Customization: | Available |
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Certification: | ISO, FDA |
Assay Method: | HPLC, UV, Gc |
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English name | L-theanine |
Latin Name | Gamellia sinensis O.Ktze |
CAS No | 3081-61-6 |
Molecular forula | C22H18O11 |
Molecular Weight | 458.3717 |
Green Tea Extract Specification | 1.Total tea polyphenols: 60%- 98% 2. Total tea catechins: 40%- 90% 3. EGCG: > 20%-70% 4.L-Theanine |
Use Part | Leaves |
Appearance | brown to reddish brown powder |
Mesh size | 100% pass 80 Mesh |
Assay | 98.0~102.0% |
PH | 5.0~6.0 |
Specific rotation | +7.7°~+8.5° |
State of solution (Transmittanc e T430) |
clear & colorless ≥98.0% |
Chloride(Cl) | 19.89~20.29% |
Identification by IR | Authenic |
Melting point | 200.0-210.0ºC |
Ammonium(NH4) | ≤0.02% |
Sulfate(SO4) | ≤0.02% |
Iron(Fe) | ≤10ppm |
Heavy metals(Pb) | ≤10ppm |
Arsenic(As) | ≤1ppm |
Other amino acids | conforms |
Loss on drying | 8.5~12.0% |
Residue on ignition | ≤0.10% |