化工进展2011，Vol.30Issue(6)：1213-1218,6.
尿素包合法纯化小桐子油多不饱和脂肪酸的工艺
Purification of polyunsaturated fatty acid from Jatropha Curcas L. seed oil by urea adduction fractionation
摘要
Abstract
The technological conditions of purifying polyunsaturated fatty acids ( PUFAs )derived from Jatropha curcas L. seed oil were studied by using urea adduction fractionation method. Different purification conditions on the purity of PUFAs were investigated, such as the kind of solvent, the mass ratio of unsaturated fatty acids( UFAs )-urea-methanol, crystallization temperature and cooling method.Methanol displayed the best results during the isolating process among three solvents. The purity of PUFAs increased gradually when the mass ratios of UFAs-urea were 1: 1, 1: 1.5, 1： 2 and 1： 2.5,with respective contents of PUFAs 69.38％, 84.58％, 94％ and 100％, but the yield of PUFAs reduced from 54.51％ to 9.63％. Increasing methanol dosage and keeping UFAs-urea mass ratio unchanged, the product yield of PUFAs increased evidently, but with slightly lower purity. Both purity ( 94.52％ ) and yield ( 23.78％ ) of PUFAs were optimized when inclusion temperature was -20 ℃. Slow cooling could lead to increased yield of raw PUFAs and purified product, with higher percentages of 10％ and 4％, respectively, compared with rapid cooling.关键词
小桐子油/多不饱和脂肪酸/尿素包合法/纯化Key words
Jatropha curcas L. seed oil/ polyunsaturated fatty acid/ urea adducfion fracfionation/purification分类
化学化工引用本文复制引用
吕微,蒋剑春,徐俊明..尿素包合法纯化小桐子油多不饱和脂肪酸的工艺[J].化工进展,2011,30(6):1213-1218,6.基金项目
国家林业局公益性行业专项经费(200904008,CAFYBB2008028)、国家863计划(2009AA05Z437)、国家自然科学基金(30700634)及江苏省自然科学基金(BK2009545)项目. （200904008,CAFYBB2008028）
