The structured lipids are produced through sn-1,3-specific interesterification of soybean oil with medium-chain triacylglycerol(MCT) in continuous reactions catalyzed by Thermomyces lanuginose lipase(Lipozyme TL IM).C...The structured lipids are produced through sn-1,3-specific interesterification of soybean oil with medium-chain triacylglycerol(MCT) in continuous reactions catalyzed by Thermomyces lanuginose lipase(Lipozyme TL IM).Cheap Lipozyme TL IM presents similar interesterification degree(ID), sn-1,3-specificity and residual activity as expensive Rhizomucor miehei in batch reactions. In packed-bed interesterification of soybean oil with MCT catalyzed by Lipozyme TL IM, the residence time has a significant effect on ID, while temperature has a small effect at45–70 °C. The sn-1,3-specificity of Lipozyme TL IM is not satisfactory when reaction temperature is higher than60 °C. The optimal residence time and temperature are 30–40 min and 55 °C, respectively. Among the solvents,including acetone, isopropanol, tert-butanol, and isobutanol, used to recover the activity of the used Lipozyme TL IM, acetone is the most suitable one than the other solvents.展开更多
基金Supported by the National High Technology Research and Development Program of China(2010AA101505)the National Natural Science Foundation of China(21106013)
文摘The structured lipids are produced through sn-1,3-specific interesterification of soybean oil with medium-chain triacylglycerol(MCT) in continuous reactions catalyzed by Thermomyces lanuginose lipase(Lipozyme TL IM).Cheap Lipozyme TL IM presents similar interesterification degree(ID), sn-1,3-specificity and residual activity as expensive Rhizomucor miehei in batch reactions. In packed-bed interesterification of soybean oil with MCT catalyzed by Lipozyme TL IM, the residence time has a significant effect on ID, while temperature has a small effect at45–70 °C. The sn-1,3-specificity of Lipozyme TL IM is not satisfactory when reaction temperature is higher than60 °C. The optimal residence time and temperature are 30–40 min and 55 °C, respectively. Among the solvents,including acetone, isopropanol, tert-butanol, and isobutanol, used to recover the activity of the used Lipozyme TL IM, acetone is the most suitable one than the other solvents.
