533 results about "Polyphenol" patented technology

Polyphenols (/ˌpɒliˈfiːnoʊl, -nɒl/; 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. The number and characteristics of these phenol structures underlie the unique physical, chemical, and biological (metabolic, toxic, therapeutic, etc.) properties of particular members of the class. Examples include tannic acid and ellagitannin. The historically important chemical class of tannins is a subset of the polyphenols.