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中文摘要：
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%1cm(590nm)达65.92。
英文摘要：
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 ...
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