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Detection of Virgin Olive Oil Adulteration Using Low Field Unilateral NMR

1
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing 400044, China
2
School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK
*
Author to whom correspondence should be addressed.
Sensors 2014, 14(2), 2028-2035; https://doi.org/10.3390/s140202028
Received: 29 November 2013 / Revised: 20 January 2014 / Accepted: 23 January 2014 / Published: 24 January 2014
(This article belongs to the Special Issue Magnetic Resonance Sensors)
The detection of adulteration in edible oils is a concern in the food industry, especially for the higher priced virgin olive oils. This article presents a low field unilateral nuclear magnetic resonance (NMR) method for the detection of the adulteration of virgin olive oil that can be performed through sealed bottles providing a non-destructive screening technique. Adulterations of an extra virgin olive oil with different percentages of sunflower oil and red palm oil were measured with a commercial unilateral instrument, the profile NMR-Mouse. The NMR signal was processed using a 2-dimensional Inverse Laplace transformation to analyze the transverse relaxation and self-diffusion behaviors of different oils. The obtained results demonstrated the feasibility of detecting adulterations of olive oil with percentages of at least 10% of sunflower and red palm oils. View Full-Text
Keywords: adulteration; olive oil; unilateral NMR Mouse; transverse relaxation; diffusion adulteration; olive oil; unilateral NMR Mouse; transverse relaxation; diffusion
MDPI and ACS Style

Xu, Z.; Morris, R.H.; Bencsik, M.; Newton, M.I. Detection of Virgin Olive Oil Adulteration Using Low Field Unilateral NMR. Sensors 2014, 14, 2028-2035.

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