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Nutrients 2016, 8(2), 93; doi:10.3390/nu8020093

Automatic 1H-NMR Screening of Fatty Acid Composition in Edible Oils

1
Centro de Asistencia a la Investigación de Resonancia Magnética Nuclear y de Resonancia de Spin Electrónico (CAI de RMN y RSE), Universidad Complutense de Madrid, 28040 Madrid, Spain
2
Department of Molecular Biophysics, Leibniz-Institut für Molekulare Pharmakologie, 13125 Berlin, Germany
3
Department of Nutrition, Bromatology and Food Technology, Veterinary Faculty, Universidad Complutense de Madrid, 28040 Madrid, Spain
4
Department of Organic Chemistry, Chemistry Faculty, Universidad Complutense de Madrid, 28040 Madrid, Spain
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 11 December 2015 / Revised: 14 January 2016 / Accepted: 29 January 2016 / Published: 16 February 2016
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Abstract

In this work, we introduce an NMR-based screening method for the fatty acid composition analysis of edible oils. We describe the evaluation and optimization needed for the automated analysis of vegetable oils by low-field NMR to obtain the fatty acid composition (FAC). To achieve this, two scripts, which automatically analyze and interpret the spectral data, were developed. The objective of this work was to drive forward the automated analysis of the FAC by NMR. Due to the fact that this protocol can be carried out at low field and that the complete process from sample preparation to printing the report only takes about 3 min, this approach is promising to become a fundamental technique for high-throughput screening. To demonstrate the applicability of this method, the fatty acid composition of extra virgin olive oils from various Spanish olive varieties (arbequina, cornicabra, hojiblanca, manzanilla, and picual) was determined by 1H-NMR spectroscopy according to this protocol. View Full-Text
Keywords: NMR spectroscopy; edible oil; fatty acid composition; iodine value; automatic analysis; MestreNova; TopSpin NMR spectroscopy; edible oil; fatty acid composition; iodine value; automatic analysis; MestreNova; TopSpin
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Castejón, D.; Fricke, P.; Cambero, M.I.; Herrera, A. Automatic 1H-NMR Screening of Fatty Acid Composition in Edible Oils. Nutrients 2016, 8, 93.

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