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Determination of Fatty Acid Profiles and TAGs in Vegetable Oils by MALDI-TOF/MS Fingerprinting

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Lipidomics

Part of the book series: Methods in Molecular Biology ((MIMB,volume 579))

Summary

Vegetable oils are complex mixtures containing a wide range of major compounds. Triacylglycerols (TAGs; consisting of a glycerol moiety with each hydroxyl group esterified to a fatty acid) are the major components (95–98%) of vegetable oils. TAGs are an important source of energy and nutrition for humans, so their compositional analysis merits extensive interest. Analysis of TAGs has increased in recent years and the advancement has been driven by the development of analytical technologies. This chapter discusses techniques for determination of TAG and fatty acid profiles (FAPs) of vegetable oils using matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF/MS) and gas chromatography–mass spectrometry (GC/MS). Considering the importance of TAG in its native form, rather than FAPs, special emphasis has been given to the TAG fingerprinting analyses of intact oils. MALDI-TOF/MS also enabled calculation of the main fatty acids and their compositions in a simple manner from the TAG profiles; the results are found to be very similar to the prevailing methods of derivatization using GC/MS. This study depicts the potential of MALDI-TOF/MS as an easy, fast, and reliable technique to characterize the TAG and FAPs in vegetable oils.

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Acknowledgments

The authors would like to thank the Ramat Negev Desert Agro Station for providing the olive oil samples. Our appreciation to Dr. Mark Karpasas, Dr. Leonid Kagon, Ms Maya Kaufman, and Ms Shosh Avni for technical help, and Ms Edna Oxman in editing this manuscript.

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Authors and Affiliations

  1. Phyto-Lipid Biotechnology Lab, Department of Biotechnology Engineering, The Institutes for Applied Research, Ben Gurion University of the Negrev, Beer-Sheva, Israel

    Zeev Wiesman & Bishnu P. Chapagain

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  1. Zeev Wiesman
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  2. Bishnu P. Chapagain
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Editors and Affiliations

  1. Golden Leaf Rd. 215, Mars Hill, 28754, U.S.A.

    Donald Armstrong

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© 2009 Humana Press, a part of Springer Science+Business Media, LLC

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Wiesman, Z., Chapagain, B.P. (2009). Determination of Fatty Acid Profiles and TAGs in Vegetable Oils by MALDI-TOF/MS Fingerprinting. In: Armstrong, D. (eds) Lipidomics. Methods in Molecular Biology, vol 579. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-60761-322-0_16

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  • DOI: https://doi.org/10.1007/978-1-60761-322-0_16

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  • Publisher Name: Humana Press, Totowa, NJ

  • Print ISBN: 978-1-60761-321-3

  • Online ISBN: 978-1-60761-322-0

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