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Int. J. Mol. Sci. 2012, 13(7), 8775-8788; doi:10.3390/ijms13078775

Microwave-Assisted Method for Simultaneous Extraction and Hydrolysis for Determination of Flavonol Glycosides in Ginkgo Foliage Using Brönsted Acidic Ionic-Liquid [HO3S(CH2)4mim]HSO4 Aqueous Solutions

State Engineering Laboratory for Bio-Resource Eco-Utilization, Northeast Forestry University, Harbin 150040, China
These authors contributed equally to this work.
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Received: 23 April 2012 / Revised: 5 July 2012 / Accepted: 6 July 2012 / Published: 16 July 2012
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Abstract

The Brönsted acidic ionic-liquid [HO3S(CH2)4mim] HSO4, a novel dual catalyst–solvent, has been successfully applied in simultaneous microwave-assisted extraction and hydrolysis for the determination of flavonol glycosides in Ginkgo foliage. The parameters, namely the [HO3S(CH2)4mim]HSO4 concentration, microwave-irradiation power, microwave-irradiation time, and solid–liquid ratio, were optimized. The optimum conditions were: an amount of 1.5 M [HO3S(CH2)4mim]HSO4, a microwave-irradiation power of 120 W, an irradiation time of 15 min, and a solid–liquid ratio of 1:30 g/mL. Compared with traditional methods the proposed approach demonstrates higher efficiency in a shorter operating time, and is an efficient, rapid, and simple sample preparation method. View Full-Text
Keywords: Ginkgo biloba; ionic liquid; [HO3S(CH2)4mim]HSO4; microwave-assisted extraction; hydrolysis; flavonol glycoside Ginkgo biloba; ionic liquid; [HO3S(CH2)4mim]HSO4; microwave-assisted extraction; hydrolysis; flavonol glycoside
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Yao, H.; Du, X.; Yang, L.; Wang, W.; Yang, F.; Zhao, C.; Meng, X.; Zhang, L.; Zu, Y. Microwave-Assisted Method for Simultaneous Extraction and Hydrolysis for Determination of Flavonol Glycosides in Ginkgo Foliage Using Brönsted Acidic Ionic-Liquid [HO3S(CH2)4mim]HSO4 Aqueous Solutions. Int. J. Mol. Sci. 2012, 13, 8775-8788.

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