PHYSICAL AND CHEMICAL-PROPERTIES OF HYDROGENATED HIGH ERUCIC RAPESEEDOIL

High erucic acid rapeseed (HEAR) oil from the Peoples Republic of Chin a was hydrogenated selectively and non-selectively. Samples of the hyd rogenated oils were analysed for fatty acid and total trans content. T he formation of solid fat was determined by p-NMR and visualized by DS C-melting curves. Crystallization temperatures were approximately 14-1 5 degrees C lower than dropping points. DSC crystallization curves sho wed two distinct peaks. High melting glycerides (HMG) contained higher levels of triglycerides of carbon 56 and higher than the original oil . The oil contained 30 ppm of sulfur as determined by the combustion m ethod. Estimation of sulfur content by analyses of the spent catalyst was 35 ppm. Appropriate mixtures of the hydrogenated HEAR and liquid s unflower oil for margarine formulation were in the beta' form.