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林产化学与工业

林产化学与工业 ›› 2003, Vol. 23 ›› Issue (3): 69-72.

• 研究报告 • 上一篇    下一篇

水溶性茶绿色素的提取及性质研究

杨晓萍, 郭大勇   

  1. 华中农业大学 园艺林学学院, 湖北 武汉 430070
  • 收稿日期:2002-10-10 修回日期:1900-01-01 出版日期:2003-09-30 发布日期:2003-09-30

STUDY ON EXTRACTION AND CHARACTERIZATION OF WATER-SOLUBLE TEA GREEN PIGMENT

YANG Xiao-ping, GUO Da-yong   

  1. Huazhong Agriculture University of Horticulture and Forestry, Wuhan 430070, China
  • Received:2002-10-10 Revised:1900-01-01 Online:2003-09-30 Published:2003-09-30

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摘要： 利用低档茶叶及其废弃物制取纯天然水溶性茶绿色素,并对该色素的性质、制备过程中的两个主要工序———皂化、铜代的最佳工艺条件进行了研究。结果表明:用1%NaOH在80℃水浴煮90min是叶绿素皂化的最佳条件;然后将溶液pH值调为3.0,在80℃水浴煮60min,可使铜代完全;由此法制得的水溶性茶绿色素在pH值为2.2～5.0时,稳定性较好,热及大多数金属离子对其影响较小,维生素C对其稳定性有一定保护作用,不失为一种优质的天然食用色素。

关键词: 茶绿色素, 皂化

Abstract: Water soluble tea green pigment(TGP) were extracted from low grade tea leaf and waste tea etc.Physico chemical properties and processes on saponification and copper substitution reaction were investigated.Results showed that optimum condition of saponification is sodium hydroxide 1% for 90 min, temperature of water bath 80℃.At pH value 3.0, temperature of water bath 80℃ for 60 min, a high proportion sodium copper chlorophyllin was achieved.The pH value in the range of 2.2-5.0 had no effect on the pigment.Heat and most of metal ions exerted insignificant effect, while ascorbic acid had protective effect on the tone of pigment.

Key words: tea green pigment, saponification

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