食品科学 ›› 2011, Vol. 32 ›› Issue (24): 248-251.doi: 10.7506/spkx1002-6630-201124053

• 分析检测 • 上一篇    下一篇

凝胶色谱分离高梁外种皮中低聚体原花青素

李莹1,张晓攀2,叶汉英1   

  1. 1. 武汉软件工程职业学院环境与生化工程系
    2.华中农业大学食品科学技术学院
  • 出版日期:2011-12-25 发布日期:2011-12-29
  • 基金资助:
    武汉市教育局市属高校科学研究项目(2009168)

GPC Separation of Procyanidin Oligomers from Sorghum Episperm

LI Ying1,ZHANG Xiao-pan2,YE Han-ying1   

  1. (1. Department of Environmental and Biochemical Engineering, Wuhan Vocational College of Software and Engineering, Wuhan 430205, China;2. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China)
  • Online:2011-12-25 Published:2011-12-29

摘要: 建立高粱原花青素分离及其组成分析的方法。采用乙醇溶液提取高粱外种皮中原花青素,通过ADS-17大孔树脂初步纯化,得到高粱原花青素,进而用Toyopearl HW-40凝胶色谱对高粱原花青素分离,并用紫外光谱分析及高效液相色谱-二极管阵列检测法初步分析鉴定。结果表明:Toyopearl HW-40凝胶色谱分离得到A、B、C、D、E、F六个部分。经过紫外光谱分析初步鉴定出级分A、C、D、E、F均为原花青素,B为黄酮;经高效液相色谱-二极管阵列检测法分析可知,级分C和D分别为原花青素的二聚体B1和单体儿茶素,级分F为原花青素的低聚体。建立的高粱原花青素的分离分析方法效果良好。

关键词: 高梁外种皮, 原花青素, 凝胶色谱, HPLC, 分离鉴定

Abstract: A method for the separation and composition analysis of procyanidins from sorghum episperm was established in this study. Sorghum episperm procyanidins (SPCs) were extracted with aqueous ethanol, primarily purified by ADS-17 macroporous resin adsorption, fractionated by Toyopearl HW-40 gel chromatography, and preliminarily identified by UV spectroscopy and HPLC with diode array detection (DAD). Fractions A, B, C, D, E and F were obtained as a result of Toyopearl HW-40 gel chromatographic separation. According to the results of UV spectroscopic analysis, fraction B was flavonoid, and all other fractions were procyanidin. Fractions C, D and F were identified by HPLC-DAD as procyanidin dimer B1, individual catechin and procyanidin oligomer, respectively. The method allowed good separation and analysis of procyanidins from sorghum episperm.

Key words: sorghum episperm, procyanidins, gel chromatography, high performance liquid chromatography (HPLC), isolation

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