超临界CO2流体萃取海滨锦葵籽油的工艺条件优化  

Optimization of technology for oil extraction from Kosteletzkya virginica seeds by supercritical CO_2 fluid

作　　者：杨庆利[1,2,3] 禹山林[3] 秦松[1] 

机构地区：[1]中国科学院海洋研究所,青岛266071 [2]中国科学院研究生院,北京100039 [3]国家花生工程技术研究中心,青岛266100

出　　处：《农业工程学报》2009年第5期253-257,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家高技术研究发展计划项目(2007AA10Z189,2006AA10A114);公益性行业农业科研专项经费(nyhyzx07-014);国家科技支撑计划(2006BAD07A10)

摘　　要：为了提高海滨锦葵籽的利用价值,开发生物柴油新原料,该文以海滨锦葵籽为原料,利用超临界CO2流体萃取技术提取海滨锦葵籽油。通过单因素试验及正交试验研究了萃取压力、萃取温度、CO2流量和萃取时间等因素对油脂得率的影响,确定了超临界CO2流体萃取技术提取海滨锦葵籽油的最佳工艺条件。结果表明,在试验范围内各影响因素对海滨锦葵籽油得率作用的大小依次为:萃取压力>萃取温度>CO2流量>萃取时间。超临界CO2流体萃取技术提取海滨锦葵籽油的最佳工艺参数为:萃取压力25MPa,萃取温度45℃,CO2流量21kg/h,萃取时间为100min,在该工艺条件下萃取3次,海滨锦葵籽油得率达到19.35%。In order to improve the utilization of Kosteletzkya virginica seeds and develop a new material for biodiesel, Kosteletzkya virginica seeds were taken as raw materials and the supereritical CO2 fluid extraction technology was used to extract seed oil. The single factor experiment and the orthogonal experiment were carried out to study the effects of factors such as extraction pressure, extraction temperature, extraction time and supercritical CO2 flow on oil yield. The optimal technological conditions of oil extraction from Kosteletzkya virginica seeds by supercritical CO2 fluid were determined. The order of factors that influenced the oil yield within the experimental range was as follows： extraction pressure 〉 extraction temperature 〉 supercritical CO2 flow〉extraction time. The optimal technological parameters of oil extraction from Kosteletzkya virginica seeds should be as follows： extraction pressure 25MPa, extraction temperature 45℃, supercritical CO2 flow 21 kg/h and extraction time 100 min, and under such conditions, the total oil yield after extraction three times is 19.35%.

关 键 词：生物柴油 超临界流体 CO2 萃取 海滨锦葵籽 

分 类 号：TK6[动力工程及工程热物理—生物能]