title: Oxidative stability of sesame and flaxseed oils and their effects on morphometric and biochemical parameters in an animal model.
abstract: BACKGROUND
  Sesame and flaxseed oils, which are rich in essential n-6 and n-3 polyunsaturated fatty acids, are widely consumed. We have determined the optical behavior with respect to the quality and identity of cold-pressed sesame and flaxseed oils. The effects of these oils and their combinations on metabolic parameters in animal models were also measured.
  
  
  RESULTS
  Flaxseed oil emitted carotenoid fluorescence (500-650 nm), although it was more unstable than sesame oil, which had a larger induction period by the Rancimat method. The greater stability of sesame may be a result of the lower quantity of linolenic fatty acids. These oils were added to the feed of 56 rats, whereas animal fat was used for the control group. The sesame oil, flaxseed oil and sesame + flaxseed oils groups showed a significantly reduced adiposity index and blood glucose compared to the control group, whereas total cholesterol, high-density lipoprotein and triglycerides were lower in flaxseed oil and sesame + flaxseed oils (P < 0.05). Sesame + flaxseed oils had reduced levels of low-density lipoprotein and non-high-density lipoprotein (P < 0.05), indicating an anti-atherogenic effect in this group.
  
  
  CONCLUSIONS
  Sesame oil was more stable than flaxseed oil. In an animal model, the diets with polyunsaturated fat sources proportions of 1:1 n-6:n-3 polyunsaturated fatty acids, improved the metabolic parameters, implying cardioprotective effects. © 2016 Society of Chemical Industry.
authors.affiliation: Post-graduate Program in Health and Development in the Mid-West Region, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Priscila S
authors.initials: PS
authors.lastname: Figueiredo
authors.affiliation: Post-graduate Program in Health and Development in the Mid-West Region, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Camila J
authors.initials: CJ
authors.lastname: Candido
authors.affiliation: Center for Biological and Health Sciences, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Jeandre As
authors.initials: JA
authors.lastname: Jaques
authors.affiliation: Post-Graduate Program in Biotechnology and Biodiversity, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Ângela A
authors.initials: ÂA
authors.lastname: Nunes
authors.affiliation: Physics Institute, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Anderson Rl
authors.initials: AR
authors.lastname: Caires
authors.affiliation: Physics Institute, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Flavio Santana
authors.initials: FS
authors.lastname: Michels
authors.affiliation: Physical Education course, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.|Post-Graduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, MS, Brazil.
authors.forename: Jeeser A
authors.initials: JA
authors.lastname: Almeida
authors.affiliation: Center for Biological and Health Sciences, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Wander Fo
authors.initials: WF
authors.lastname: Filiú
authors.affiliation: Post-graduate Program in Health and Development in the Mid-West Region, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Priscila A
authors.initials: PA
authors.lastname: Hiane
authors.affiliation: Post-graduate Program in Health and Development in the Mid-West Region, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Valter A
authors.initials: VA
authors.lastname: Nascimento
authors.affiliation: Post-Graduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, MS, Brazil.
authors.forename: Octavio L
authors.initials: OL
authors.lastname: Franco
authors.affiliation: Post-graduate Program in Health and Development in the Mid-West Region, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
authors.forename: Rita Ca
authors.initials: RC
authors.lastname: Guimarães
mesh_terms: D050154:Adiposity; D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D005227:Fatty Acids / Q000737:chemistry / Q000378:metabolism; D019597:Flax / Q000737:chemistry / Q000378:metabolism; D008043:Linseed Oil / Q000737:chemistry* / Q000378:metabolism; D008075:Lipoproteins, HDL / Q000378:metabolism; D008077:Lipoproteins, LDL / Q000378:metabolism; D008297:Male; D023421:Models, Animal; D010084:Oxidation-Reduction; D051381:Rats; D017208:Rats, Wistar; D012715:Sesame Oil / Q000737:chemistry* / Q000378:metabolism; D031685:Sesamum / Q000737:chemistry / Q000378:metabolism; D014280:Triglycerides / Q000378:metabolism
chemical_list: D001786:Blood Glucose; D005227:Fatty Acids; D008075:Lipoproteins, HDL; D008077:Lipoproteins, LDL; D014280:Triglycerides; D008043:Linseed Oil; D012715:Sesame Oil
keywords: flaxseed oil; metabolic parameters of rats; oxidative stability; polyunsaturated fatty acids; sesame oil