Research of amino acid content of Cichorium intybus L. and Urtica dioica L. by means of gas-liquid chromatography

Abstract

Content of amino acids in Cichorium intybus L. and Urtica dioica L. has been presented. Researches were carried out by means of gas-liquid chromotography. 20 amino acids were revealed in C. intybus L. аnd U. dioica L., (mg/100 g), glutamate: 32 < 2568; aspartate: 916 < 1820; alanine: 23 < 1235; proline: 38 < 962; glycine: 21 < 425; leucine: 29 < 42; isoleucine: 24 < 626 and arginine: 36 < 58. Leaves of U. dioica L. and stems of C. intybusL. contain more glycine than stems of U. dioica L. In C. intybus L. flowers contain more amino acids than leaves and stems. In U. dioica L. leaves contain more amino acids than flowers and stems. In leaves of U. dioica L. valine volume was 1.5 times higher than in C. Intybus L. Amino acids’ content in stems of C. intybus L. аnd U. dioica L. were almost identical. Leucine content in leaves and stems was in 1.5–2 times higher in C. intybus L. than in U. dioica L. The lowest cysteine volume was in leaves and stems of C. intybus L. Methionine volume was higher in U. dioica L.