Detection of Virgin Olive Oil Adulteration Using Low Field Unilateral NMR

Sensors

Zheng Xu¹  Robert H. Morris²  Martin Bencsik² 

[1] State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing 400044, China;School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, NG11 8NS, UK; E-Mails:

关键词: adulteration;    olive oil;    unilateral NMR Mouse;    transverse relaxation;    diffusion;   

DOI  :  10.3390/s140202028

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.