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How is our tea decaffeinated?
The United States has approved two methods for decaffeinating tea. The two methds are Ethyl acetate and CO2. Each of these has advantages and disadvantages.
Ethyl acetate is a compound found naturally in tea leaves and ripe fruits such as apples and bananas. There are two ways the Ethyl Acetate is used, by a direct method and an indirect method. In the indirect method the tea leaf is moistened directly with water or steam. The moisture containing leaves are then exposed to an Ethyl Acetate solution which passes through them and binds to the caffeine in the leaf. The leaves are then rinsed to cleanse them from any residual Ethyl Acetate that may remain on the leaves. In the direct method, the Ethyl Acetate solution is passed directly through the dry tea. The ethyl Acetate process is an efficient method for decaffeinating teas.
During the CO2 process, moistened leaves are exposed to pressurized CO2 in a sealed chamber. Pressurized CO2 liquefies in the mixture of leaves and moisture and acts as a solvent for the caffeine by binding to it and removing it froom the leaf. After a certain amount of time the liquid is poured off and tea leaves are allowed to dry. The benefits of CO2 are that it only binds to the caffeine which allows for the retention of flavor and antioxidants. Tea that undergo either of these methods are decaffeinated to a level of 0.1% or less on a dry weight basis. That means that our decaffeinated teas are 99.6% caffeine free.


Green Tea Expert Nadine Taylor talks about Green Tea and Caffeine...
Green Tea Question
Dear Nadine:
How much caffeine is in a cup of green tea?
Jane, Green Tea Answer
An 8-oz. cup of green tea contains about 25-30 mg of caffeine.  Black tea has about twice as much caffeine as green tea, weighing in at about 40mg, while drip coffee has a nerve-jangling 100-120mg.  Although some people who are caffeine-sensitive may find that drinking green tea (especially in large amounts) keeps them awake at night, most people don't have this problem.  That may be because green tea also contains theanine, a natural tranquilizer that counteracts the stimulating effects of caffeine. 

Green Tea and Caffeine


Ever since 8th century Buddhist monks discovered that it could help them stay awake during marathon meditation sessions, tea has been used to increase energy, brighten the mood and refresh the mind. The invigorating effects of tea are due to caffeine, a central nervous system stimulant that fights sleepiness, speeds up the heart rate, increases alertness, improves athletic endurance, assists in weight loss and may even heighten intellectual activity.

Of course, the downside of caffeine is that too much can make you nervous, irritable, and unable to fall asleep at night. It can also reduce fine motor coordination and trigger headaches and dizziness. Most healthy adults can handle 200-250 mg. per day without adverse effects, but some find that even a small dose makes them jittery.The best of both worlds

When it comes to caffeine, green tea may offer the best of both worlds -- just enough to brighten the mood, but not enough to trigger sleepless nights. The average cup of green tea contains about 20 mg of caffeine, while black tea has about 40 mg, and drip coffee packs a nerve-jangling punch of 90-150 mg. Although some who are sensitive to caffeine may find that drinking green tea (especially in large amounts) keeps them awake at night, most people don't have this problem. That may be because green tea also contains theanine, an amino acid that functions as a natural tranquilizer.Decaffeinated tea

For those who are really serious about limiting their caffeine, there is always the option of drinking decaffeinated tea. But beware, as the standard way of decaffeinating tea (using ethyl acetate) obliterates about 70 percent of green tea’s catechins. This method involves soaking the tea leaves in a chemical solvent called ethyl acetate, which binds to the caffeine. Then both the ethyl acetate and the caffeine are boiled away. Unfortunately, most of the health-promoting catechins also disappear in the process.

The carbon dioxide method (also referred to as "effervescence") is a much gentler, more natural process. The tea leaves are soaked in liquefied carbon dioxide gas, which binds to the caffeine and "soaks it out" of the leaves. The liquid and the caffeine are then poured off (no heating required), leaving about 95 percent of the tea catechins intact.

So if you do decide to drink decaffeinated green tea, be sure to look for a brand that uses the carbon dioxide or effervescence method. Otherwise, you may be drinking a brew that’s essentially devoid of catechins.
Green Tea Question
Dear Nadine,
Does caffeine have any health benefits?
Alex M.
Green Tea Answer
Dear Alex,
Caffeine affects the central nervous system, activating blood circulation, increasing mental alertness, counteracting sleepiness and helping you bounce back from fatigue.  It improves athletic endurance by stimulating the breakdown and use of fat as an energy source, so the body doesn't deplete its glycogen stores.  A natural diuretic, caffeine increases urination, which can help detoxify the body and lower the blood pressure.  It's long been used as a remedy for hangovers because it blocks absorption of alcohol and helps the body dispose of it at a faster rate.