Disclosed is a method of preparing alkyl butyrate, which comprises: (a) producing a fermented liquid containing butyrate salt through a fermentation process using butyric acid-producing strains; (b) obtaining an extracted liquid containing butyric acid from a continuous extracting apparatus using an extraction solvent, after converting the butyrate salt into butyric acid by adding an inorganic acid except for carbonic acid or carbon dioxide into the fermented liquid, wherein the continuous extracting apparatus includes a plurality of extraction plates which are installed inside an extraction column and perform a reciprocating motion vertically, and the broth and the extraction solvent are supplied to upper and lower portions of the column, respectively; and (c) reacting the extracted liquid and alcohol having a carbon number of 4 or less or a mixture thereof in an esterification reactor to convert a resultant product into alkyl butyrate. According to the present invention, butyric acid existing in microbic culture fluid can be efficiently extracted, and furthermore, competitively priced alkyl butyrate can be prepared without an additional process of separating the extracted solvent while minimizing energy consumption.
公开了一种制备
丁酸烷基酯的方法,该方法包括(a) 利用
丁酸生产菌株,通过发酵工艺生产含有
丁酸盐的发酵液;(b) 在发酵液中加入
碳酸或
二氧化碳以外的
无机酸将
丁酸盐转化为
丁酸后,使用萃取溶剂从连续萃取装置中获得含有
丁酸的萃取液,其中连续萃取装置包括多个萃取板,这些萃取板安装在萃取柱内并垂直做往复运动,肉汤和萃取溶剂分别供给萃取柱的上部和下部;(c) 在酯化反应器中,将提取液与碳原子数为 4 或 4 以下的醇或其混合物进行反 应,将生成物转化为
丁酸烷基酯。根据本发明,可以有效地提取微
生物培养液中的
丁酸,此外,还可以制备价格具有竞争力的
丁酸烷基酯,而无需分离提取溶剂的额外过程,同时最大限度地减少能源消耗。