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    • 8. 发明申请
    • METHOD FOR PRODUCING ALKYL LACTATE DIRECTLY FROM AMMONIUM LACTATE
    • 从乳酸杆菌直接生产牛皮癣的方法
    • WO2011040700A2
    • 2011-04-07
    • PCT/KR2010005137
    • 2010-08-05
    • KOREA RES INST CHEM TECHCHANG JONG SANHWANG DONG WONLEE JUNG HOHWANG YOUNG KYU
    • CHANG JONG SANHWANG DONG WONLEE JUNG HOHWANG YOUNG KYU
    • C12P7/56C12P41/00
    • C07C67/08C07C69/68
    • The present invention relates to a method for producing alkyl lactate directly from ammonium lactate generated in a fermentation process. In detail, the present invention relates to a method for producing alkyl lactate directly from ammonium lactate, comprising a first step of producing a mixture comprising an aqueous solution of ammonium lactate generated in a fermentation process and trialkyl phosphate-based organic solvent extractants, and heating the mixture to prepare lactic acid; and a second step of performing an esterification reaction between the lactic acid prepared in the first step and alcohol to prepare alkyl lactate. According to the method of the present invention, a pretreatment process such as the addition of sulfuric acid required for preparing lactic acid is eliminated, and an esterification reaction between lactic acid and alcohol is performed simultaneously with the preparation of lactic acid in order to produce alkyl lactate, thereby producing alkyl lactate in an easier manner than conventional processes for producing alkyl lactate from lactate salts generated in a fermentation process, and, during an esterification reaction with lactic acid, effectively separating, from lactic acid or alkyl lactate contained in an organic solvent, water to be derived as a by-product, such that the reaction speed and yield rate can be improved and high-efficiency and high-purity alkyl lactate can be produced.
    • 本发明涉及在发酵过程中直接由乳酸铵生产乳酸烷基酯的方法。 详细地说,本发明涉及直接由乳酸铵生产乳酸烷基酯的方法,该方法包括:制备包含发酵过程产生的乳酸铵水溶液和磷酸三烷基酯类有机溶剂萃取剂的混合物的第一步骤,以及加热 混合物制备乳酸; 以及在第一步中制备的乳酸和醇之间进行酯化反应以制备乳酸烷基酯的第二步骤。 根据本发明的方法,除去了制备乳酸所需的添加硫酸等的预处理方法,同时在制备乳酸的同时进行乳酸和醇之间的酯化反应,以制备出烷基 乳酸盐,从而比在发酵过程中产生的乳酸盐生产烷基酯的常规方法更容易地制备乳酸盐,并且在与乳酸的酯化反应期间,有效地从包含在有机溶剂中的乳酸或乳酸烷基酯中分离出来 作为副产物得到的水,从而可以提高反应速度和产率,并且可以生产高效率和高纯度的乳酸烷基酯。