抄録
A new amino acid ‘gigartinine’ was isolated from the red alga, Gymnogongrus flabelliformis, by means of ion-exchange resin, Dowex 50 (ammonium form). From the analytical data, color reactions, decomposition products and other evidences, it was identified as N5-(amidinocarbamoyl)-L-ornithine or L-α-amino-δ-(guanylureido) valeric acid.
