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Antioxidants are substances found in some food and
drinks that can help to inhibit the oxidation reactions
caused by free radicals. Well known examples of
antioxidants are vitamins A, C and E. |
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Free radicals are unstable molecules that can be produced in the body
as well in the environment from sunlight and pollution. |
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| A flavonoid is a powerful antioxidant found in tea. |
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Tea has higher antioxidant activity than many fruits and vegetables. The
Ministry of Agriculture Fisheries and Foods has said tea is an important
source of antioxidants in the UK diet. |
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Antioxidants are thought to work by helping to inhibit the oxidation reactions
caused by free radicals. |
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Both green and black tea are rich in flavonoids and there is little difference
between their level of antioxidant activity. |
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Vitamins A, C, and E, which are found mainly in fruits and
vegetable, are the best known antioxidants.
Flavonoids are specific types of antioxidants found in tea, apples,
onions and other foods, which are currently the focus of intense
study due to their potential health benefits. |
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Brewing time will affect the level of antioxidants released from the tea leaves
into the tea. The majority of antioxidants will be released during the first
4 minutes of brewing. |
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More research is needed before we can draw reliable conclusions about the
level of antioxidants we need.
To maximise the benefits antioxidants offer, eat a varied, low-fat diet with
plenty of fruits and vegetables, as well as a few cups of tea. |
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