武汉工程大学学报2013，Vol.35Issue(2)：42-47,6.DOI:10.3969/j.issn.1674-2869.2013.02.009
无催化多不饱和脂肪酸甘油酯的合成和优化
No catalytic synthesis and optimization of polyunsaturated fatty acids glyceride
摘要
Abstract
The green technology of directly synthesising polyunsaturated fatty acid ester with polyunsaturated fatty acids (PUFA) and glycerin dehydration at the conditions of non-catalyzed, solvent-free and decompressing operation was developed according to the traditional synthesis technology disadvantage such as solvent residue, the complex follow-up processing and serious environmental pollution. The product component was characterized by the thin layer chromatography (TLC) , infrared spectrum(IR) and gas chromatograph-mass spectrometer (GC-MS) in the experiment. The effect of the conversion rate of PUFA was discussed at various reaction conditions such as reaction temperature, reaction time and glycerol/fatty acid ratio, with the conversion rate of PUFA as index. The experimental data were analyzed by Fortran program to obtain regression equation and the experimental condi-tions were optimized. The results show that the main components are monostearin, diacylglycerol and triacylgl-ycerol at the the conditions of non-catalyzed, solvent-free and decompressing operation. The optimal process conditions are as fellow; The reaction temperature is 194. 28 ℃ , the reaction time is 5h and the glycerol/fatty acid ratio is 0. 94. In this condition, the conversion rate of PUFA reaches to 93. 06%. The average relative error is 3. 62% from the comparison of the regression value and experimental value, which indicates that the mathematical model gotten from quadratic regression experimental design is reliability.关键词
多不饱和脂肪酸/多不饱和脂肪酸甘油酯/合成/优化Key words
PUFA/ PUFA glyceride/ synthesis/ optimization分类
化学化工引用本文复制引用
何寿林,徐玮,辛高峰,孙成..无催化多不饱和脂肪酸甘油酯的合成和优化[J].武汉工程大学学报,2013,35(2):42-47,6.
