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Bottled Teas Have Almost No Antioxidant Polyphenols, Chemists Find

August 22, 2010: 02:02 PM EST
Commercial bottled tea beverages contain only tiny amounts of poylphenols, the natural antioxidants that have anti-cancer, anti-inflammatory and anti-diabetic properties, according to research by U.S. analytical chemists. The popular beverages that comprise a $1 billion market in the U.S. alone contain fewer polyphenols than one cup of home-brewed green or black tea, the researchers said, and some contain so little that people would need to drink 20 bottles to get the polyphenols present in a cup of tea. The chemists measured polyphenol levels of six brands of tea purchased from supermarkets. Half contained “virtually no” antioxidants. The rest had small amounts that probably would carry little health benefit, especially when the high sugar content of the drinks is taken into account.
Shiming Li, Ph.D., Prof.or Chi-Tang Ho, et al., "Bottled Tea Beverages May Contain Fewer Polyphenols than Brewed Tea", Study presentation, American Chemical Society annual meeting, August 22, 2010, © American Chemical Society
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