Hydrogenation is typically used to improve the flavor stability and keeping qualities of oil. An unhydrogenated oil can turn rancid because its unsaturated carbon atoms are free to bond to oxygen atoms from the air, forming peroxides, which give rancid fats their “off” flavor.

What is the purpose of hydrogenation?

Purpose of hydrogenation

To convert a liquid oil into a solid fat.

Why is hydrogenation of fats done?

Fat hydrogenation is the process of combining fat — typically, vegetable oils — with hydrogen, in order to make it more saturated. The goal is to turn liquid oils into solid or semi-solid fats that can replace butter and shortening in spreads, candies, baked good, and other products. ...