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What are the auxiliary effects of theanine on the human body
Mar 07, 2018

CAS number: 3081-61-6.

Also known as glutamine, the English name is l-theanine Cas No.:3081-61-6 molecular formula :C7H14N2O3 quality standard :JP2000 content :99% Min. Appearance: white or white powder. Melting point: 202-215 ℃ pH value: 5.0 to 6.5

Source: microbial fermentation or chemical synthesis.

Content: greater than 99 (%)

Than the polarimetric [alpha] 20 d: + 8.0 ° - + 8.5 °

The pH of 1% solution: 5.0-6.0.

Dry weight loss (100 ℃, 3 h) : 0.5% or less

Heavy metal: no more than 5 (PPM)

Chloride (in Cl) : less than 0.03%.


L-theanine is a free amino acid in tea, and Theanine is glutamate, which has a sweet taste. The content of theanine varies with the variety and location of tea.

Theanine is the most abundant amino acid in tea, accounting for more than 50% of the total free amino acid, accounting for 1% to 2% of the dry weight of tea. Theanine is white acicular body, easy to dissolve in water. Sweet and fresh taste is the component of tea taste. Japanese people often use shade to improve the content of theanine in tea, to enhance the fresh taste of tea.

In other experiments, Yokogoshi et al. confirmed that the use of theanine could directly affect the activity of 5-hydroxytryptamine in the brain associated with learning and memory.


(1) absorption and metabolism.

Oral theanine is absorbed into the human body and is absorbed into the blood through the brush of the intestinal tract. It is distributed through the blood circulation to the tissues and organs, and the part is expelled from the urine after the kidney is broken down. Is absorbed into the blood and liver of theanine concentrations decrease after 1 hour, in the brains of theanine in small five days to reach the highest, after 24 hours after the body of theanine were gone, in the form of urine.

(2) regulate the changes of the neurotransmitters in the brain.

Theanine affects the metabolism and release of neurotransmitters such as dopamine in the brain, which can be regulated or prevented by these neurotransmitters.

(3) improve learning ability and memory.

(4) sedation.

Caffeine is known as a stimulant, but people feel relaxed, calm and relaxed when drinking tea. It has been confirmed that this is mainly the role of theanine.

(5) improving menstrual syndrome.

Most women have menstrual syndrome. The sedative effect of theanine has led to the idea that it has an improved effect on menstrual syndrome, and clinical trials of women have proved its effect.

(6) protect nerve cells.

Theanine can inhibit the death of nerve cells caused by transient ischemia, and has protective effect on nerve cells.

(7) lowering blood pressure.

Theanine may be used to lower blood pressure by regulating the concentration of nerves in the brain. The effect of theanine in reducing high blood pressure can also be seen as a stabilizing effect. This stability will undoubtedly help the recovery of physical and mental fatigue.

(8) enhancing the efficacy of anticancer drugs.

Theanine itself has no antitumor activity, but it can improve the activity of various antitumor drugs. Theanine and antineoplastic drugs and theanine could prevent antitumor drugs from tumor cells, enhance the anti-cancer effect of antitumor medicine.Theanine has to inhibit the action of the cancer cells infiltration, cancer cells infiltration is the necessary way to cancer cells to spread.