Depletion of high-abundance flavonoids by metal complexation and identification of low-abundance flavonoids in Scutellaria baicalensis Georgi

文献类型： 外文期刊

第一作者： Wang, Hailong

作者： Wang, Hailong;Xiao, Shengyuan;Cao, Jin;Xu, Shiquan;Wang, Yingping;Xiao, Shengyuan;Gu, Daozhao;Xiao, Shengyuan

作者机构：

关键词： High-abundance constituent depletion;Low-abundance constituent;Scutellaria baicalensis;Sulphated flavones

期刊名称：JOURNAL OF CHROMATOGRAPHY A （ 影响因子：4.759； 五年影响因子：4.302 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The complexation of metal cations and flavonoids with 5-hydroxyl or ortho-hydroxyl groups was successfully used for high-abundance flavone depletion from a botanical extract in this study. Due to their structural differences, five of the most highly abundant constituents, baicalin, wogonoside, baicalein, wogonin and oroxylin A, were successfully depleted from the ethanol extract of Radix Scutellariae. The depletion rates were approximately 99%, 85%, 99%, 70% and 76%, respectively. The recoveries of low-abundance constituents were very strong (approximately 70-100%). The efficiency of the low-abundance compounds' identification by high performance liquid chromatography electrospray tandem mass spectrometry (HPLC ESI MS/MS) was remarkable after the high-abundance constituents were removed. The number of compounds identified from the HPLC MS/MS data was 250% greater than the number of compounds identified in the untreated total extract. One hundred seventeen flavonoids were identified in the ethanol extract of Radix Scutellariae using this method, which was much greater than the number identified in previous studies without high-abundance constituent depletion. Among them, 13 sulphated flavonoids were identified. These low-abundance sulphated flavonoids can barely be detected in untreated total extracts. To the best of our knowledge, this is the first reported evidence that sulphated flavonoids have been identified from Radix Scutellariae. This method will facilitate the removal of high-abundance flavonoids and the identification of low-abundance compounds in botanical extracts.

分类号： O65

  • 相关文献

[1]Effects of ecological factors on secondary metabolites and inorganic elements of Scutellaria baicalensis and analysis of geoherblism. Guo LanPing,Wang Sheng,Yang Guang,Zhao ManXi,Ma WeiFeng,Zhang XiaoBo,Li Xuan,Huang LuQi,Zhang Ji,Han BangXing,Chen NaiFu. 2013

[2]Rapid Isolation and Determination of Flavones in Biological Samples Using Zinc Complexation Coupled with High-Performance Liquid Chromatography. Sun, Chenghe,Wang, Hecheng,Wang, Yingping,Xiao, Shengyuan,Sun, Chenghe,Wang, Hecheng,Xiao, Shengyuan.

作者其他论文 更多>>

微信小程序