Right, they can only claim the particular use of these compounds specifically for the antioxidant properties and nothing more. These are not their compounds; only the method of using them specifically as antioxidants.
If I found a way to use dopamine to cure cancer, I do not own dopamine and I can not charge every person on the planet a royalty fee every time they feel happy.
This patent is a fancy chemist way of claiming the "orange juice" effect of a non psychotropic cannabinoid family of compounds.