超临界CO_2萃取沙棘油的研究  

STUDY ON SUPERCRITICAL CO_2 EXTRACTION OF OIL FROM HIPPOPHAE RHAMNOIDES LINN.SEEDS

作　　者：程康华[1] 高拥军[1] 

机构地区：[1]南京林业大学化工学院,江苏南京210037

出　　处：《林产化学与工业》2004年第4期91-93,共3页Chemistry and Industry of Forest Products

摘　　要：　本研究以沙棘(HippophaerhamnoidesLinn.)油的最大得率为目标,通过正交试验得到了超临界CO2萃取沙棘油的最佳工艺条件为:萃取压力20MPa、萃取温度40℃、萃取时间2h。同时,为了得到游离酸含量和水分及挥发物较低的优质沙棘油,采用二级分离的方法分离沙棘油,通过分析、比较一级分离和二级分离所得沙棘油物理指标,认为二级沙棘油分离是一个好的方法,具有工业使用价值。In order to obtain the highest yield of oil from Hippophae rhamnoides Linn.seeds,orthogonal test of supercritical CO_2 extraction was carried out to obtain optimum condition as follows:pressure 20 MPa,temperature 40 ℃,time 2 h.Meanwhile,in order to get high quality H.rhamnoides oil with lower free fatty acid content,two-step separation method was used:the first step at pressure 12 MPa and temperature 40 ℃;the second step at pressure 6 MPa and temperature (28 ℃).Analysis and comparison of physical properties of H.rhamnoides oil showed that the two-step (separation) method is a good method and can be used industrially.

关 键 词：超临界CO2萃取 沙棘油 游离脂肪酸 

分 类 号：TQ028.32[化学工程] TQ91