紫苏叶挥发油超临界CO_2萃取工艺的研究  

Technology on Extracting the Volatile Oils of the Leaves of Perilla frutescens With Supercritical CO_2

作　　者：曾虹燕[1] 李国龙[1] 黄靓 冯乐[1] 

机构地区：[1]湘潭大学生物技术研究所,湖南湘潭411105 [2]湘潭化纤厂,湖南湘潭411101

出　　处：《湘潭大学自然科学学报》2003年第2期46-48,64,共4页Natural Science Journal of Xiangtan University

摘　　要：首次探讨了超临界CO2 萃取的压力、温度、流量、时间等条件对萃取紫苏叶挥发油的影响 ,确定其最佳萃取条件 :萃取压力 2 0MPa ,温度 45℃ ,CO2 流量 3 0kg h和 10 0min ,萃取率为 5 .13 % .水蒸气蒸馏萃取得率为 0 .415 % .超临界CO2萃取的收率高 。Perilla frutescens, an annual herb, is an important medical and edible plant. In the paper, we firstly studied the effect of the pressure, the temperature, the CO 2 flowing and extracting time on extraction of the volatile oil of its leaves with supercritical CO 2 , and determined its optimal extracting conditions: the pressure 20 Mpa, the temperature 45 ℃, CO 2 flowing rate30 kg/h and the time 100 min. The volatile oils were obtained by supercritical CO 2 and steam distillation, extraction rates are 5.13% and 0.415% respectively. The rate of the former is higher, and its time is shorter.

关 键 词：紫苏 叶 挥发油 超临界CO2萃取 水蒸气蒸馏 

分 类 号：TQ654.2[化学工程—精细化工]