L-Theanine powder is extracted from green tea leaves or synthesized artificially. It has several potential health benefits on the mind and body. L-theanine is available as a dietary supplement.

Theanine is a characteristic amino acid in tea, synthesized by glutamic acid and ethylamine under the action of theanine synthase in the roots of tea trees.

 It is an important substance in forming the taste of tea, mainly manifested as fresh and sweet, and is the main component of tea that produces saliva and moistens sweetness. 

26 amino acids (6 non protein amino acids) have been identified in tea, generally accounting for 1% to 5% of the dry weight of tea, while theanine accounts for more than 50% of the total free amino acids in tea.

As the characteristic non protein amino acid with the highest content in tea, theanine is safe and non-toxic with various biological activities such as antioxidant, immune regulation, anti-aging, and antagonizing the cell excitatory toxicity caused by excessive glutamate.

Also, L-theanine, as an alkylamine, can activate γ- T immune cells promote cell proliferation and cytokine secretion, enhance the ability to resist tumor cells, and reduce external microbial infections, reducing the likelihood of the body contracting colds and influenza.

Application

The sedative effect when added to food, the flavor improvement effect of L-theanine, enhancing immunity, lowering blood pressure, improving brain function, promoting learning and memory function, and effectively enhancing liver detoxification function. The antihypertensive effect of L-theanine