A polyphenol antioxidant is a hypothesized type of antioxidant studied in vitro. Numbering over 4,000 distinct chemical structures mostly from plants, such polyphenols have not been demonstrated to be
Blackberries are a source of polyphenols.
Red grapes contain polyphenols, although there is no evidence that consuming red grapes provides antioxidant effects in vivo
Cocoa, the main ingredient of chocolate, is a source of polyphenols
Radical (chemistry)
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In chemistry, a radical, also known as a free radical, is an atom, molecule, or ion that has at least one unpaired valence electron. With some exceptions, these unpaired electrons make radicals highly
Antioxidant effect of polyphenols and natural phenols
…polyphenols, as do red wines, chocolate, black tea, green tea, pecans, and cinnamon. The regulation theory considers a polyphenolic ability to scavenge free radicals and up-regulate certain metal chelation reactions. Various reactive oxygen species, such as singlet oxygen, peroxynitrite and hydrogen peroxide, must…
The deep colour of lithium naphthalenide results from the lithium naphthanide radical.
Moses Gomberg (1866–1947), the founder of radical chemistry