期刊
MOLECULES
卷 17, 期 12, 页码 14323-14335出版社
MDPI
DOI: 10.3390/molecules171214323
关键词
ionic liquid; Bauhinia championii (Benth.) Benth.; flavonoids; LC-MS
资金
- National Natural Science Foundation of China [81001624]
- key project of Fujian Province Science-Technology Department [2009YZ0001-1-1]
- Fujian Province Science-Technology plan projects [2010Y2004]
An ionic liquids (IL)-based microwave-assisted approach for extraction and determination of flavonoids from Bauhinia championii (Benth.) Benth. was proposed for the first time. Several ILs with different cations and anions and the microwave-assisted extraction (MAE) conditions, including sample particle size, extraction time and liquid-solid ratio, were investigated. Two M 1-butyl-3-methylimidazolium bromide ([bmim] Br) solution with 0.80 M HCl was selected as the optimal solvent. Meanwhile the optimized conditions a ratio of liquid to material of 30: 1, and the extraction for 10 min at 70 degrees C. Compared with conventional heat-reflux extraction (CHRE) and the regular MAE, IL-MAE exhibited a higher extraction yield and shorter extraction time (from 1.5 h to 10 min). The optimized extraction samples were analysed by LC-MS/MS. IL extracts of Bauhinia championii (Benth.) Benth consisted mainly of flavonoids, among which myricetin, quercetin and kaempferol, beta-sitosterol, triacontane and hexacontane were identified. The study indicated that IL-MAE was an efficient and rapid method with simple sample preparation. LC-MS/MS was also used to determine the chemical composition of the ethyl acetate/MAE extract of Bauhinia championii (Benth.) Benth, and it maybe become a rapid method to determine the composition of new plant extracts.
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