Fig. 1.

RP-HPLC chromatogram of a 21 amino acid standards, b amino acid profile of R. imbricata root. 1 l-Arginine; 2 l-Aspartic Acid; 3 l-Glutamic Acid; 4 l-Serine; 5 Glycine; 6 l-Histidine; 7 l-Threonine; 8 l-Alanine; 9 l-Proline; 10 L-2-amino-n-butyric acid; 11 l-Valine; 12 l-Methionine; 13 L-Cystine HCl; 14 L-Cystine; 15 l-Isoleucine; 16 l-Leucine; 17 L-Nor Leucine; 18 l-Tryptophan; 19 l-Phenylalanine; 20 l-Ornithine; 21 l-Lysine