What is "grandinin"

n. (context organic compound English) A particular ellagitannin.

Grandinin is an ellagitannin. It can be found in Melaleuca quinquenervia leaves and in oaks species like the North American white oak ( Quercus alba) and European red oak ( Quercus robur). It shows antioxydant activity. It is an astringent compound. It is also found in wine, red or white, aged in oak barrels.

It is a castalagin glycoside by binding of the pentose lyxose. It contains a nonahydroxytriphenic acid moiety.

It suppresses the phosphorylation of the epidermal growth factor receptor in human colon carcinoma cells.