Abstract
Ornithine, citrulline, arginine, γ-aminobutyric acid, glutamic acid, aspartic acid, and leucine were isolated and identified from the rhizome of Arisaema ringens SCHOTT. Serine, glycine, alanine, tyrosine, valine, and phenylalanine were identified further by two-dimensional paper chromatography.
β-Aminobutyric acid was isolated as crystals and identified as a new natural amino acid from the pinellia tuber. The tuber also yielded γ-aminobutyric acid, glutamic acid, aspartic acid, and arginine, which were isolated, and the presence of ornithine, citrulline, lysine, serine, glycine, alanine, tyrosine, valine, and leucine were identified by paper chromatography.
