INTRODUCTION Fatty acids, a major constituent of lipids, play an important role in human nutrition and health by providing a concentrated source of energy and playing a key role in many metabolic processes. Most naturally occurring fatty acids that are found in lipids possess a saturated and unsaturated unbranched carbon chain containing an even number of carbon atoms, from 4 to 28. Among these fatty acids, linoleic acid 18:2n-6, LA and α-linolenic acid 18:3n-3, LN are known as essential fatty acids; their omega-6 and omega-3 metabolites, arachidonic acid 20:4n-6, AA , eicosapentaenoic acid 20:5n-3, EPA and docosahexaenoic acid 22:6n-3, DHA , are known to exhibit significant biochemical and physiological effects in the body that primarily induces a positive influence on human nutrition and health. Thus, the functions of these omega-3 and omega-6 polyunsaturated fatty acids PUFAs have attracted consumer attention, and they are used in functional foods and nutraceuticals. On the other hand, these PUFAs are easily oxidized, even at room temperature, causing undesirable flavors and lowering the nutritional quality and safety of lipid-containing foods. In foods, lipids have a significant effect on quality even when the lipid content is very small. They not only contribute to the flavor, odor, color and texture but also confer a feeling of satiety and palatability to foods. Thus, the oxidative deterioration of PUFA in food lipids is a serious problem in many sectors of the food industry