Improvement for oxidative stability and sensory properties of sunflower oil flavored by huai chrysanthemum × morifolium ramat. Essential oil during accelerated storage

Abstract

Flavored oils, as one of the most important condiments in cuisine, are widely used in vegetable oils all over the world. The oxidative stability and sensory qualities of sunflower oil, flavored by essential oil obtained from Chrysanthemum × morifolium Ramat. (HCEO) extraction, were studied. After the accelerated storage at 65◦ C for 30 days, HCEO (1600 mg/kg) was able to markedly inhibit the increase in some important indicators of lipid alteration, among which acidity, peroxide, ρ-anisidine and total oxidation values, together with other parameters (thiobarbituric acid reactive substances, conjugated dienes and trienes). Finally, it was observed that the sunflower oil flavored by HCEO (1600 mg/kg) restrain the modifications of fatty acid compositions and showed improved sensory properties in respect to non-added oil. Consequently, HCEO can be considered a valid additive for flavored vegetable oils with antioxidant effects.