L-Theanine

Made from leaves that have not been oxidized.

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by Ed » Jan 1st 09 9:48 pm

But only the green varieties are worth drinking :)

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Re: L-theanine in all tea?

by pb2q » Jan 2nd 09 12:44 am

Katmandu wrote:So is the concensus that all teas in loose form black, oolong,green and white all contain some theanine?
The following information is lifted from a publication titled Green Tea and Human Health, page 30. It's a pamphlet that was written by Dr. Itaro Oguni, Prof. of Food Science, Dept. of Food and Nutritional Sciences, University of Shizuoka, Hamamatsu College. This pamphlet came to me recently via a Den's tea order. No references are cited for this particular information.

Theanine in Dry Leaves (mg/100g)
  • Gyokuro High Quality: 2650
    Gyokuro Medium Quality: 1480
    Gyokuro Low Quality: 1340

    Sencha Premium Quality: 1980
    Sencha High Quality: 1280
    Sencha Medium Quality: 1210
    Sencha Low Quality: 612

    Bancha: -
    Hojicha: -

    Matcha High Quality: 2260
    Matcha Medium Quality: 1790
    Matcha Low Quality: 1170

    Chinese White Tea: 838
    Chinese Yellow Tea: 1580
    Chinese Oolong Tea: 588
    Chinese Pu-er Tea: 8
Theanine was discussed in this section recently: http://www.teachat.com/viewtopic.php?t=6449

Here's another good discussion from last summer: http://www.teachat.com/viewtopic.php?t=5575

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by inspectoring » Jan 2nd 09 3:22 am

just be careful. when taken in high doses - it has been known to cause liver toxicity. There is also an issue of polyphenol toxicity.

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by jumpin jester » Jan 2nd 09 7:04 am

murrius wrote:I love this thread! It refuses to die. You have to admire the sheer tenacity of a thread like this one. The staying power..... the determination....

Brain chemistry and tea. What a combo! I'm suprised that this thread hasn't brought out our chemistry enthusiasts. I remember being quite struck by the mood altering effect of green tea when I first started to drink it. Now I notice it less. Probably because my baseline mind/body is now more in line with the state of mind that drinking tea helped to produce in the first place. It's official - I have tea brain.
Ugh, the woes of being a tea head, eh murrius? lol

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by murrius » Jan 2nd 09 7:55 pm

jumpin jester wrote:
Ugh, the woes of being a tea head, eh murrius? lol
Yes, it's hard work sometimes but it has many rewards. :D

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by Love4TheLeaf » Jan 14th 09 5:22 pm

jumpin jester wrote: tea head
:)

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by murrius » Jan 15th 09 5:00 am

Yay! The immortal theanine thread is back....

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Re: L-Theanine

by hop_goblin » Jan 15th 09 1:53 pm

Caletara wrote:I read that green and white tea contain L-theanine, which acts has a calming effect on the body. Does anyone know anything more about this, or if all green teas or Adagio teas contain this?
ALL teas Black, white, green, yellow, red etc contain the magic ingredient.

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Re: L-Theanine

by riccaicedo » Sep 17th 12 2:47 am

The reason gyokuro and matcha have the highest concentration of L-theanine is the shaded cultivation process. Sunlight helps to turn L-theanine into catechins.

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Re: L-Theanine

by edkrueger » Sep 17th 12 8:39 pm

this is an over 6 year old thread...

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Re: L-Theanine

by Teacup1980 » Sep 29th 12 12:35 am

L-theanine, one of amino acid, is high in the shade-grown teas such as Matcha & Gyokuro. L-theanine is "umami" or savory taste and this is why Matcha and Gyokuro have unique sweet taste.

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Re: L-Theanine

by edkrueger » Sep 29th 12 12:55 am

this is still an over 6 year old thread...

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Re: L-Theanine

by TIM » Sep 29th 12 2:49 am


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Re: L-Theanine

by riccaicedo » Oct 1st 12 3:42 am

?