Oxidative stability of soybean and corn oils enriched with Pluchea quitoc hydroalcoholic extract





Hydroalcoholic extract, Induction period (IP), Lipid oxidation, Pluchea quitoc


Soybean and corn oils are among the most popular vegetable oils, and are ingredients which are widely used in cooking and in the food industry. These oils contain many unsaturated fatty acids such as oleic, linoleic and linolenic acids, which makes them easily oxidized by oxygen. Extensive efforts are being made to prevent or minimize vegetable oil oxidation through the development of antioxidants. Phenolic antioxidants which are present in some extracts can be used as food additives to prevent lipid oxidation. In this study chromatographic analyses (HPLC and GC) of the Pluchea quitoc hydroalcoholic extract were performed. The content of phenolic compounds by the Folin-Ciocalteau method and the antioxidant properties against radicals 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2′-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS) were also evaluated. The effect of samples prepared with soybean and corn oils enriched with Pluchea quitoc hydroalcoholic extract was determined and compared with samples of these oils which were free of antioxidants and with samples containing the synthetic antioxidant BHT. The results showed potential for application of the extract. A high content of phenolic compounds (314 milligrams of gallic acid equivalents (GAE)/g of extract) and good IC50 values were detected for the inhibition of the radicals DPPH and ABTS (13.2 µg·mL-1 and 5.6 µg·mL-1). In the evaluation of the oxidative stability of the oils enriched with this extract, it was found that at 1% concentration it was possible to obtain values of induction period (IP) close to the samples with added BHT.


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How to Cite

Alves M, Coutinho E, Klein A, Santos M, Facco J, Rosa M, Fuzinatto M, Martelli S, Fiorucci A, Cardoso C, Simionatto E. Oxidative stability of soybean and corn oils enriched with Pluchea quitoc hydroalcoholic extract. grasasaceites [Internet]. 2022Mar.23 [cited 2023Jan.30];73(1):e440. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1918




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