Chinese Journal of Applied Chemistry ›› 2011, Vol. 28 ›› Issue (05): 537-541.DOI: 10.3724/SP.J.1095.2011.00415
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GUO Yanyan, YIN Weiping*, LIU Pu, HU Ya, YAN Mengjie, SUN Xiangqian
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Abstract:
The ionic liquids have been known as “green” or “environmentally friendly” solvents and show potentials to replace traditional solvents. A new approach was set up for the extraction and separation of isoflavonoids from the Rhynchosia volubilis Lour using the 1-butyl-3-methyl tetrafluoroborate([Bmim]BF4) ionic liquid. Three isoflavonoids were obtained from the 70% alcohol extract of Rhynchosia volubilis. Based on the spectra analysis, their structures have been confirmed to be cajanone, 3-[4′-(1″-methoxy)-propoxy]-phenyl-5,7-dihydroxy-isoflavone and Biochanin A, in which the 3-[4′-(1″-methoxy)-propoxy]-phenyl-5,7-dihydroxy-isoflavone is a novel compound. The result had shown that the [Bmim]BF4 could extract isoflavones effectively and selectively. A protocol for determining the content of each component in the isoflavonoid was established. The overall pharmacognosical content of isoflavone was 0.73% using cajanone as the standard and its maximum absorption(270 nm) as the determination wavelength. The average recovery rate and relative standard deviation was 99.94% and 3.66%, respectively. The recycling rate of the ionic liquid was 76.7%.
CLC Number:
O629.9
GUO Yanyan, YIN Weiping*, LIU Pu, HU Ya, YAN Mengjie, SUN Xiangqian. Extraction and Separation of Isoflavonoids from Rhynchosia volubilis Lour Using Ionic Liquid[J]. Chinese Journal of Applied Chemistry, 2011, 28(05): 537-541.
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URL: http://yyhx.ciac.jl.cn/EN/10.3724/SP.J.1095.2011.00415
http://yyhx.ciac.jl.cn/EN/Y2011/V28/I05/537