McDowell, Daniel, Defernez, Marianne, Kemsley, E. Kate, Elliott, Christopher T. and Koidis, Anastasios (2019) Low vs high field 1h NMR spectroscopy for the detection of adulteration of cold pressed rapeseed oil with refined oils. LWT, 111. pp. 490-499. ISSN 0023-6438

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Abstract

Cold pressed rapeseed oil (CPRO) is a relatively recent development in rapeseed processing, which produces a quality product with a high market value. High field NMR (400 MHz) is a well-established tool in food analysis, while low-field NMR (60 MHz) is much less studied. This study aims to establish the effectiveness of both techniques in identifying binary adulteration in CPRO. Three adulteration scenarios were investigated: a) CPRO and refined rapeseed oil (RRO); b) CPRO and refined sunflower oil (RSO); and c) CPRO and RRO or RSO. A range of classification techniques were trialled as well as partial least squares regression to gauge predictive quantification performance. The 400 MHz NMR achieved classification rates of 100% in the scenarios with a single adulterant, and 93% in the multiple adulterant scenario. The 60 MHz NMR produced lower but still encouraging classification rates (RSO 92%; RRO 85%; both RRO and RSO 87%).

Item Type:	Article
Uncontrolled Keywords:	nmr,authentication,cold pressed rapeseed oil,chemometrics,fraud,virgin olive oil,vegetable-oils,rapid detection,edible oils,authentication,quantification,quality,canola,atr
Faculty \ School:	Faculty of Science > School of Chemistry
Depositing User:	LivePure Connector
Date Deposited:	27 Oct 2020 01:07
Last Modified:	06 Jan 2021 00:57
URI:	https://ueaeprints.uea.ac.uk/id/eprint/77440
DOI:	10.1016/j.lwt.2019.05.065

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