid chromatography;Ultrasonic/microwave-assisted extraction
期刊名称：CHROMATOGRAPHIA （ 影响因子：2.044； 五年影响因子：1.725 ）
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收录情况： SCI
摘要： Ionic liquid-based ultrasonic/microwave-assisted extraction (IL-UMAE) of five anthraquinones (physcion, chrysophanol, emodin, rhein, and aloe-emodin) from rhubarb was first studied. Several parameters of UMAE were optimized, and the results were compared with of the heat-reflux extraction (HRE), ultrasound, and microwave-assisted extraction (MAE and UAE). The optimal UMAE conditions were as follows: the solvent was 2.0 mol L~(-1) 1-butyl-3- methylimidazolium bromide [bmim]Br solution, the ration of solid/liquid (g mL~(-1)) was 1:15, time was 2 min, and microwave power was 500 W. Under these UMAE conditions, total content of five anthraquinones was 28.00 mg g ~(-1). Compared with the conventional HRE, regular MAE and UAE techniques, the proposed approach exhibited higher efficiency (18.90-24.40% enhanced) and shorter extraction time (from 6 h to 2 min). The anthraquinones were then determined by ultra performance liquid chromatography (UPLC). Based on optimized conditions, contents of physcion, chrysophanol, emodin, rhein and aloe-emodin in rhubarb collected from different cultivated areas were 0.68-2.99, 5.03-15.40, 0.48-4.34, 0.025-3.93 and 0.26-2.56 mg g~(-1), respectively. This study suggests that IL-UMAE was an efficient, rapid, simple and green preparation technique.
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