title: Some rape/canola seed oils: fatty acid composition and tocopherols.
abstract: Seed samples of some rape and canola cultivars were analysed for oil content, fatty acid and tocopherol profiles. Gas liquid chromotography and high performance liquid chromotography were used for fatty acid and tocopherol analysis, respectively. The oil contents of rape and canola seeds varied between 30.6% and 48.3% of the dry weight (p<0.05). The oil contents of rapeseeds were found to be high compared with canola seed oils. The main fatty acids in the oils are oleic (56.80-64.92%), linoleic (17.11-20.92%) and palmitic (4.18-5.01%) acids. A few types of tocopherols were found in rape and canola oils in various amounts: α-tocopherol, γ-tocopherol, δ-tocopherol, β-tocopherol and α-tocotrienol. The major tocopherol in the seed oils of rape and canola cultivars were α-tocopherol (13.22-40.01%) and γ-tocopherol (33.64-51.53%) accompanied by α-T3 (0.0-1.34%) and δ-tocopherol (0.25-1.86%) (p<0.05). As a result, the present study shows that oil, fatty acid and tocopherol contents differ significantly among the cultivars.
authors.forename: Bertrand
authors.initials: B
authors.lastname: Matthaus
authors.forename: Mehmet Musa
authors.initials: MM
authors.lastname: Özcan
authors.forename: Fahad
authors.initials: F
authors.lastname: Al Juhaimi
mesh_terms: D001937:Brassica / Q000737:chemistry* / Q000145:classification; D029741:Brassica rapa / Q000737:chemistry*; D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid; D005227:Fatty Acids / Q000032:analysis*; D005229:Fatty Acids, Monounsaturated / Q000032:analysis / Q000737:chemistry; D019787:Linoleic Acid / Q000032:analysis; D019301:Oleic Acid / Q000032:analysis; D019308:Palmitic Acid / Q000032:analysis; D010938:Plant Oils / Q000737:chemistry*; D000074262:Rapeseed Oil; D012639:Seeds / Q000737:chemistry*; D013045:Species Specificity; D024505:Tocopherols / Q000032:analysis*; D024502:alpha-Tocopherol / Q000032:analysis; D024503:beta-Tocopherol / Q000032:analysis
chemical_list: D005227:Fatty Acids; D005229:Fatty Acids, Monounsaturated; D010938:Plant Oils; D000074262:Rapeseed Oil; D019301:Oleic Acid; D019308:Palmitic Acid; D019787:Linoleic Acid; D024503:beta-Tocopherol; D024502:alpha-Tocopherol; C479072:delta-tocopherol; D024505:Tocopherols