The Foodie Blogroll

segunda-feira, 20 de julho de 2009

Caffeine and Tea

What Is Caffeine????

Caffeine was first discovered in tea in 1827, and was named theine. It was later found in mate and various other plants. Eventually it was shown that the theine of tea was identical with the caffeine of coffee, and the term theine was then dropped.

Does Tea Contain More Caffeine Than Coffee?????

While coffee and tea are both sources of caffeine, the amounts of caffeine in any single serving of these beverages varies significantly. An average serving of coffee contains the most caffeine, yet the same serving size of tea provides only 1/2 to 1/3 as much.One of the more confusing aspects of caffeine content is the fact that coffee contains less caffeine than tea when measured in its dry form. The caffeine content of a prepared cup of coffee is significantly higher than the caffeine content of a prepared cup of tea

Tea Black (8oz) 40mg

Tea Green (8oz) 20mg
Tea White(8oz) 10mg

Coca Cola (12 oz can) 34 mg

Pepsi (12 oz can) 38 mg

Barq's Root Beer (12 oz can) 22 mg

Chocolate milk (8 oz) 4 mg

Dark chocolate (1 oz) 20 mg

Milk chocolate (1 oz) 6 mg

What is Decaffeinated Tea??

Decaf tea is any tea that has undergone a process which eliminates most of the caffeine content. Two processes are currently used to commercially decaffeinate tea, an ethyl acetate and a CO2 method. While the ethyl acetate method is cheaper and easier, the CO2 method has been proven much safer. Decaf tea is the perfect alternative for tea lovers who are trying to lower their caffeine intake.

Benefits of Tea

Numerous studies have demonstrated the anti-cancer properties of antioxidant polyphenols. Some studies have suggested that tea's polyphenols may reduce the risk of gastric, esophageal and skin cancers, if one consumes 4 to 6 cups daily. Another study showed that just 2 cups of tea may lower the risk of ovarian cancer by 46 percent in women. Other studies have found that polyphenols help prevent blood clotting and lower cholesterol levels. One Japanese study found that Green Tea lowers death rates from heart Disease.

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