Methods of producing high purity palmitoleic acid esters from natural oils are disclosed. The natural oils may comprise plant oil, nut oil, microalgae oil, and fish oil. The methods of processing the natural oil comprise transesterification with ethanol as the reacting solvent to produce ethyl esters. Methods of producing a high purity fraction of Omega-3, 6, & 9 fatty acid esters from natural oils are also disclosed. The high purity fatty acid esters may be used in nutrition, cosmetic, and nutraceutical products.