Are yams and sweet potatoes the same?
A substance that is obtained from wheat germ oil or by synthesis, biologically exhibits the most vitamin E activity of the tocopherols, and is an antioxidant.
A water-insoluble alcohol that occurs in plant oils (especially wheat germ oil), egg yolks, and liver, and is also produced synthetically. Alpha-tocopherol is the principal form of vitamin E in the body. Chemical formula: C29H50O2. See more at vitamin E.