Neuroactive and other free amino acids in seed and young plants of Panax ginseng
| Autor: | Fernand Lambein, Yu-Haey Kuo, Fumio Ikegami |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Arginine
Neurotoxins Panax Germination Plant Science Horticulture Plant Roots Biochemistry Ginseng Botany Food science Amino Acids Molecular Biology Chromatography High Pressure Liquid gamma-Aminobutyric Acid chemistry.chemical_classification Plants Medicinal biology Amino Acids Diamino food and beverages General Medicine biology.organism_classification Asian Ginseng Amino acid Glutamine chemistry Seeds Shoot Araliaceae |
| Zdroj: | Phytochemistry. 62:1087-1091 |
| ISSN: | 0031-9422 |
| DOI: | 10.1016/s0031-9422(02)00658-1 |
| Popis: | The seeds and one to three years old plants of Asian ginseng (Panax ginseng C.A. Meyer) were analyzed for their free amino acid contents. The neuro-excitatory beta-ODAP (beta-N-oxalyl-L-alpha,beta-diaminopropionic acid), suggested to be the cause of the crippling neurolathyrism, was the major component in the seed extract (70% of the total free amino acids detected) and showed the highest concentration (0.43% by wt) compared to that in the different parts of young plants. beta-ODAP concentration was higher in the shoots as compared to roots and declined in older plants. The amount of beta-ODAP in the roots may be considered as an indirect measure of age and quality. Another neuro-active non-protein amino acid, GABA (gamma-aminobutyric acid), increased dramatically after germination and reached highest concentration in different parts of 3 year-old plants. Glutamine and arginine were the two major free proteinogenic amino acids in the ginseng plants and together they constituted over 50% of all the free amino acids detected in the root. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect