Observations on the destruction of cyclopropene fatty acids of cottonseed oil on exposure to visible light

Abstract

AbstractThe destruction of cyclopropene fatty acids of cottonseed oil on exposure to light from a 500 W tungsten bulb was studied under various conditions in the laboratory. The Halphen test was used to determine the destruction. Visible light exerted a strong catalytic effect and oxygen, at least in traces, was necessary. In 4–12 hr the Halphen response was negative for refined cottonseed oil (0.2–10 ml) sealed in a 50 ml flask at 1 mm Hg without apparent peroxide development. No significant difference was noticed in the peroxide development pattern of the exposed and unexposed samples in the airoven stability test.