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L-Theanine

L-Theanine

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Name:L-Theanine
Synonyms:N-Ethyl-L-glutamine; L-Glutamic acid gamma-(ethylamide)
Molecular Formula:C7H14N2O3
Molecular Weight:174.20
CAS Registry Number:3081-61-6
EINECS:221-379-0
In 1950 the Tea laboratory of Kyoto successfully separated theanine from Gyokuro leaf, which has the highest theanine content among all teas. Theanine is an analog to glutamine and glutamate, and can cross the blood-brain barrier. It is sold in the US as a dietary supplement and is FDA confirmed as GRAS. The Japanese Ministry of Health and Welfare approved the use of L-theanine in 1964
Specifications:
Items
 Specifications
 
Appearance
 White crystalline powder
 
Clarity of Solution
 Conforms
 
Specific Rotation
 +7.7~+8.5.
 
Residue on Ignition
 0.2% Max
 
Heavy Metals
 10ppm Max
 
Arsenic
 1ppm Max
 
Chloride
 0.02% Max
 
PH
 5.0-6.0
 
Loss on Drying
 0.5% Max
 
Assay(By HPLC)
 99.0% Min
 
Salmonella
 Negative
 
E.coli
 Negative
 
Staphylococcus
 Negative
 
Mold & Yeast
 100cfu/g Max
 
Total Plate
 1000cfu/g Max