Indigo plant extract powder and its manufacturing method and its indigo grass extract powder application

Low hygroscopicity, excellent in fluidity, and an object thereof is to provide a method of manufacturing the high indigo grass extract powder storage stability and as well as compositions obtained by blending the indigo grass extract-containing powder, on a dry solid basis for indigo grass extract 1 part by weight of the indigo plant extract, the dextrose the Equivalent 10.2 following partial starch hydrolyzate on a dry solid basis, dried the additional inclusion than 5 parts by mass or more 0.25 part by weight the method of manufacturing indigo grass extract powder, solved by providing a composition prepared by blending indigo grass extract powder and indigo grass extract powder produced by the production method.