Molecular Composition of and Potential Health Benefits Offered by Natural East African Virgin Sunflower Oil Products: A 400 MHz 1H NMR Analysis Study

Simple item page
dc.cclicenceCC-BY-NCen
dc.contributor.authorPercival, B.
dc.contributor.authorSavel, Etienne
dc.contributor.authorAmpem, G.
dc.contributor.authorGibson, M.
dc.contributor.authorEdgar, Mark
dc.contributor.authorJafari, F.
dc.contributor.authorFrederick, Kianna
dc.contributor.authorWoodason, Katy
dc.contributor.authorWilson, Philippe B.
dc.contributor.authorGrootveld, Martin
dc.date.acceptance2019-03-03
dc.date.accessioned2019-05-16T14:18:47Z
dc.date.available2019-05-16T14:18:47Z
dc.date.issued2019-03-18
dc.descriptionopen access articleen
dc.description.abstractObjectives: Sunflower oil (SFO) is regularly employed for cosmetic, emollient and food frying purposes, the latter representing its foremost use globally. Therefore, full investigations of the molecular composition and quality of sunflower oil products are a major requirement. In this study, high-field 1H NMR analysis was employed to explore the molecular composition and authenticities of East African virgin (EAV) SFO products, particularly their acylglycerol fatty acid contents, together with those of selected minor constituents. Results acquired were statistically compared to those acquired on commercially-available, EU-approved refined SFO products via NMR-linked multivariate chemometrics strategies. Methodology: High-field 1H NMR spectra of EAV and refined SFOs (n = 55 and 4 respectively) were acquired at an operating frequency of 400 MHz. Their triacylglycerol fatty acid, triacylglycerol hydrolysis product, and sterol and stanol contents were determined via intelligent frequency bucketing and electronic integration of selected resonances. Univariate analysis-of-variance, and multivariate ROC curve evaluations were conducted to determine the magnitude and statistical significance of analyte concentration differences between these two sample classifications. Further multivariate NMR-linked chemometrics analyses such as principal component, random forest and support vector machine classification analyses were also utilised for this purpose. Key Results: Multicomponent 1H NMR analysis demonstrated that EAV SFOs had significantly higher and lower contents of monounsaturated fatty acids (MUFAs) and polyunsaturated fatty acids (PUFAs), respectively, than those of refined SFOs. Furthermore, significantly higher concentrations of ‘health-friendly’, cholesterol-blocking sterols and stanols were also found in these virgin products. Major Conclusions: 1H NMR analysis provides much valuable molecular information regarding the composition and virginal status of SFOs. The high [MUFA]:[PUFA] content ratio of unrefined EAV SFO products renders them more suitable and safer for commercial or domestic deep-frying episodes than refined SFOs (MUFAs are much more resistant to thermally-induced peroxidation than PUFAs). These products also potentially offer valuable health benefits in view of their high natural sterol and stanol contents.en
dc.funderOther external funder (please detail below)en
dc.identifier.citationPercival, B., Savel, E., Ampem, G., Gibson, M., Edgar, M., Jafari, F., Woodason, K., Frederick, K., Wilson, P., Grootveld, M. (2019) Molecular composition of and potential health benefits offered by natural East African virgin sunflower oil products: A 400 MHz 1H NMR analysis study. International Journal of Nutrition, 3(3), pp. 22-43.en
dc.identifier.doihttps://doi.org/10.14302/issn.2379-7835.ijn-19-2677
dc.identifier.issn2379-7835
dc.identifier.urihttps://www.dora.dmu.ac.uk/handle/2086/17843
dc.language.isoenen
dc.peerreviewedYesen
dc.publisherOpen Access Publicationsen
dc.researchinstituteLeicester Institute for Pharmaceutical Innovation - From Molecules to Practice (LIPI)en
dc.subjectVirgin Sunflower Oilen
dc.subjectEast Africaen
dc.subject1H NMR Analysisen
dc.subjectNMR-Based Chemometrics Analysisen
dc.subjectTriacylglycerolsen
dc.subjectDiacylglycerols and Monacylglycerolsen
dc.subjectMonounsaturated Fatty Acidsen
dc.subjectPolyunsaturated Fatty Acidsen
dc.subjectSterols and Stanolsen
dc.subjectLipid Oxidation Productsen
dc.titleMolecular Composition of and Potential Health Benefits Offered by Natural East African Virgin Sunflower Oil Products: A 400 MHz 1H NMR Analysis Studyen
dc.typeArticleen

Files

License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
4.2 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Leicester School of Pharmacy