> Products > Health Ingredients > Nutrition Enhancer > L-Theanine

L-Theanine

a natural constituent in tea

Theanine is also known as L-theanine, N-ethyl-L-glutamine, with a molecular formula of C7H14N2O3. Theanine belongs to the amide compounds and is a unique amino acid in tea. It accounts for 1%-2% of the weight of dry tea. Theanine was first isolated from green tea in 1950. It is a characteristic amino acid of tea and one of the flavoring substances of tea. It is strongly positively correlated with the quality of green tea, with a correlation coefficient of 0.787~0.876. Among the more than 20 kinds of amino acids in tea, theanine accounts for about 50%~60% of the total amino acids in tea. Studies have found that except for the trace presence detected in plants such as Camellia sasanqua, mushrooms, and Camellia oleifera, it has not been found in other plants.

- CAS No.: 3081-61-6 - Purity≥98% - White Powder - Odorless - Soluble In Water - Food Grade - COA Available - Sample Freely Offered

HOT:: γ-Aminobutyric Acid Alpha GPC

Description

L-Theanine is chemically named N-ethyl-γ-L-glutamine (Cas No.: 3081-61-6), molecular formula: C7H14N2O3, and the molecular structure is as shown in the figure 1. Melting point 217~218 ℃, specific optical rotation [α] D20 = 0.7°, easily soluble in water, insoluble in ethanol and ether. L-Theanine naturally occurring in tea trees is L-Theanine, which accounts for 30% to 60% of free amino acids in tea. It is the most abundant amino acid in tea and generally accounts for 1% of the dry weight of tea. ~5%. The theanine content in some specific tea tree varieties is very high. For example, the free amino acid and theanine content in Anji white tea can reach 8.67% and 4.8% respectively.

L-Theanine has a refreshing taste. Adding it to tea drinks can improve the flavor of tea drinks. Adding theanine to cocoa drinks, barley tea, coffee, ginseng drinks, beer and other drinks can also greatly improve the flavor. , and will not affect the taste.

Research shows that L-Theanine has multiple functional activities and can protect the nervous system. Theanine can reduce brain tissue damage, inhibit brain nerve death, delay the occurrence of brain damage after ischemia, and protect nerves. It has functions in relieving stress, promoting sleep, anti-anxiety, anti-depression, and improving learning ability and memory. Good pharmacological effects. Theanine can also effectively reduce the blood pressure of hypertensive rats, but does not affect the changes in heart rate, but has no effect on rats with normal blood pressure; Theanine can relieve fatigue and effectively reduce body fat content and cholesterol content; it has obvious Anti-aging effect; can regulate immunity.

Certificate of Analysis

ITEMS	STANDARDS	RESULTS
Product Name	L- Theanine	/
Description	White or slightly yellowish graininess crystalline or powder crystalline	Conforms
Specific rotation	+7.7~+8.5°	+8.0°
Solution clarity	Clear and colorless	Conforms
Assay（%）	98.5~ 101.5	99.65
Loss on drying（%）	≤ 1.5	0.21
Residue on ignition（%）	≤0.20	0.01
PH	4.5-6.0	5.07
Particle size（%）	90% passes through 80 mesh screen	92.4
Chloride（%）	≤0.02	＜0.02
Sulfate（%）	≤0.02	＜0.02
Heavy metals（ppm）	≤ 10	＜10
Arsenic( As)（ppm）	≤1	Negative
Cadmium（ppm）	≤ 1	＜1
Total Plate Count（CFU/g）	≤ 1000	400
Yeast and Mold（CFU/g）	≤ 100	20
Coliforms	Negative	Negative
Salmonella	Negative in 25 g	Conforms
Packing:	25kg/bottles The product may be stored for 24 months in the unopened original container at room temperatur
Conclusion:	The product was inspected according to conform to the QB/T4263-2011 standard, and the results were in line with the regulations and judged to be qualified.