Abstract
In concern of the amylase system of blackkoji mold, the following facts are described:
(1) The dextrinogenic amylase fraction has an extremely weak action on raw starch, independent of the presence or absence of maltase activity, as compared with the saccharogenic amylase fraction.
(2) The saccharogenic and dextrinogenic amylase fractions, when used combined, interact each other, to promote digestion of raw starch up to about 3-times the sum of activity of each fraction.
(3) This accelerating-interaction effect solely depends upon the “debranching activity” of saccharogenic amylase fraction.
(4) Corn, wheat and glutinous rice starches in a raw state are able to be digested to completeness with this combined system.
(5) Glutinous rice starch shows peculiar easiness in digestion either by saccharogenic amylase fraction alone or by the interacting system combined with the dextrinogenic amylase fraction.
