title: Ionic liquid-based ultrasonic/microwave-assisted extraction combined with UPLC-MS-MS for the determination of tannins in Galla chinensis.
abstract: Ionic liquid was used as extraction solvents and applied to the extraction of tannins from Galla chinensis in the simultaneous ultrasonic- and microwave-assisted extraction (UMAE) technique. Several parameters of UMAE were optimised, and the results were compared with of the conventional extraction techniques. Under optimal conditions, the content of tannins was 630.2 ± 12.1 mg g⁻¹. Compared with the conventional heat-reflux extraction, maceration extraction, regular ultrasound- and microwave-assisted extraction, the proposed approach exhibited higher efficiency (11.7-22.0% enhanced) and shorter extraction time (from 6 h to 1 min). The tannins were then identified by ultraperformance liquid chromatography tandem mass spectrometry. This study suggests that ionic liquid-based UMAE is an efficient, rapid, simple and green sample preparation technique.
authors: State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, People's Republic of China.
authors: Chunxia
authors: C
authors: Lu
authors: Hongxin
authors: H
authors: Wang
authors: Wenping
authors: W
authors: Lv
authors: Chaoyang
authors: C
authors: Ma
authors: Zaixiang
authors: Z
authors: Lou
authors: Jun
authors: J
authors: Xie
authors: Bo
authors: B
authors: Liu
mesh_terms: D027926:Anacardiaceae / Q000737:chemistry; D005591:Chemical Fractionation / Q000379:methods*; D002853:Chromatography, Liquid / Q000379:methods; D052578:Ionic Liquids / Q000737:chemistry; D008872:Microwaves; D010936:Plant Extracts / Q000737:chemistry; D053719:Tandem Mass Spectrometry / Q000379:methods*; D013634:Tannins / Q000032:analysis* / Q000302:isolation & purification*; D014465:Ultrasonics
chemical_list: D052578:Ionic Liquids; D010936:Plant Extracts; D013634:Tannins