Corn oil, also known as corn oil or corn germ oil, is oil extracted from corn germ. The fat content of corn germ is between 17% and 45%, accounting for more than 80% of the total fat content of corn. The characteristic of the fatty acids in corn oil is that the content of unsaturated fatty acids is as high as 80% to 85%. Corn oil itself does not contain cholesterol. It has a dissolving effect on the accumulation of cholesterol in the blood, so it can reduce the hardening effect on blood vessels. It has a positive preventive and therapeutic effect on senile diseases such as arteriosclerosis and diabetes. Due to the function of natural complex vitamin E, it has obvious therapeutic e effetti preventivi su malattie cardiache, tromboflebitis, disfunzione riproduttiva, atrofia muscolare e encefalomalacia nutrizionale .
L'olio di mais è raffinato sulla base dell'olio raffinato di mais attraverso la defosforizzazione, la deacidificazione, la degumping, la decolorazione, la deodorizzazione e la deodorazione . L'olio di mais è chiaro e trasparente, profumato e ha un punto di fumo elevato, che lo rende molto adatto per cuocere rapidamente e friggere .

