食品科学 ›› 2011, Vol. 32 ›› Issue (20): 221-225.doi: 10.7506/spkx1002-6630-201120046

• 分析检测 • 上一篇    下一篇

高粱原花青素的ESI-MS分析及其低聚体的RP-HPLC-MS/MS法分离鉴定

徐丽嫚,黄 曼,涂 世,陈 静,刘 睿*   

  1. 华中农业大学食品科技学院
  • 出版日期:2011-10-25 发布日期:2011-10-12
  • 基金资助:
    华中农业大学优硕培植项目/ 中央高校基本科研业务费专项(201010

ESI-MS Analysis of Procyanidins from Sorghum Episperm and RP-HPLC-ESI-MS/MS Separation and Identification of Its Oligomers

XU Li-man,HUANG Man,TU Shi,CHEN Jing,LIU Rui*   

  1. (College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China)
  • Online:2011-10-25 Published:2011-10-12

摘要: 以高粱加工后的副产物--高粱外种皮为原料,采用电子喷雾离子化质谱(electrospray ionization-mass spectroscopy,ESI-MS)对ADS-17大孔树脂纯化的高纯度高粱原花青素(sorghum procyanidins,SPC)的组成进行分析,并通过反相高效液相色谱(reverse phase high-performance liquid chromatography,RP-HPLC)-质谱(RP-HPLC-MS/MS)联用对Toyopearl HW-40凝胶色谱分离的SPC-5级分进行分离鉴定。结果显示:SPC为低聚体原花青素,包含有儿茶素/表儿茶素单体、原花青素二~六聚体;SPC-5由8种三聚体和1种二聚体组成。

关键词: 高粱原花青素, 凝胶色谱, 电子喷雾离子化质谱(ESI-MS), 反相高效液相色谱-质谱联用(RP-HPLC-ESI-MS/MS), 鉴定

Abstract: The composition of high-purity procyanidins purified by ADS-17 macroposours resin chromatography from sorghum episperm as a byproduct of sorghum processing was analyzed by electrospray ionization- mass spectroscopy (ESI-MS). Fraction SPC-5 separated from the procyanidins by Toyopearl HW-40 resin chromatography was identified by RP-HPLC-ESI-MS/MS. The high-purity procyanidins were found to be procyanidolic oligomers, including catechin/epicatechin monomers, dimmers, trimers, tetrames, pentamers and hexamers. SPC-5 consisted of 8 trimers and 1 dimmer.

Key words: sorghum procyanidins, gel chromatography, electrospray ionization-mass spectroscopy (ESI-MS),
reverse phase high-performance liquid chromatography-mass spectroscopy/mass spectroscopy (RP-HPLC-ESI- MS/MS),
identification

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