Геометрична ізомеризація ненасичених ацилгліцеринів

Abstract

The article is devoted to the study of the possibility of using ultraviolet radiation to shift the equilibrium of cis-trans-isomerization, which occurs during the hydrogenation of fats towards the formation of cis-isomers at the stage of the appearance of a semi-hydrated complex (carbonium ion). It has been shown that when absorbing unsaturated acylglycerols on an active aluminosilicate catalyst at a temperature of about 240 ° C, the content of trans isomers is increased almost twice as much as the initial product. Treatment of the reaction mixture with ultraviolet radiation in such conditions almost completely blocks the formation of new trans isomers of unsaturated acyl groups, that is, the possibility of inhibition of the formation of trans isomers is proved. This type of treatments can be used to create a new effective fat hydrogenation technology to obtain a product containing a minimal amount of trans isomers or does not contain them at all. In addition, products that are produced by this technology will be significantly cheaper than those offered by modern technology (exhaustive hydrogenation of oils + re-esterification with non-hydrogenated oil).