燕麦麸油的萃取及脂肪酸成分分析  

Extraction and Fatty Acids Analysis of Bran Oil in Oat

作　　者：屠兰英[1] 黄梓平[1] 赵启文[1] 

机构地区：[1]青海大学化工学院,西宁810016

出　　处：《湖北农业科学》2012年第15期3290-3291,共2页Hubei Agricultural Sciences

基　　金：青海省科技厅攻关项目(2008-G-174);农业部引进国际先进农业科学技术项目

摘　　要：采用超临界CO2法从燕麦(Avena sativa)品种青海444中萃取麸油,设计正交试验优化萃取工艺。结果表明,萃取压力对燕麦麸油的萃取率有极显著影响(P<0.01),萃取时间和萃取温度对萃取率有显著影响(P<0.05)。优化的萃取工艺条件为萃取压力25 MPa、萃取温度40℃、萃取时间2.5 h,此条件下燕麦麸油的萃取率为8.572%。GC-MS分析表明青海444燕麦麸油中主要含有5种脂肪酸,其中总不饱和脂肪酸含量达85.366%,油酸和亚油酸的含量分别为41.175%和40.558%。Supercritical C02 method was adopted to extract brand oil from oat （Avena sativa） variety Qinghai 444; and orthogonal design was applied to optimize the extraction. The results showed that extraction pressure had very significant effect on the yield of bran oil （P〈0.01）; while extraction temperature and extraction time had significant effect （P〈0.05）. The opti- mum extraction conditions were, extraction pressure, 25 MPa; extraction temperature, 40 ~C; and extraction time, 2.5 hours; the yield of oat bran oil was 8.572% under these conditions. According to GC-MS analysis, there were 5 components in oat bran oil, among which the content of total unsaturated fatty acid was 85.366%; and the content of oleic acid and linoleic acid was 41.175% and 40.558%, respectively.

关 键 词：燕麦(Avena sativa) 麸油 超临界CO2萃取法 脂肪酸成分 

分 类 号：S512.6[农业科学—作物学] TQ644.14[化学工程—精细化工]