Description
L-Theanine is naturally found in green tea. It can also be obtained by heating L-glutamic acid under high pressure into pyrrolidone carboxylic acid, adding anhydrous monoethylamine and heating under high pressure. L-Theanine is a unique free amino acid in tea, L-Theanine is glutamic acid γ-ethylamide, white crystalline powder, odorless, sweet and sour taste. Insoluble in alcohol and ether, soluble in water. Twenty-six amino acids (6 non-protein amino acids) were identified in tea, generally accounting for 1%-5% of the dry weight of tea, while L-Theanine accounted for more than 50% of the total free amino acids in tea.
As the characteristic non-protein amino acid with the highest content in tea, L-Theanine is safe and non-toxic and has no side effects, effectively improving sleep quality and anti-anxiety, but does not cause drowsiness, lowering blood pressure, improving brain function, promoting the brain’s learning and memory function, enhancing Immunity, anti-fatigue, enhance the efficacy of anti-tumor drugs. At the same time, L-theanine, as an alkylamine, can activate γ-T immune cells to promote cell proliferation and cytokine secretion, enhance the ability to resist tumor cells, reduce the infection of external microorganisms, and reduce the chance of the body suffering from colds and flu.
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L-Theanine COA
| Items | Specification | Test results |
| Description | White to yellowwish White crystals or crystalline powder | Conforms |
| Solution clarity | Clear and colorless | Clear and colorless |
| Assay | 98.0-102.0% | 99.9 |
| PH | 4.5-6.0 | 5.21 |
| Loss on drying,% | ≤1.0% | 0.10 |
| Residue on ignition,% | ≤0.20% | 0.08 |
| Chloride | ≤0.020% | <0.02% |
| Sulfate | ≤0.020% | <0.02% |
| Particle size | 90% through 0.18mm mesh | Conform |
| Heavy metals | ≤10ppm | <10ppm |
| Iron(Fe) | ≤30ppm | <30ppm |
| Arsenic(As) | ≤2ppm | <2ppm |
| Mercury(Hg) | ≤0.1ppm | <0.1ppm |
| Cadmium | ≤1ppm | <1ppm |
| Total Plate Count | ≤1000 CFU/g | 130 CFU/g |
| Yeast and Molds | ≤100 CFU/g | <100 CFU/g |
| Coliforms | Negative | Negative |
| Salmonella | Negative in 25g | Conforms |
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