Sunflower oil [N=407]

Anisidine value

The anisidine value gives a measure of secondary oxidation products in oils and fats. Peroxides in oxidized oils are unstable intermediates, which decompose into various carbonyl and other secondary oxidation products, principally 2-alkenals and 2,4-dienals. The analytical procedure involves treating the oil or fat, in isooctane solution, with p-anisidine reagent and the level of reaction products is determined spectrophotometrically at 350nm.