Some Relations between Morphology and Physiology of Aspergillus Oryzae

Abstract

The author made a number of comparative experiments with regard to the morphology and physiology of various strains of Aspergillus Oryzae. The enzymatic characteristics may be divided into two, i. e., starch decomposer and protein decomposer. There were two characteristics of the metabolic product, i. e., acid producer and pigment producer. The morphology and physiology of the starch decomposer and the acid producer were very similar. Those of the protein decomposer and pigment producer were also very similar. Thus, we were able to place the starch decomposer and the acid producer in one group which has the power to act on carbohydrates. Both the protein decomposer and the, pigment producer were classified in the other group which acts on protein and on its decomposition products. In addition, among the various strains, there were some which were between the two classes mentioned above, and there were some which had the characteristics of both groups.