Next Article in Journal
Previous Article in Journal
Int. J. Mol. Sci. 2012, 13(4), 5163-5178; doi:10.3390/ijms13045163
Article

Application of Ionic Liquids in the Microwave-Assisted Extraction of Proanthocyanidins from Larix gmelini Bark

†,,* ,
,
,
,
 and *
Received: 5 March 2012; in revised form: 23 March 2012 / Accepted: 20 April 2012 / Published: 24 April 2012
(This article belongs to the Section Green Chemistry)
View Full-Text   |   Download PDF [673 KB, uploaded 19 June 2014]   |   Browse Figures
Abstract: Ionic liquid based, microwave-assisted extraction (ILMAE) was successfully applied to the extraction of proanthocyanidins from Larix gmelini bark. In this work, in order to evaluate the performance of ionic liquids in the microwave-assisted extraction process, a series of 1-alkyl-3-methylimidazolium ionic liquids with different cations and anions were evaluated for extraction yield, and 1-butyl-3-methylimidazolium bromide was selected as the optimal solvent. In addition, the ILMAE procedure for the proanthocyanidins was optimized and compared with other conventional extraction techniques. Under the optimized conditions, satisfactory extraction yield of the proanthocyanidins was obtained. Relative to other methods, the proposed approach provided higher extraction yield and lower energy consumption. The Larix gmelini bark samples before and after extraction were analyzed by Thermal gravimetric analysis, Fourier-transform infrared spectroscopy and characterized by scanning electron microscopy. The results showed that the ILMAE method is a simple and efficient technique for sample preparation.
Keywords: ionic liquid; microwave-assisted extraction; proanthocyanidins; Larix gmelini bark ionic liquid; microwave-assisted extraction; proanthocyanidins; Larix gmelini bark
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Yang, L.; Sun, X.; Yang, F.; Zhao, C.; Zhang, L.; Zu, Y. Application of Ionic Liquids in the Microwave-Assisted Extraction of Proanthocyanidins from Larix gmelini Bark. Int. J. Mol. Sci. 2012, 13, 5163-5178.

AMA Style

Yang L, Sun X, Yang F, Zhao C, Zhang L, Zu Y. Application of Ionic Liquids in the Microwave-Assisted Extraction of Proanthocyanidins from Larix gmelini Bark. International Journal of Molecular Sciences. 2012; 13(4):5163-5178.

Chicago/Turabian Style

Yang, Lei; Sun, Xiaowei; Yang, Fengjian; Zhao, Chunjian; Zhang, Lin; Zu, Yuangang. 2012. "Application of Ionic Liquids in the Microwave-Assisted Extraction of Proanthocyanidins from Larix gmelini Bark." Int. J. Mol. Sci. 13, no. 4: 5163-5178.



Int. J. Mol. Sci. EISSN 1422-0067 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert