茶叶中提取咖啡因的回收方法的比较  

Comparison of the Recovery Method in the Extract of Caffeine from Tea

作　　者：李忠瑞[1] 王斌[1] 张琦红[1] 张汝君[1] 林玲[1] 俞群娣[1] 

机构地区：[1]浙江海洋学院食品与药学学院,浙江舟山316004

出　　处：《安徽农业科学》2010年第29期16208-16209,共2页Journal of Anhui Agricultural Sciences

基　　金：浙江省自然科学基金资助项目(Y2080579);浙江海洋学院校级重大课题资助项目(21135030107)

摘　　要：[目的]优选茶咖啡因提取方法。[方法]采用真空旋转蒸干仪替代传统的溶剂回收和焙炒方法,并以提取咖啡因产量和流程所需时间为指标,考察了2种方法的优劣。[结果]体积分数为95%乙醇提取的茶咖啡因粗提液,55℃旋蒸10min,再将温度上升至85℃旋蒸10min可得咖啡因粗提粉末。[结论]改进方法操作简单,可在保证提取率的情况下,大大节省工作时间。[Objective] The extract method of the caffeine from tea was preferred.[Method] The traditional method was replaced by the dryness instrument of vacuum rotary evaporation in solvent recovery and roasted method,and the two-method was compared through the investigation of the output of caffeine and consuming time,which was thought as the indicator in the process of its extract.[Results] The crude caffeine powder could be recovered from the crude extract of the caffeine from tea with 95% volume under the operation process：the rotary steam was for 10 minutes in the temperature of 55 ℃ and then the temperature was raised to 85 ℃ for another 10 minutes＇ rotary steam.[Conclusion] The improved method was simple,which guaranteed low time-consuming in the case of certain extraction rate.

关 键 词：咖啡因 改进方法 旋转蒸发仪 

分 类 号：S571.1[农业科学—茶叶生产加工]