Comparative oxidation of linseed and sardine oils

Mechanism of the Oxidation of Drying Oils

“…It apparently does not greatly affect the pickup of oxygen, hence dehydration may be involved in the polymerization step. The increase in conjugation found in oxidized oils has been ascribed (20,26) to the formation of unsaturation by the dehydration step. It has been found that methyl linoleate evolves 1 molecule of water on exposure to air in thin films and methyl linolenate evolves between 1 and 2 moles per mole of ester (39).…”

A Dielectric Study of the Autoxidation of Ethyl Sorbate

“…This method has been used to study the autoxidations and polymerizations of various hydrocarbons and oils. [3][4][5][6][7][8][9] In many cases the change in dielectric constant has been shown to be an accurate measure of oxidation ; the slope of the curve was generally dependent on the experimental conditions. In most of the autoxidations studied, the dielectric constant increased along with the viscosity, refractive index, specific gravity, acid number and molecular weight; the iodine number may increase or decrease depending on the particular substances involved in the reaction.…”