超临界CO_2提取野菊花中的精油  

Supercritical CO_2 Extraction of Essential Oil from the Flower of Chrysanthemum indicum Lamb

作　　者：罗金岳[1] 王贝贝[1] 

机构地区：[1]南京林业大学化学工程学院,江苏南京210037

出　　处：《生物质化学工程》2007年第6期11-14,共4页Biomass Chemical Engineering

摘　　要：采用超临界CO2萃取技术,研究了从野菊花中提取精油的工艺并鉴定其主要化学成分。对影响超临界CO2萃取精油的各因素进行了单因素试验研究,得到较适宜的萃取工艺条件,萃取温度35℃、分离温度30℃、萃取时间90min、萃取压力25MPa、CO2流量为30kg/h。在上述萃取工艺条件下,精油得率9.65%。经GC-MS分析鉴定了野菊花精油成分43个,主要是萜类及其含氧衍生物、烷烃类化合物和酯类化合物等。The extraction and isolation conditions of essential oil were studied using the flower of Chrysanthemum indicum Lamb as the starting material with supercritical CO2 process. Influences of extraction temperature, extraction pressure, and extraction time on the content of essential oil were investigated, and suitable conditions were determined based on the single-factor tests. They were as follows： extraction temperature 35℃, separation temperature 30℃, extraction time 90 min, extraction pressure 25 MPa and CO2 flow 30 kg/h. The yield of essentical oil was 9.7 % under above conditions. Using GC-MS analysis, 43 compounds were identified. They were mainly terpen compounds and their oxides, hydrocarbon compounds, ester compounds and so on.

关 键 词：野菊花 精油 超临界二氧化碳 萃取 

分 类 号：TQ654[化学工程—精细化工]