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%).
Original language | English |
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Pages (from-to) | 490-499 |
Number of pages | 10 |
Journal | LWT |
Volume | 111 |
Early online date | 14 May 2019 |
DOIs | |
Publication status | Published - Aug 2019 |
Keywords
- NMR
- Authentication
- Cold pressed rapeseed oil
- Chemometrics
- Fraud
- VIRGIN OLIVE OIL
- VEGETABLE-OILS
- RAPID DETECTION
- EDIBLE OILS
- AUTHENTICATION
- QUANTIFICATION
- QUALITY
- CANOLA
- ATR