what is osi stability analysis
All fats and oils are prone to oxidation. The rapidity of oxidation depends on the degree of unsaturation, the presence of antioxidants, and prior storage conditions. In the OSI analysis, the rate of oxidation is slow until any resistance to oxidation is overcome. This time is known as the oxidation induction period.After the induction period, the rate of oxidation increases dramatically. Unlike peroxide value and free fatty acid analyses which give an idea of how good or bad an oil is at a particular time, the OSI analysis has predictive value.he test tube is then placed in a heating block at a temperature of 110Â°C. Clean, dry air is bubbled through the sample, and the efï¬ uent stream of air is bubbled through a collection tube ï¬ lled with ultra pure water. An electrode is placed in the water, and the instrument monitors the conductivity.