Novel compositions containing conjugated linoleic acids are efficacious as animal feed additives and human dietary supplements. Linoleic acid is converted to its conjugated forms in which the resulting composition is low in certain unusual isomers compared to conventional conjugated linoleic products. In addition, the inventions provides compositions that are prepared according to a novel method that controls oxidation of CLA into volatile organic compounds as well as containing metal oxidant chelators to control oxidation during storage.
