Bardanae fructusBardanae fructusBardanae fructus Bardanae fructusBardanae fructusBardanae fructus[Problem] The objective of the present invention is to provide: a extract containing arctigenin and arctiin at a set proportion and a method for producing the extract. More specifically the objective of the present invention is to provide a method for producing a extract containing arctigenin and arctiin at a weight ratio of approximately 1:1. [Solution] The method for producing a extract containing arctigenin and arctiin at an arctigenin/arctiin weight ratio of 0.7 1.3 includes: a step for cutting up the and a step for enzymatically converting arctiin contained in the to arctigenin by means of glucosidase contained in the the enzymatic conversion causing a reaction at a temperature of 20 50�C. The method further contains a step for extracting an extract containing arctigenin and arctiin by means of adding an organic solvent and refluxing.
