Oxidation is one of the most significant chemical reactions occurring during the frying process. This reaction several factors such as high temperatures, presence of oxygen and presence of unsaturated fatty acids in a high rate, targets of this reaction To improve the quality of the oil, increase its stability its duration of use, approaches have by several companies in the world such as the mixture of different oils, research and use of new plant species producing better stable oils and the use of synthetic or natural antioxidants.