High-throughput screening of argan oil composition and authenticity using benchtop 1H NMR

Yvonne Gunning; Alex J. Jackson; Joshua Colmer; Fouad Taous; Mark Philo; Rachel M. Brignall; Tibari El Ghali; Marianne Defernez; E. Kate Kemsley

doi:10.1002/mrc.5023

High-throughput screening of argan oil composition and authenticity using benchtop ¹H NMR

Yvonne Gunning, Alex J. Jackson, Joshua Colmer, Fouad Taous, Mark Philo, Rachel M. Brignall, Tibari El Ghali, Marianne Defernez, E. Kate Kemsley

School of Biological Sciences

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

22 Downloads (Pure)

Abstract

We use 60-MHz benchtop nuclear magnetic resonance (NMR) to acquire(1)H spectra from argan oils of assured origin. We show that the low-field NMR spectrum of neat oil contains sufficient information to make estimates of compositional parameters and to inform on the presence of minor compounds. A screening method for quality and authenticity is presented based on nearest-neighbour outlier detection. A variety of oil types are used to challenge the method. In a survey of retail-purchased oils, several instances of fraud were found.

Original language	English
Pages (from-to)	1177-1186
Number of pages	10
Journal	Magnetic Resonance in Chemistry
Volume	58
Issue number	12
Early online date	27 Mar 2020
DOIs	https://doi.org/10.1002/mrc.5023
Publication status	Published - Dec 2020

Keywords

argan oil
authenticity
benchtop NMR spectroscopy
edible oil
proton NMR
triglyceride
unsaturates
FATTY-ACID-COMPOSITION
H-1-NMR
IDENTIFICATION
SPECTROSCOPY
STABILITY

Access to Document

10.1002/mrc.5023Licence: CC BY

Published_VersionFinal published version, 1.39 MBLicence: CC BY

Cite this

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title = "High-throughput screening of argan oil composition and authenticity using benchtop 1H NMR",

abstract = "We use 60-MHz benchtop nuclear magnetic resonance (NMR) to acquire(1)H spectra from argan oils of assured origin. We show that the low-field NMR spectrum of neat oil contains sufficient information to make estimates of compositional parameters and to inform on the presence of minor compounds. A screening method for quality and authenticity is presented based on nearest-neighbour outlier detection. A variety of oil types are used to challenge the method. In a survey of retail-purchased oils, several instances of fraud were found.",

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year = "2020",

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language = "English",

volume = "58",

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journal = "Magnetic Resonance in Chemistry",

issn = "0749-1581",

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AU - Gunning, Yvonne

AU - Jackson, Alex J.

AU - Colmer, Joshua

AU - Taous, Fouad

AU - Philo, Mark

AU - Brignall, Rachel M.

AU - El Ghali, Tibari

AU - Defernez, Marianne

AU - Kemsley, E. Kate

PY - 2020/12

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KW - argan oil

KW - authenticity

KW - benchtop NMR spectroscopy

KW - edible oil

KW - proton NMR

KW - triglyceride

KW - unsaturates

KW - FATTY-ACID-COMPOSITION

KW - H-1-NMR

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KW - SPECTROSCOPY

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