Any of various oxygen in the air at room temperature) and its effects.
Aromatic compounds such as aromatic amines , phenols , and aminophenols delay loss of elasticity in rubber and gummy deposits in gasoline. Preservatives such as tocopherol ( vitamin E ), propyl gallate, butylated hydroxytoluene (BHT), and butylated hydroxyanisole (BHA) prevent rancidity in fats , oils , and fatty foods. In the body, antioxidants such as vitamins C and E and selenium may reduce oxidation caused by {{link=free radical">free radicals .