Diets
enriched with vegetable oils (such as sunflower oil, soyabean oil or
corn oil) that contain a high unsaturated percentage should result in
healthier products for consumers (Mitchaothai et al., 2007). Unfortunately,
polyunsaturated fatty acids (PUFA) incorporation is restricted
by the resulting decrease in lipid oxidative stability (Bryhni, Kjos,
Ofstad, & Hunt, 2002).