Method for producing fat/oil
The present invention addresses the problem of providing an effective new means for efficiently reducing the amount of diacylglycerol in a fat/oil (by conversion into triacylglycerol). Disclosed is a method for producing a fat/oil, including a step in which a lipase having a ratio of transesterification activity to hydrolysis activity of 0.007 or higher is caused to act on a diacylglycerol-containing fat/oil.
1 . A method of converting diacylglycerol in a fat/oil into triacylglycerol, comprising:
(a) determining a moisture content of the fat/oil to be 110 ppm or more, and
(b) transesterifying the diacylglycerol in the fat/oil with an immobilized lipase having a ratio of transesterification activity to hydrolysis activity of 0020 or more.
2 . The method according to claim 1 , wherein a moisture content of the diacylglycerol-containing fat/oil is 110 ppm or more.
3 . The method according to claim 1 , wherein the ratio is 0.020 or more.
4 . The method according to claim 2 , wherein the moisture content is 1000 ppm or less.
5 . A method of converting diacylglycerol in a fat/oil into triacylglycerol, comprising:
(a) determining a moisture content of the fat/oil to be less than 110 ppm, and
(b) transesterifying the diacylglycerol in the fat/oil with an immobilized lipase having a ratio of transesterification activity to hydrolysis activity of 0.001 or more.