Many patents are available claiming the process for Diglyceride or Diacylglycerol (DAG) oil production
through chemical and enzymatic approaches. The methods are esterification, glyceroloysis, hydrolysis, interesterification,
and transesterification. Almost all the reactions used edible oil as a starting material. Majority of the inventors have
patented their research for DAG production in relation with certain products such as margarine, mayonnaise, shortening,
Omega-3 and others. This present review describes a selection of recent patents of DAG production and its applications.