Hello, glad to answer your question. Corn oil is pressed from the germ, purely physical pressing will be very low oil yield, now basically are used to press and leaching. In principle, the oil content of the germ is about 40%, that is to say, 100 pounds of germ can produce 40 pounds of oil. Germ accounts for 10% of corn. In other words, less than 4 pounds of gross oil can be produced from 100 pounds of corn. Out of the gross oil must be refined to achieve the purpose of use, that is, one hundred pounds of corn oil can be about 3 pounds of refined oil. To sum up, there is no big difference between corn germ oil and corn press oil. I hope my answer is helpful to you