抄録
The free amino acids contents in the liver, kidney and brain of several animal families were examined by two dimentional paper chromatogram. The test animals were bull, pig and dog, as the mammalia, snake and tortoise as the reptiles, crucian carp and tuna as the fish. It was recognized that there is the peculiar relation of free amino acids between differential families. The quantities of aspartic acid, glutamic acid, serine and glycine in the brain of cold-blooded animal are low compared with those in warmblooded animal, on the otherhand γ-aminobutyric acid is similar. The free amino acids in the viscera of reptiles are low generally. In the fishes, they are higher than those in the reptiles, and especially serine, glycine, alanine, valine+methionine and leucine+isoleucine in the fish liver are higher than thos ein the mammalia. The contents of valine+methionine and leucine+isoleucine in the tuna is comparatively high value. In the fish kidney, the contents of serine, glycine, alanine, valine+methionine and leucine+isoleucine are comparatively high also.
