食品科学 ›› 2009, Vol. 30 ›› Issue (3): 155-158.doi: 10.7506/spkx1002-6630-200903035

• 生物工程 • 上一篇    下一篇

利用双水相萃取栀子黄废液中的栀子苷酶法生产栀子蓝色素的研究

梁华正,李 媛,杨水平   

  1. 东华理工大学生物系
  • 收稿日期:2008-01-24 修回日期:2008-10-01 出版日期:2009-02-01 发布日期:2010-12-29
  • 通讯作者: 梁华正 E-mail:hzhliang@ecit.edu.cn
  • 基金资助:

    国家自然科学基金项目(20505003);江西省自然科学基金项目(2007GZN0465)

Enzymatic Production of Gardenia Blue from Geniposide from Gardenia Yellow Waste Liquid by Aqueous Two-phase Extraction

LIANG Hua-zheng,LI Yuan,YANG Shui-ping   

  1. (Department of Biology, East China Institute of Technology, Fuzhou 344000, China)
  • Received:2008-01-24 Revised:2008-10-01 Online:2009-02-01 Published:2010-12-29
  • Contact: LIANG Hua-zheng E-mail:hzhliang@ecit.edu.cn

摘要:

研究有机溶剂/ 磷酸氢二钾双水相体系对栀子黄废液中栀子苷的萃取条件,并将萃取后的栀子苷用于栀子蓝色素的生产。根据分相后上下相中栀子苷的分配系数及两相体积比,选择合适的双水相体系,并改变溶剂与废液的体积比、磷酸氢二钾加入量、废液pH 值以及萃取温度等参数,研究萃取栀子苷的最佳条件。实验结果表明,乙醇/ 磷酸氢二钾为合适的萃取体系。当双水相体系总量为10ml 时,乙醇与栀子黄废液的体积比为6:4,加入磷酸氢二钾1.0g,体系分相完全后栀子苷分配系数(K)为4.56,两相体积比(R)为6.38,栀子黄废液pH 值及萃取温度在正常条件下对K 值及R 值影响不大。放大实验表明,以乙醇/ 磷酸氢二钾体系萃取栀子黄废液中的栀子苷,所得栀子苷纯度可达62.12%,收率可达96.32%。萃取后的栀子苷经β- 葡萄糖苷酶水解精氨酸显色后得到栀子蓝色素,色价E1% (590nm)65.92。

关键词: 双水相萃取, 栀子苷, 分配系数, 栀子蓝色素

Abstract:

The extraction conditions of geniposide in gardenia yellow waste liquid by aqueous two-phase extraction were studied. According to partition coefficient and volume ratio, ethanol-K2HPO4 system was chosen to separate geniposide. The optimum extraction conditions are as follows volume ratio of ethanol to gardenia yellow waste liquid 6:4, and addition amount of K2HPO4 log in 1.0ml of ethanol-gardenia yellow waste liquid. Under these conditions the partition coefficient is 4.56, the volume ratio is 6.38. The pH value of waste liquid and extraction temperature have little influence on partition coefficient and volume ratio. The enlarged experiment showed that the purity of geniposide reaches 62.12%, and the yield of geniposide reaches 96.32% by this system. The color value E1% (590 nm)of gardenia blue which is produced by the reaction between genipin from hydrolyz geniposide and arginine reaches 65.92.

Key words: aqueous two-phase extraction, geniposide, partition coefficient, gardenia blue

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