抄録
It seems generally accepted that carbohydrates and amino acid constitute factors for pigment production in Pseudomonas aeruginosa. It was already confirmed by S. Osawa and others that a substance in onion, which is not dissolved in ether, alcohol or aceton, is not distilled at 100°C, but is destroyed after being long heated or aired and heated is effective for pigment production in Pseudomonas aeruginosa.
In the present experiments it is concluded to assume that that effective substance proves to be contained in sugar, especially glucose which onion is possesed with in a large quantity.
