Noun
English Wikipedia has an article on:polyphenolWikipedia
polyphenol (plural polyphenols)
(chemistry) any of a large class of organic compounds, of plant origin, having more than one phenol group; they tend to be colourful and to have antioxidant properties
A standard cup of hot green tea is packed with antioxidants, such as catechins, which are a type of polyphenol that lowers the risk of cancer. Source: Internet
This potent mixture of polyphenol derivates makes green tea one of the most health advantageous teas in the market. Source: Internet