天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (2): 238-243.

• 开发研究 • 上一篇    下一篇

老熟莲子壳多酚的树脂法纯化及稳定性研究

马双双,刘莹,陈中惠,黄文,王益*   

  1. 华中农业大学食品科技学院,武汉 430070
  • 出版日期:2014-02-28 发布日期:2014-12-12

Purification and Stability of Polyphenols from Ageing Lotus Seed Epicarp

MA Shuang-shuang, LIU Ying, CHEN Zhong-hui, HUANG Wen, WANG Yi*   

  1. College of Food Science and Technology,Huazhong Agricultural University,Wuhan 430070,China
  • Online:2014-02-28 Published:2014-12-12

摘要: 通过吸附和解吸实验确定柱层析分离和纯化莲子壳多酚的大孔树脂及工艺参数,并对莲子壳多酚的稳定性进行研究。结果表明:AB-8树脂最适合于莲子壳多酚的分离纯化,最佳工艺条件为:上样浓度4.5 mg/mL,上样速度0.5 mL/min,水洗至无糖后,以50%的乙醇洗脱,洗脱流速2 mL/min,洗脱体积4 BV,在此条件下,莲子壳多酚纯度达69.34%。莲子壳多酚的稳定性受光、温度和pH影响,温度越高,光照越强,碱性越强,降解程度越大。Fe3+、Fe2+、Al3+、Sn2+、Cu2+、Pb2+这6种离子对莲子壳多酚具有显著的破坏作用。

关键词: 莲子壳, 多酚, 大孔树脂, 纯化, 稳定性

Abstract: In this study,the static adsorption and desorption properties of six macroporous resins were compared for the purification of lotus seed epicarp polyphenols(LSEPPs).The purification conditions of the most suitable macroporous resin were optimized.In addition,the stabilities of LSEPPs were also investigated.The results indicated that AB-8 resin had the optimal adsorption and desorption performance.The optimal adsorption conditions with AB-8 macroporous resin were determined as follows:solution concentration of 4.5 mg/mL,feeding rate of 0.5 mL/min,and the optimal desorption conditions with AB-8 macroporous resin were ethanol concentration of 50%,elution rate of 2 mL/min,elution volume of 4 BV.Under these conditions,the purity of LSEPPs was 69.34%.The stabilities of LSEPPs were improved by low temperature,light-avoiding and midly acidic conditions.Fe3+, Fe2+,Al3+,Sn2+,Cu2+ and Pb2+ had destructive effect on LSEPPs.

Key words: lotus seed epicarp, polyphenols, macroporous resin, purification, stability

中图分类号: 

TS209