Summary Cottonseed and soybean oils and mixed hydrogenated vegetable fats contain alkali-labile antioxygenic substances other than the tocopherols.'The chemical behavior of these fat antioxidants showed that they are similar to, if not identical with, the chroman-5, R- quinones and occur in fresh vegetable fats in a colorless, possibly quinol form Their isolation and concentration were accom plished by chromatographic adsorption and the use of ...
