Int. J. Mol. Sci. 2012, 13(6), 7607-7616; doi:10.3390/ijms13067607
Communication

Ultrasound-Assisted Extraction of Syringin from the Bark of Ilex rotunda Thumb Using Response Surface Methodology

Received: 28 April 2012; in revised form: 12 May 2012 / Accepted: 15 May 2012 / Published: 20 June 2012
(This article belongs to the Section Bioactives and Nutraceuticals)
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.
Abstract: In this work, a rapid extraction method based on ultrasound-assisted extraction (UAE) of syringin from the bark of Ilex rotunda Thumb using response surface methodology (RSM) is described. The syringin was analyzed and quantified by high performance liquid chromatography coupled with UV detection (HPLC-UV). The extraction solvent, extraction temperature and extraction time, the three main factors for UAE, were optimized with Box-Behnken design (BBD) to obtain the highest extraction efficiency. The optimal conditions were the use of a sonication frequency of 40 kHz, 65% methanol as the solvent, an extraction time of 30 min and an extraction temperature of 40 °C. Using these optimal conditions, the experimental values agreed closely with the predicted values. The analysis of variance (ANOVA) indicated a high goodness of model fit and the success of the RSM method for optimizing syringin extraction from the bark of I. rotunda.
Keywords: ultrasound-assisted extraction; syringin; Ilex rotunda; response surface methodology; Box-Behnken design
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MDPI and ACS Style

Zhao, L.-C.; He, Y.; Deng, X.; Xia, X.-H.; Liang, J.; Yang, G.-L.; Li, W.; Wang, H. Ultrasound-Assisted Extraction of Syringin from the Bark of Ilex rotunda Thumb Using Response Surface Methodology. Int. J. Mol. Sci. 2012, 13, 7607-7616.

AMA Style

Zhao L-C, He Y, Deng X, Xia X-H, Liang J, Yang G-L, Li W, Wang H. Ultrasound-Assisted Extraction of Syringin from the Bark of Ilex rotunda Thumb Using Response Surface Methodology. International Journal of Molecular Sciences. 2012; 13(6):7607-7616.

Chicago/Turabian Style

Zhao, Li-Chun; He, Ying; Deng, Xin; Xia, Xiang-Hua; Liang, Jian; Yang, Geng-Liang; Li, Wei; Wang, Hui. 2012. "Ultrasound-Assisted Extraction of Syringin from the Bark of Ilex rotunda Thumb Using Response Surface Methodology." Int. J. Mol. Sci. 13, no. 6: 7607-7616.

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