Theanine
Introduction
Theanine (L-Theanine) is a unique free amino acid in tea, and theanine is glutamic acid γ-ethylamide. Theanine content varies with the variety and location of tea. Theanine accounts for 1% to 2% of the dry tea. Theanine is a white needle, soluble in water. With sweet and refreshing taste, is the taste of tea components.
Specification
| Item | Standard | Analysis data |
| Appearance |
White crystalline powder |
Conforms |
| Specificrotation(a)D20(C=1,H2O) |
+7.5º to +8.5º |
+8.09º |
| Solubility | Freely soluble in water, insoluble in EtOH | Conforms |
| Assay |
98.0-102.0% |
98.46% |
| Melting Point (ºC) |
200ºC to 210 ºC |
202.1ºC |
| Chloride(C1) |
Not more than 0.02% |
<0.02% |
| Iron(Fe) |
Not more than 10ppm |
<10ppm |
| Heavy metals(Pb) |
Not more than 10ppm |
<10ppm |
| Arsenic(As2O3) |
Not more than 4ppm |
<4ppm |
| Loss on drying |
Not more than 1.0% |
0.25% |
| Residue on ignition |
Not more than 0.2% |
0.08% |
| Total Plate Count |
Not more than 1000cfu/g |
Conforms |
| Yeat& mould |
Not more than 100cfu/g |
Conforms |
| Ethyl alcohol |
Not more than 3000ppm |
Conforms |
| E.Coli | Negative | Negative |
| Salmonella | Negative | Negative |
| PH | 5.0-6.0 | 5.64 |
| Mesh Size |
90% through 60mesh |
90% through 60mesh |
Application
1.Theanine will reduce blood pressure, blood sugar, blood lipids. 2.Theanine powder with the function of removing radicals and anti-aging. 3.Theanine can enhance the immune function and prevention of colds. 4.Theanine will anti-radiation,anti-cancer, inhibiting the increasing of cancer cell.
