树脂法提取茶多酚的工艺研究  

Study on extraction of tea polyphenol by resin

作　　者：曹雪文 熊道陵[1] 王露琦 宗毅 欧阳少波 郭彤麟 CAO Xuewen;XIONG Daoling;WANG Luqi;ZONG Yi;OUYANG Shaobo;GUO Tonglin(Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学材料冶金化学学部

出　　处：《有色金属科学与工程》2019年第5期54-60,共7页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(51364014);江西省高校专业综合改革试点资助项目(SZG-14-01-01);江西省教育厅科学技术研究资助项目(GJJ170547);国家级大学生创新创业训练项目(201710407001);2018年江西省高校课程育人共享计划项目;江西理工大学博士启动基金(jxxjbs17034);江西理工大学大学生创新创业训练项目(DC2018-013)

摘　　要：利用12种树脂对茶汤中茶多酚的吸附和脱附性能进行研究,得出DM-16X大孔吸附树脂是较优实验树脂.实验重点研究了DM-16X树脂对茶多酚的动态吸附与脱附工艺.结果得出当吸附速度为6 BV/h(1 BV=10 mL树脂体积)时,茶多酚的吸附效果较优;在吸附流速为6 BV/h时,为避免发生穿透现象,含茶多酚浓度为1.51 mg/mL的茶汤在吸附实验中体积控制在12.5 BV以内.在脱附实验中,脱附液为含乙醇70%的溶液,在脱附液体积为80 mL和脱附液流速为8 BV/h时,脱附效果较好.在较优操作工艺条件下,制得的茶多酚纯度可达到76.57%,其中4种儿茶素EGC、EC、ECG、EGCG的总含量达到了65.62%,咖啡碱含量为16.96%.DM-16X,a macroreticular adsorption resin,was selected as the best adsorbent among 12 types of resins that were used in the adsorption and desorption experiments of tea polyphenol from tea soup.Its process of dynamic adsorption and desorption of tea polyphenol was investigated in detail.It was concluded that its adsorption of tea polyphenol reached best at the adsorption velocity of 6BV/h(1BV=10 mL resin).However,the volume of tea soup with the concentration of tea polyphenol of 1.51 mg/mL was controlled below 12.5BV in case of penetration phenomenon.Its desorption reached best when the volume and velocity of the desorption solution,with the concentration of ethanol of 70%,were 80 mL and 8 BV/h,respectively.Under the optimum operation process,the purity of tea polyphenol obtained could reach as high as 76.57%,in which the total content of four catechins,namely EGC,EC,ECG,EGCG,reached about 65.62%and the concentration of caffeine was about 16.96%.

关 键 词：茶多酚 DM-16X 大孔树脂 儿茶素 咖啡碱 

分 类 号：TF111.31[冶金工程—冶金物理化学]