Basic Information

Theanine powder, also named N-ethyl-glutamine, with CAS number of 3081-61-6 and formula of C7H14N2O3, is a amide compound in white or off-white powder with melting point of 214-215℃, is easily dissolved in water, and has an incense of burned sugar and a taste of monosodium glutamate.

Basic information

Theanine powderin nature only exists in tea plants accounting of 1%～2% of dry tea in free state, and is the main amino acid in tea accounting of some 50% of free amino acids. It is essential to human body, which can not synthesize and shall be supplied externally.

Physiological Active

Lowering blood pressure: Adjustment of blood pressure mainly relies on catecholamine(CA)and5-hydroxytryptamine (5-HT), and L-theanine may lower the level of 5-hydroxytryptamine (5-HT). Rat experimentshave demonstrated that it may obviously lower blood pressure; the higher the dose, more obvious the lowering effect. However, rats with normal blood pressure do not have any lowering effect of blood pressure, which has demonstrated that it may only have lowering impact of blood pressure on rats with high blood pressure.

Sedation: It is well known that tea contains caffeine having excitation, but human being during tea drinking feels relaxation, sedation, and at ease. It has been proved that it is due to the action of it.

Improvement on Learning Capability: it has outstanding impact on release or reduction of such neurotransmitters as dopamine and 5-hydroxytryptamine (5-HT), which are closely relevant to memory and learning capability, and it has demonstrated that it has impact on memory and learning capability. Japanese research has showed that it feeding to rats is adsorbed by intestinal tract and transferred to liver an brain by blood, and after it enters the brain it increases dopamine, the neurotransmitter in brain mitochondria, which is the precursor of adrenalin and noradrenalin, and plays an important role in exciting neuron in brain. Animal experiments have showed that it has positive impact on memory and learning capability.

Relaxation: In general, cerebral cortex of animals and human being may produce weak brain waves, which may classified as α, β, δ, and θ waves in accordance with its frequency, and each wave is connected to a certain spiritual state and α wave is relevant to relaxation. Some experiments have showed that, forty minutes after absorption of it, α wave has been evidently detected in the brain surface, which shows that it may accelerate the generation of α wave and induce human being into relaxation.

2. Application in Food

May be used as food additive and used in such products as beverage, biscuits, candy, ice cream, crystal sugar etc.

3. Medical Application

Dr. Bukowski and its team from Harvard Medical School recently published a research paper on Proceedings of national Academy of s, which says that it obtained form such teas as green tea, Wu-lung tea may enhance immune system capability to resist attack from germ, viruses, and epiphyte. The team conducted experiment on volunteers, which has demonstrated that it may increase human resistance from contagious diseases by five times, and effectively prevent disease-causing microorganism from invasion.

Theaninepowder may improve learning capability and memory of brain, have preventive effects against parkinson disease, climacteric syndrome, senile dementia, neuro-malfunction disease, have an effect of cardiac diuretic and hemangiectasis, and is beneficial to prevent hepatic coma, dysmnesia, and hypophrenia.