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Licensed Unlicensed Requires Authentication Published by De Gruyter March 26, 2016

Some rape/canola seed oils: fatty acid composition and tocopherols

Bertrand Matthaus , Mehmet Musa Özcan EMAIL logo and Fahad Al Juhaimi

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.


Corresponding author: Mehmet Musa Özcan, Faculty of Agriculture, Department of Food Engineering, University of Selcuk, 42031 Konya, Turkey, Phone: +90 332 2232933, Fax: +90 332 2410108, E-mail:

Acknowledgments:

This work was supported by DAAD (Germany). We are grateful to Dr J. Fiebig (Head of Institute). The authors also thank to Mrs E. Claudia and Miss E. Uda for skilful technical assistance with the GLC and HPLC.

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Received: 2016-1-6
Revised: 2016-2-10
Accepted: 2016-3-6
Published Online: 2016-3-26
Published in Print: 2016-3-1

©2016 by De Gruyter

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