作　　者： ; ; ; ; ;

机构地区： 武汉工程大学化工与制药学院湖北省新型反应器与绿色化学工艺重点实验室

出　　处： 《精细石油化工进展》 2007年第3期25-27,31,共4页

摘　　要： 茶叶浸提液分别用1%壳聚糖和D101大孔吸附树脂去杂后,用碱式碳酸铜沉淀得茶氨酸铜盐。茶氨酸铜盐用1mol/L硫酸解析,除去Cu2+和SO42-后,浓缩重结晶得到茶氨酸,提取率34%,纯度99.28%。 L - theanine was prepared from Chinese Tea by ion precipitation. Under the optimum conditions of soaking,the extractive was dealed with 1% chitosan and D101 nonpolar macroporous adsorption resin respectively and then was precipitated by Cu2 （OH）2CO3. After dissolving with 1 mol/L H2SO4, L- theanine was obtained by concentration and recrystallization. The yield of L - theanine was 34 % with purity of 99.28 %.

关 键 词： 茶氨酸 离子沉定法 提取

领　　域： [化学工程]