发明名称 |
Enzymatic method for preparing transesterified oils |
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.
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申请公布号 |
US5288619(A) |
申请公布日期 |
1994.02.22 |
申请号 |
US19920897255 |
申请日期 |
1992.06.11 |
申请人 |
KRAFT GENERAL FOODS, INC. |
发明人 |
BROWN, PETER H.;CARVALLO, FEDERICO D.;DINWOODIE, ROBERT C.;DUEBER, MICHAEL T.;HAYASHI, DAVID K.;KRISHNAMURTHY, R. G.;MERCHANT, ZOHAR M.;MYRICK, JAMES J.;SILVER, RICHARD S.;THOMAS, CHRISANTHUS |
分类号 |
A23D9/00;C11C3/08;C11C3/10;C11C3/12;C12P7/64;(IPC1-7):C12P7/64;C12P7/58;A23D7/00 |
主分类号 |
A23D9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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