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个人信息Personal Information
教授
博士生导师
硕士生导师
性别:男
毕业院校:大连理工大学
学位:博士
所在单位:化工学院
学科:化工过程机械. 安全科学与工程
办公地点:化工实验楼H313
联系方式:Tel./Fax. +86-411-84986274
电子邮箱:jzyin@dlut.edu.cn
Analysis of the operation conditions for supercritical fluid extraction of seed oil
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论文类型:期刊论文
发表时间:2005-05-01
发表刊物:SEPARATION AND PURIFICATION TECHNOLOGY
收录刊物:SCIE、EI
卷号:43
期号:2
页面范围:163-167
ISSN号:1383-5866
关键字:supercritical fluid extraction; Hippophae rhamnoides L.; operation conditions
摘要:In this paper, a SCFE set-up with an extraction volume of I L was established, with which Hippophae rhamnoides L. seed oil was extracted using supercritical CO2. The experiments show that many factors have impacts on the oil yield, such as extraction pressure, temperature, and fluid flow rate, as well as seed particle size and filling quantity. For the extraction process of Hippophae rhamnoides L. seed oil, the optimum conditions were as follows: extraction pressure of 20-30 MPa, extraction temperature of 35-40 degrees C, supercritical CO2 flow rate of 0.15-0.3 m(3)/h, and extraction time of 4-5 h. Under such a condition, the oil obtained is very lucid and good quality, and the yield is as high as above 90%. GC analysis shows that the oil contains 11.44% of saturated fatty acid and 88.56% of unsaturated fatty acid. From the changes of oil yield with the extraction time, it can be concluded that the extraction process contains three stages: fast extraction stage (approximate a linear style), transitional stage (very short period of time) and the slow extraction stage Oust a little amount of oil can be extracted in this stage). At the first stage, 75-80% of the oil has been extracted out. (C) 2004 Elsevier B.V. All rights reserved.