公开(公告)号：US5288619A

公开(公告)日：1994-02-22

申请号：US897255

申请日：1992-06-11

申请人： Peter H. Brown ,  Federico D. Carvallo ,  Robert C. Dinwoodie ,  Michael T. Dueber ,  David K. Hayashi ,  R. G. Krishnamurthy ,  Zohar M. Merchant ,  James J. Myrick ,  Richard S. Silver ,  Chrisanthus Thomas

发明人： Peter H. Brown ,  Federico D. Carvallo ,  Robert C. Dinwoodie ,  Michael T. Dueber ,  David K. Hayashi ,  R. G. Krishnamurthy ,  Zohar M. Merchant ,  James J. Myrick ,  Richard S. Silver ,  Chrisanthus Thomas

IPC分类号： A23D9/00 ,  C11C3/08 ,  C11C3/10 ,  C11C3/12 ,  C12P7/64 ,  A23D7/00 ,  C12P7/58

CPC分类号： C12P7/6454 ,  A23D9/00 ,  C11C3/08 ,  C11C3/10 ,  C11C3/12 ,  C12P7/6472 ,  Y02P20/544

摘要： An enzymatic transesterification method for preparing a margarine oil having both low trans- acid and low intermediate chain fatty acid content is disclosed. The method includes the steps of providing a transesterification reaction mixture containing a stearic acid source material and an edible liquid vegetable oil, transesterifying the stearic acid source material and the vegetable oil using a 1-, 3-positionally specific lipase, and then finally hydrogenating the fatty acid mixture to provide a recycle stearic acid source material for a recyclic reaction with the vegetable oil. Also described is a counter-current method for preparing a transesterified oil. The method includes the steps of providing a transesterification reaction zone containing a 1-, 3-positionally specific lipase, introducing a vegetable oil into the transesterification zone, introducing a stearic acid source material, conducting a supercritical gas or subcritical liquified gas counter-current fluid, carrying out a transesterification reaction of the triglyceride stream with the stearic acid or stearic acid monoester stream in the reaction zone, withdrawing a transesterified triglyceride margarine oil stream, withdrawing a counter-current fluid phase, hydrogenating the transesterified stearic acid or stearic acid monoester to provide a hydrogenated recycle stearic acid source material, and introducing the hydrogenated recycle stearic acid source material into the reaction zone.

摘要翻译： 公开了一种用于制备具有低转基因和低中链脂肪酸含量的人造黄油的酶促酯交换方法。 该方法包括以下步骤：提供含有硬脂酸源材料和可食用液体植物油的酯交换反应混合物，使用1-，3-位特异性脂肪酶将硬脂酸源材料和植物油进行酯交换，然后最终将 脂肪酸混合物以提供用于与植物油循环反应的循环硬脂酸源材料。 还描述了制备酯交换油的逆流方法。 该方法包括以下步骤：提供含有1-位3位特异性脂肪酶的酯交换反应区，将植物油引入酯交换区，引入硬脂酸源材料，导入超临界气体或亚临界液化气逆流流体 在反应区域中进行甘油三酯物流与硬脂酸或硬脂酸单酯物流的酯交换反应，取出酯交换甘油三酯人造黄油油流，取出逆流流体相，将酯交换的硬脂酸或硬脂酸单酯氢化为 提供氢化循环硬脂酸源材料，并将氢化的再循环硬脂酸源材料引入反应区。