No abstract

No abstract

IR spectroscopy is used for a comparative analysis of the trans-isomerization of double bonds in hydrocarbon residuals of lactic and hydrogenated lipids. The maximum of the absorption band of the trans-isomers for all the lipid samples is found to lie at 965 cm -1 . An absorption band at 970 cm -1 is discovered in the spectra of the lactic lipids near the analytic band of the trans-isomers at 965 cm -1 . Based on a gaussian approximation for their absorption spectral bands, the trans-isomer content in the lactic lipid samples is 10-11%. The absorption by lipid molecules at 970 cm -1 has to be taken into account when determining the trans-isomer content of fat and oil products.

No abstract