Green
tea
caffeine content and information
Yes,
green tea does contain caffeine. Content
varies by the amount of tea used and the length
of time the leaves are infused. All things being
equal here is a breakdown of the caffeine content
of green tea:
Percentage
of caffeine in the following beverages:
Coffee- 0.05%
Black tea- 0.05%
Gyokuro- 0.02%
Sencha- 0.015%
Hoji cha- 0.008%
Genmai cha- 0.008%
Green Tea has four important
constituents that all work together, caffeine, tannin,
essential oils and vitamins. Many people may be surprised
to hear that caffeine can actually be beneficial
when taken in tea as it works slightly differently
from the caffeine in coffee. The good news is caffeine
in tea can stimulate the circulation and metabolism
via the central nervous system. As more oxygen is
pumped to the brain, mental powers are heightened,
reactions speed up and muscle function improves.
The tannin in the Green Tea works
alongside the caffeine, having a relaxing and stabilising
effect.
This means the caffeine is absorbed more slowly and
prevents that "caffeine shock" we all know
too well from coffee.
Green
tea contains L-theanine. L-theanine
is a healthy amino acid that is only found in tea
plants and certain mushrooms. L-theanine directly
stimulates the production of alpha brain waves
which promotes a state of relaxed awareness, it
has a calming effect on the body without making
one drowsy.
"There
is a way of naturally removing caffeine and preserving
the health benefits. Steep the tea for 45 seconds
in hot water and then pour off the liquid. Next,
add more hot water and steep as you normally would
to brew a cup of that tea. Up to 80 percent of
the caffeine is released in the first infusion
of water so only minimal amounts will remain when
you add water the second time. This method eliminates
very little of the tea’s flavor and aroma."
This
quote is from Dr. Andrew Weil who gave us permission
to print this excerpt from his web site. Dr. Weil
is an internationally famous physician and an expert
on integrative medicine.
If
you are interested in more information go to his
excellent web site- Dr
Weil.com. Run
a seach for "green
tea" and there is a wealth of information
from the many articles he has written on the health
benefits of green tea.
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