摘要
在无溶剂体系中,通过脂肪酶Novozyme 435催化甘油解法合成功能性油脂1,3-甘油二酯。在底物摩尔比1∶1(甘油与天然谷物调和油比),脂肪酶添加量8%(占底物质量)条件下,研究酶催化反应过程中不同HLB值的蔗糖脂肪酸酯和反应温度对1,3-甘油二酯生成量的影响。研究结果表明,选择HLB值为11的亲水性蔗糖脂肪酸酯,在添加量0.5%,反应温度60℃下反应24 h,1,3-甘油二酯生成量最高,为42.61%。
Abstract ： The functional lipid 1,3 - diacylglycerol was synthesized in free - solvent system by glycerolysis with Novozyme 435 as catalyst. Under the conditions of molar ratio of substrates 1 ： 1 （ ratio of glycerol to natural grain blend oil） and lipase dosage 8% （ based on the mass of substrates）, the effects of sucrose fatty acid esters with different HLB values and reaction temperature on the yield of 1,3 - diacylglycerol were studied. The results showed that under the conditions of hydrophilic sucrose fatty acid esters （ HLB value 11 ） dosage 0.5%, reaction temperature 60 ℃, reaction time 24 h, the yield of 1,3 - diacylglycer- ol was up to 42.61%.
出处
《中国油脂》
CAS
CSCD
北大核心
2014年第1期39-42,共4页
China Oils and Fats
基金
"十二五"国家科技重点项目(2012BAD33B02)
天津市科技支撑项目(12ZCZDNC01300)
关键词
无溶剂体系
1
3-甘油二酯
蔗糖脂肪酸酯
free - solvent system
1,3 - diacylglycerol
sucrose fatty acid esters
