Grandinin

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 a castalagin glycoside by binding of the pentose lyxose. It is an astringent compound. It is also found in wine, red or white, aged in oak barrels.

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