Grape  seed  extracts  are  industrial derivatives from whole grape  seeds  that  have  a  great  concentration  of vitamin E, flavonoids, linoleic acid, and  OPCs. Typically,  the  commercial opportunity of  extracting grape  seed  constituents has been  for chemicals  known  as  polyphenols,  including  oligomeric  proanthocyanidins  recognized  as antioxidants.