enhance immunity
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L-Theanine CAS 3081-61-6
Theanine is an amino acid only contained in tea, tea theanine content of the most. L-theanine is synthesized in the root of the tea plant and transferred to the leaves by the branches. The l-theanine is converted into catechin in the leaves under sunlight, in general, the content of crude tea is less, but the content of polyphenols is higher.
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