Tea Ingredients | Theanine

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Theanine is a type amino acid that has effects such as stress-relief and improvement of blood flow.

In this page, we are going to introduce the basic knowledge, detailed effects and tips for effective ingestion of theanine.

Hope this article will encourage you to drink tea for your health.

What is theanine?

Theanine is a type of amino acid contained in tea. This may surprise you but, tea contains amino acids below;

  • Gultamine acid
  • Arginie
  • Asparagines acid
  • Theanin
  • Other

Particularly, theanine is the most contained amino acid that is about 50% of all types of amino acids in tea.

Theanine attributes sweetness and umami in tea.

Theanine is a unique ingredient of tea that attributes sweetness and umami.

As it is not contained in coffee or cocoa, tea is the only one that can taste refreshing sweetness and umami of Theanine.

Thenine was discovered by Japanese.

Theanine is an ingredient discovered in Gyokuro by Yajiro Sakato in 1950.

In fact, theanine is named after tea: It was named after the old scientific name of tea “thea sinensis”.

Effects of theanine

Theanine, a component unique to tea, has the following benefits

Relaxing effect

Theanine has an effect that releases alpha waves in brain.

“Alpha wave” may not sound familiar, but it is simply described as a brain wave that is released when relaxed.

When alpha waves are released in brain, these effects can be expected;

  • Increase in memory
  • Increase in concentration
  • Tension-relief and improvement of blood flow
  • Stress-relief

Because of its many benefits, supplements extracted from theanine are sold overseas, and its health benefits are effective for relaxation and concentration.

Inhibits the stimulant effect of caffeine

Tea contains caffeine, which has stimulant effects. Normally, tea has strong stimulant effects like coffee, but such excitement is not actually felt, but only a very mild stimulant effect. This is because theanine inhibits the stimulant effect of caffeine.

This makes the stimulant effect obtained from caffeine milder and allows the mild excitement to last.

How to ingest theanine in tea

Theanine tends to be found in higher-grade teas, especially Kabusecha, Gyokuro, and Matcha. This is because theanine is produced by covered cultivation, which suppresses the production of catechins from theanine.

It is also found in higher amounts in first-picked teas than in second and third-picked teas, and is more abundant in young, tender buds of first-picked teas. The most theanine is contained in tea picked at the best time among the first teas.

Therefore, if you want to “take in a good amount of theanine,” please choose a tea that is a little higher in quality than usual.

In addition, brewing tea with ice water or low-temperature water reduces the elution of caffeine, which has stimulant effects.

Therefore, you will be able to feel the relaxing effect of theanine and its delicious flavor more clearly than when brewed at a higher temperature.