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Detection of virgin olive oil adulteration using low field unilateral NMR.

Xu Z, Morris RH, Bencsik M, Newton MI - Sensors (Basel) (2014)

Bottom Line: The detection of adulteration in edible oils is a concern in the food industry, especially for the higher priced virgin olive oils.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 obtained results demonstrated the feasibility of detecting adulterations of olive oil with percentages of at least 10% of sunflower and red palm oils.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing 400044, China. pinexz@163.com.

ABSTRACT
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.

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Superimposition of D-T2 distributions of sunflower and extra virgin olive mixed oils. From top to bottom, the peaks correspond to pure extra virgin olive oil, 10% sunflower oil, 20% sunflower oil and pure sunflower oil, respectively.
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f3-sensors-14-02028: Superimposition of D-T2 distributions of sunflower and extra virgin olive mixed oils. From top to bottom, the peaks correspond to pure extra virgin olive oil, 10% sunflower oil, 20% sunflower oil and pure sunflower oil, respectively.

Mentions: Two mixtures of sunflower and extra virgin olive oils, with sunflower concentrations at 10% and 20% by volume, pure sunflower oil and pure extra virgin olive oil, were measured. The D-T2 distributions of the different oils are plotted in Figure 3.


Detection of virgin olive oil adulteration using low field unilateral NMR.

Xu Z, Morris RH, Bencsik M, Newton MI - Sensors (Basel) (2014)

Superimposition of D-T2 distributions of sunflower and extra virgin olive mixed oils. From top to bottom, the peaks correspond to pure extra virgin olive oil, 10% sunflower oil, 20% sunflower oil and pure sunflower oil, respectively.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3958213&req=5

f3-sensors-14-02028: Superimposition of D-T2 distributions of sunflower and extra virgin olive mixed oils. From top to bottom, the peaks correspond to pure extra virgin olive oil, 10% sunflower oil, 20% sunflower oil and pure sunflower oil, respectively.
Mentions: Two mixtures of sunflower and extra virgin olive oils, with sunflower concentrations at 10% and 20% by volume, pure sunflower oil and pure extra virgin olive oil, were measured. The D-T2 distributions of the different oils are plotted in Figure 3.

Bottom Line: The detection of adulteration in edible oils is a concern in the food industry, especially for the higher priced virgin olive oils.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 obtained results demonstrated the feasibility of detecting adulterations of olive oil with percentages of at least 10% of sunflower and red palm oils.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazhengjie, Shapingba, Chongqing 400044, China. pinexz@163.com.

ABSTRACT
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.

Show MeSH
Related in: MedlinePlus