Prolonged heating of oils result in formation of

The formation of the epoxide ring has been reported to proceed through two distinct mechanisms at 50°C, either at the site of the double bond or nearby it. Studies on formation of hydroxy- and keto-fatty acyl groups at frying temperature are scarce, as a high number of compounds are formed as compared to the epoxides. The most likely decomposition pathway of hydroperoxides is the homolytic cleavage of the hydroperoxide group to yield hydroxyl and alkoxyl radicals.