title: Effect of Satureja khuzestanica essential oil on oxidative stability of sunflower oil during accelerated storage.
abstract: In this study, the application of various concentrations (0.02%, 0.04%, 0.06% and 0.08%) of Satureja khuzestanica essential oil (EO) was examined on the oxidative stability of sunflower oil and compared to butylated hydroxyanisole (BHA) during storage at 60°C. Gas chromatography (GC) and GC-mass spectrometry analyses of the oils revealed that carvacrol (87.7%) was the major component of EO. Peroxide value and anisidine value measurements in sunflower oil showed that all concentrations of EO had antioxidant effects in comparison to BHA. Oil samples supplemented with EO concentration of 0.08% were the most stable during storage (p < 0.05). EO also was able to reduce the stable free radical 2, 2-diphenyl-1-picrylhydrazyl with a 50% inhibition concentration (IC₅₀) of 31.5 ± 0.6 µg mL⁻¹. Therefore, the results indicate that EO could be used as a natural antioxidant in food lipids.
authors.affiliation: Food Science and Technology Department, College of Agriculture, Shiraz University, Shiraz, Iran.
authors.forename: Mohammad Bagher
authors.initials: MB
authors.lastname: Hashemi
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Niakousari
authors.forename: Mohammad Jamal
authors.initials: MJ
authors.lastname: Saharkhiz
authors.forename: Mohammad Hadi
authors.initials: MH
authors.lastname: Eskandari
mesh_terms: D000975:Antioxidants / Q000737:chemistry*; D009822:Oils, Volatile / Q000737:chemistry*; D010084:Oxidation-Reduction; D010938:Plant Oils / Q000737:chemistry*; D000074242:Sunflower Oil
chemical_list: D000975:Antioxidants; D009822:Oils, Volatile; D010938:Plant Oils; D000074242:Sunflower Oil