申请人:Enzymotec Ltd.
公开号:US07034168B2
公开(公告)日:2006-04-25
A new enzymatic process for preparing 1,2-diacylated phospholipids using an enzyme preparation possessing phospholipase activity towards acylation at the sn-1 and sn-2 sites in a microaqueous reaction system. More particularly, the 1,2-diacyl-phospholipids produced according to the esterification/transesterification process are obtainable in high yield and purity and carry identical desired carboxylic acid, preferably fatty acid, acyl groups at the sn-1 and sn-2 positions. The process involves esterification/transesterification (acylation) of a glycerophospholipid, preferably glycerophosphoryl choline (GPC) with a desired carboxylic acid, preferably fatty acid, or their derivatives in the presence of the above mentioned appropriate enzyme preparation. The process of the invention further relates to a process for the production of 1-acyl-2-lyso-glycerophospholipid, preferably 2-lyso-PC by reacting glycerophospholipid, preferably glycerophosphoryl choline (GPC) with a desired carboxylic acid, preferably fatty acid, or their derivatives in the presence of a sn-1 specific phospholipase (PLA1 or PLA1,2) and a solvent, in a microaqueous medium.
一种新的酶法制备1,2-二酰基磷脂的方法,使用一种具有磷脂酶活性的酶制剂,在微水反应体系中对sn-1和sn-2位点进行酰化。更具体地说,根据酯化/转酯化过程生产的1,2-二酰基磷脂可以高产高纯,并在sn-1和sn-2位置携带相同的所需羧酸,优选为脂肪酸,酰基。该过程涉及在上述适当的酶制剂的存在下,将甘油磷脂,优选为甘油磷酸胆碱(GPC),与所需的羧酸,优选为脂肪酸或其衍生物进行酯化/转酯化(酰化)的过程。本发明进一步涉及一种生产1-酰基-2-溶血磷脂,优选为2-溶血磷脂酰基胆碱(2-lyso-PC)的方法,通过在微水介质中,在溶剂的存在下,将甘油磷脂,优选为甘油磷酸胆碱(GPC),与所需的羧酸,优选为脂肪酸或其衍生物,在sn-1特异性磷脂酶(PLA1或PLA1,2)的存在下反应。