Grapes are a good source of polyphenols Polyphenols are known antioxidants that help fight free radicals in the body. The grape skins and pulp contain the most polyphenols. They also have the highest antioxidant abilities.
Is eating grape skin good for you?
Aside from the fact that its challenging to peel cherries and grapes, and not really possible to peel most berries, the peels offer lots of antioxidants and nutrients. Grape skin is particularly beneficial since this part of the grape has the highest amount of antioxidants in the whole fruit.