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Vigor C, Züllig T, Eichmann TO, Oger C, Zhou B, Rechberger GN, Hilsberg L, Trötzmüller M, Pellegrino RM, Alabed HBR, Hartler J, Wolinski H, Galano JM, Durand T, Spener F. α-Linolenic acid and product octadecanoids in Styrian pumpkin seeds and oils: How processing impacts lipidomes of fatty acid, triacylglycerol and oxylipin molecular structures. Food Chem 2022; 371:131194. [PMID: 34600364 DOI: 10.1016/j.foodchem.2021.131194] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 09/06/2021] [Accepted: 09/16/2021] [Indexed: 12/13/2022]
Abstract
Styrian pumpkin seed oil is a conditioned green-colored oil renowned for nutty smell and taste. Due to α-linolenic acid (ALA) contents below 1% of total fatty acids and the prospect of nutritional health claims based on its potential oxidation products, we investigated the fate of ALA and product oxylipins in the course of down-stream processing of seeds and in oils. Lipidomic analyses with Lipid Data Analyzer 2.8.1 revealed: Processing did not change (1) main fatty acid composition in the oils, (2) amounts of triacylglycerol species, (3) structures of triacylglycerol molecular species containing ALA. (4) Minor precursor ALA in fresh Styrian and normal pumpkins produced 6 product phytoprostanes in either cultivar, quantitatively more in the latter. (5) In oil samples 7 phytoprostanes and 2 phytofurans were detected. The latter two are specific for their presence in pumpkin seed oils, of note, quantitatively more in conditioned oils than in cold-pressed native oils.
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Affiliation(s)
- Claire Vigor
- Institute of Biomolecules Max Mousseron, UMR 5247, CNRS, University of Montpellier, ENSCM, 34093 Montpellier, France
| | - Thomas Züllig
- Core Facility Mass Spectrometry, Medical University of Graz, Stiftingtalstr. 24, 8010 Graz, Austria
| | - Thomas O Eichmann
- Department of Molecular Biosciences, University of Graz, Heinrichstr. 31/II, 8010 Graz, Austria
| | - Camille Oger
- Institute of Biomolecules Max Mousseron, UMR 5247, CNRS, University of Montpellier, ENSCM, 34093 Montpellier, France
| | - Bingqing Zhou
- Institute of Biomolecules Max Mousseron, UMR 5247, CNRS, University of Montpellier, ENSCM, 34093 Montpellier, France
| | - Gerald N Rechberger
- Department of Molecular Biosciences, University of Graz, Heinrichstr. 31/II, 8010 Graz, Austria
| | | | - Martin Trötzmüller
- Core Facility Mass Spectrometry, Medical University of Graz, Stiftingtalstr. 24, 8010 Graz, Austria
| | - Roberto M Pellegrino
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via del Giochetto, Building B, 06126 Perugia, Italy
| | - Husam B R Alabed
- Department of Chemistry, Biology and Biotechnology, University of Perugia, via del Giochetto, Building B, 06126 Perugia, Italy
| | - Jürgen Hartler
- Institute of Pharmaceutical Sciences, University of Graz, Universitätsplatz 1/I, 8010 Graz, Austria; Field of Excellence BioHealth - University of Graz, Humboldtstraße 50, 8010 Graz, Austria
| | - Heimo Wolinski
- Department of Molecular Biosciences, University of Graz, Heinrichstr. 31/II, 8010 Graz, Austria
| | - Jean-Marie Galano
- Institute of Biomolecules Max Mousseron, UMR 5247, CNRS, University of Montpellier, ENSCM, 34093 Montpellier, France
| | - Thierry Durand
- Institute of Biomolecules Max Mousseron, UMR 5247, CNRS, University of Montpellier, ENSCM, 34093 Montpellier, France
| | - Friedrich Spener
- Department of Molecular Biosciences, University of Graz, Heinrichstr. 31/II, 8010 Graz, Austria; Division of Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, Neue Stiftingtalstr. 6/6, 8010 Graz, Austria.
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