超临界CO_2萃取当归净油的工艺研究  

Technic Study on Extraction of Ethreal Oil from Angelica by Supercritical Carbon Dioxide

作　　者：李昶红[1] 李薇[2] 

机构地区：[1]湖南大学衡阳分校化工系,湖南衡阳421101 [2]衡阳师范学院化学与材料科学系,湖南衡阳421008

出　　处：《衡阳师范学院学报》2002年第6期66-68,共3页Journal of Hengyang Normal University

摘　　要：采用超临界CO_2萃取当归中有效成分当归内酯。研究了萃取压力、萃取温度、以及CO_2流量和萃取时间对产品的收率和品质的影响。其最优化工艺条件为:压力20MPa,温度35℃,当CO_2流量为20m^3/h时,萃取时间为2小时,在该条件下得到的产品其有效成分当归内酯含量达到89.35％,原料的萃取率达到92.5％。Extraction the efficient angelica lactone from angelica by supercritical carbon dioxide at different conditions of pressure, temperature to estimate the yield and quality, and the relation of carbon dioxide outflow and contact time. The better conditions is pressure range 20MPa, temperature range 35℃ and contact time 2h. Under the optimun technological conditions, the contect of the angelica lactone in the ethereal oil is 89. 35% and the extract ratio of the lactone is 92. 5%.

关 键 词：超临界CO2萃 当归净油 当归内酯 中药 有效成分 萃取工艺 萃取率 

分 类 号：R284.2[医药卫生—中药学] TQ460[医药卫生—中医学]