食品科学 ›› 2002, Vol. 23 ›› Issue (11): 68-73.

• 工艺技术 • 上一篇    下一篇

吸附树脂法制备茶多酚精品的工艺研究

 董文宾, 胡英, 张建华   

  1. 西北轻工业学院食品系
  • 出版日期:2002-11-15 发布日期:2011-12-31

Study on Macropore Resin Adsorbing Technology for Preparing the High Purity TP Product

 DONG  Wen-Bin, HU  Ying, ZHANG  Jian-Hua   

  • Online:2002-11-15 Published:2011-12-31

摘要: 本文研究了用大孔吸附树脂制备茶多酚精品的工艺:用正交试验优化的浸提方案浸提茶叶所得的浸提液,浓缩后调节pH值,使色素和咖啡碱得到预分离后,选用NKA-2大孔吸附树脂进行吸附柱层析,解吸剂用80%乙醇,解吸液以乙酸乙酯萃取两次可得茶多酚精品,提取率13.65%,纯度可达94.72%。

关键词: 茶多酚, 吸附树脂

Abstract: The method for abstracting tea polyphenols(TP) from tea leaves by using macroporous resins was studied in this paper. The optimal operation conditions of infrusion were found by orthogonal experiment with decoloring and decaffeinating crude extract by regulating pH value, loading it onto a column containing an adsorbent macopore resin NKA -2, for specifically absorbing TP, desorbingTPwith80% ethyl alcohol and extracting said solvent with EtAc 2 time. We obtained the high purity TP product. The purity reached 94. 72% and the yield was 13.65%.

Key words: Aea polyphnols , Aadsorption resin