抄録
Isolation and some properties of a new acidic amino acid, named quisqualic acid, along with arginine, trigonelline and γ-amino butyric acid from Quisqualis Fructus (Japanese name "Shikunshi") are described. Also, aspartic acid, glutamic acid, serine, glycine, proline, leucine, valine, alanine, threonine, asparagine, histidine, and lysine were detected by paper chromatography and paper electrophoresis.