The Study of Amino Acid Content of Glycyrrhiza Glabra Overground and Underground Parts

Abstract

The purpose of the research was a comparative study of the amino acid composition and the quantitative content of individual amino acids in the over-ground and underground parts of Glycyrrhiza glabra L. (Fabaceae) growing in the Volgograd region. Previously, using the reaction with ninhydrin, as well as carrying out TLC on the plates «Silufol», the presence of amino acids in watery extracts from the samples of vegetable raw materials was established. On an AAA 400 amino acid analyzer in the underground and over-ground parts of Glycyrrhiza glabra L. 16 amino acids were identified, 9 of which are interchangeable and 7 are irreplaceable, their quantitative content and accumulation characteristics were established. The total amount of amino acids found in the over-ground parts of the medicinal plant is higher (15.88%) than in the underground organs – 8.42%. Of the individual amino acids, glutamic acid (1.84±0.02%), aspartic acid (1.74±0.02%), arginine (1.03±0.01%), leucine (1.41±0.01%), lysine (1.02±0.01), valine (0.92±0.01%), phenylalanine (0.86±0.01%), isoleucine (0.76±0.01%), threonine (0.77±0.01%) was detected. In the underground organs of the studied plant, aspartic (1.17±0.02%) and glutamic (0.62±0.01%) acids predominantly accumulate, but in percentage they are 1.5–3 times less than the over-ground parts. Separately, it should be noted a feature of the accumulation of proline, which is one of the dominant amino acids in the over-ground and underground parts of Glycyrrhiza glabra L. (1.49±0.02% and 1.87±0.02%, respectively). Obtained in the course of the research data indicate the prospects for further study of the over-ground parts of the medicinal as a source of this group of biologically active substances.

The efficacy of licorice root extract on meat amino acid, fatty acid, vitamin, and mineral composition and productivity of quail

“…Histidine and cysteine are also considered indispensable in infants. Nedil’ko and Yanitskaya [ 58 ] reported the biological value of licorice grass and a broad spectrum of pharmacological activity associated with its relatively high amino acid content. These findings are consistent with those of Bazekin et al .…”

“…Histidine and cysteine are also considered indispensable in infants. Nedil'ko and Yanitskaya [58] reported the biological value of licorice grass and a broad spectrum of pharmacological activity associated with its relatively high amino acid content. These findings are consistent with those of Bazekin et al [59] and Fu et al [60], who demonstrated that licorice root extract has a favorable influence on the chemical and amino acid composition of the meat.…”

Comparative Study of Free Amino Acid Profiles in Underground Organs of Several Species of the Genus Rumex During Different Phases of the Vegetation Cycle

“…Numerous studies report on the content of amino acids in representatives of such families as Nettle (Urticaceae) [12,13], Oleaster (Elaeagnaceae) [14], Leguminosae (Fabaceae) [15,16], and others [17,18]. It has been proven that amino acids are capable of accumulating both in aboveground plant organs and in underground ones.…”