L-Theanine


Made from leaves that have not been oxidized.

Postby Ed » Jan 1st, '09, 17:48

But only the green varieties are worth drinking :)
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Re: L-theanine in all tea?

Postby pb2q » Jan 1st, '09, 20:44

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: viewtopic.php?t=6449

Here's another good discussion from last summer: viewtopic.php?t=5575
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Postby inspectoring » Jan 1st, '09, 23:22

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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Postby jumpin jester » Jan 2nd, '09, 03:04

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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Postby murrius » Jan 2nd, '09, 15:55

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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Postby Love4TheLeaf » Jan 14th, '09, 13:22

jumpin jester wrote: tea head


:)
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Postby murrius » Jan 15th, '09, 01:00

Yay! The immortal theanine thread is back....
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Re: L-Theanine

Postby hop_goblin » Jan 15th, '09, 09:53

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

Postby riccaicedo » Sep 16th, '12, 22:47

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

Postby edkrueger » Sep 17th, '12, 16:39

this is an over 6 year old thread...
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Re: L-Theanine

Postby Teacup1980 » Sep 28th, '12, 20:35

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

Postby edkrueger » Sep 28th, '12, 20:55

this is still an over 6 year old thread...
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Re: L-Theanine

Postby TIM » Sep 28th, '12, 22:49

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Re: L-Theanine

Postby riccaicedo » Sep 30th, '12, 23:42

?
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