what is a polyphenial
Polyphenols (noun, pronunciation of the singular /pÉli'finÉl/ or /pÉli'fÉnÉl/, also known as polyhydroxyphenols) are a structural class of mainly natural, but also synthetic or semisynthetic, organic chemicals characterized by the presence of large multiples of phenol structural units.he term polyphenol should be used to define compounds exclusively derived from the shikimate / phenylpropanoid and/or the polyketide pathway, featuring more than one phenolic unit and deprived of nitrogen-based functions.