The oxidative stability of sacha inchi oil, linseed oil and perilla seed oil were compared by evaluating the average growth rates of conjugated diene, conjugated triene, peroxide value, carbonyl value, and the oxidation induction time at 110 ℃. In addition, the changes of main trace components and fatty acid compositions during the accelerated oxidation process at 60 ℃ were analyzed. The average growth rates of conjugated diene, conjugated triene, peroxide value and carbonyl value in the three vegetable oils during the oxidation process were as follows: sacha inchi oil linseed oil > perilla seed oil. The loss rates of sterols and polyphenols were as follows: perilla seed oil > sacha inchi oil > linseed oil. The loss rates of vitamin E were as follows: perilla seed oil > linseed oil > sacha inchi oil; the loss levels of polyunsaturated fatty acids and the increase levels of saturated fatty acids of three oils were as follows: sacha inchi oil |