Abstract
It is desirable to utilize the chlorella not only for a resource of food protein but also for the resources of pigments such as chlorophyll, carotene, and of others.
For this purpose, the butanol treatment was the most available technique, by this, proteins, pigments, and the other soluble materials were isolated simultaneously. The treatments such as the grinding with sand, freezing with liquid air, and autolysis with toluol could raise the yield of extractable nitrogenous materials.
