P-36 - Investigation of the effect of biologically active supplements on oxidative stability of flaxseed oil

Abstract

The influence of added vitamins and other biologically active substances (BAS) (α-tocopherol, α-tocopherol acetate, cholecalciferol, β-carotene, lutein, zeaxanthin, coenzyme Q10, selenomethionine) on resistance of flaxseed oil to oxidation, was investigated. For this purpose, kinetic data were obtained on accumulation of primary and secondary oxidation products, free fatty acids in flaxseed oil, as well as the consumption of BAS during the storage of flaxseed oil enriched with supplements. It was shown that the supplements used to enrich flaxseed oil could exhibit both antioxidant and pro-oxidant properties depending on their chemical structure and concentration. The fat-soluble esters of ascorbic acid and their compositions with natural antioxidants based on legumes have shown to be effective and safe stabilizers of BAS enriched flaxseed oil, which enable to substantially inhibit the oxidation and oxidative destruction of flaxseed oil lipids, to reduce the losses of BAS, and, therefore, to extend the storage period of the oil. Basing on the investigation results, the formulas of new, oxidation-resistant functional food products based on flaxseed oil have been developed, and their production has been organized.