Antioxidants are substances that provide protection against oxidants. They prevent the formation of oxidants and the damage they can cause to biomolecules. They extend the shelf life of foods. Antioxidants can be natural or synthetic. Some enzymes, phenolic compounds, flavonoids, carotenoids and some vitamins found in plants, fruits and vegetables are effective natural antioxidant compounds. There are also effective synthetic antioxidants such as BHA, BHT, TBHQ. However, it has been stated that synthetic antioxidants added to foods are harmful and their inclusion in foods is limited. Therefore, recent studies have focused on natural antioxidants.