Abstract
The saccharogenic amylase fraction was prepared from a black-koji amylase system, and its debranching activity was investigated. From its different attitude towards various chemical procedures, such as (NH4)2SO4 fractionation, corn starch adsorption, and paper electrophoresis, it is suggested that two saccharogenic amylases one with and the other without debranching activity, may exist in the saccharogenic amylase fraction.