PROBLEM TO BE SOLVED: To provide a method for easily and inexpensively producing transesterified fat-and-oil, in which the content of dialkyl ketones (DAKs) is extremely reduced.SOLUTION: The method for producing the transesterified fat-and-oil in which the content of dialkyl ketones (DAKs) is reduced includes a step of carrying out cleaning after a reaction liquid containing fat-and-oil and an alkali catalyst, and an acidic substance are mixed and the esterification is stopped. In a preferred embodiment, the use amount of the acidic substance is ≤10 pts.wt based on 100 pts.wt of the fat-and-oil.COPYRIGHT: (C)2013,JPO&INPIT【課題】ジアルキルケトン類(Dialkylketones;DAKs)の含量が極めて低減されたエステル交換油脂を容易かつ安価に得ることができるエステル交換油脂の製造方法を提供すること。【解決手段】油脂とアルカリ触媒を含む反応液と、酸性物質と、を混合してエステル交換反応を停止させた後、洗浄を行う工程を含む、ジアルキルケトン類の含有量が低減されたエステル交換油脂の製造方法。好ましい態様では、前記酸性物質の使用量が、油脂100重量部に対して10重量部以下である。【選択図】なし
