Kinetic studies of oxygen dependence during initial lipid oxidation in rapeseed oil

Lipid oxidation was studied in rapeseed oil, stored at 35 or 50 degrees C i n 0.03, 0.3, 1.0 or 1.8% oxygen for 42 days. Peroxide value (PV), oxygen co nsumption, tocopherol consumption end production of volatile compounds were analyzed to follow the oxidation, At 50 degrees C, lipid oxidation measure d as oxygen consumption or PV was only slightly influenced by oxygen concen tration greater than or equal to 1%. Below 0.5% the influence was strongly enhanced. The production of volatiles showed different relationships to oxy gen concentration and some compounds were produced in larger amounts at low er O-2, than at higher O-2 concentrations.