Aeration (Dissolved Oxygen Leading to Increase in Peroxide and Anisidine Values)
Exposure to atmospheric oxygen or aeration will lead to a high level of dissolved oxygen in the oil, which will result in an increase in the oxidation of the oil, leading to increases in the peroxide and anisidine values of the oil. This can happen during the storage and handling processing if equipment used in the process are not properly enclosed or sealed and rendered air-tight due to negligence.