• L-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.

CAS No 3081-61-6
Shelf Life 2 Years
EINECS No 221-379-0
Molecular Formula C7H14N2O3
Items Standards Results
Physical Analysis    
Description White Powder Complies
Assay 99% 99.21%
Mesh Size 100 % pass 80 mesh Complies
Ash  5.0% 2.85%
Loss on Drying  5.0% 2.65%
Chemical Analysis    
Heavy Metal  10.0 mg/kg Complies
Pb  2.0 mg/kg Complies
As  1.0 mg/kg Complies
Hg  0.1mg/kg Complies
Microbiological Analysis    
Residue of Pesticide Negative Negative
Total Plate Count  1000cfu/g Complies
Yeast&Mold  100cfu/g Complies
E.coil Negative Negative
Salmonella Negative Negative