摘要
茶叶用８０％乙醇水溶液在５０℃恒温浸提两次，每次３０ｍｉｎ，浓缩浸提液，经Ｔ３５２复合物溶液进行脱色、乙酸乙酯提纯、柠檬酸水溶液洗涤后，减压浓缩回收乙酸乙酯，茶多酚得率为１３．００％，茶多酚的纯度及咖啡因含量分别为９６．４２％、３．６６％。
Green tea powder were soaked with 80% ethyi alcohol at 50℃ two times,and the extracts were concentrated.Being,eliminated pigment with T352 reagent,the aqueous layer was extracted,with EtoAC three times.The EtoAC layer was backextracted with citric acid solution,then the EtoAC was removed with a rotary evaporator from the extracts.The product percentage of Tea Polyphenols was 13.00%,the purity and the content of caffeine in the Tea Polyphenols was 96.42% and 3.66% respectivity.
出处
《食品工业科技》
CAS
CSCD
北大核心
1997年第6期32-34,共3页
Science and Technology of Food Industry
