ResourceSpectroscopy
Pulsar<sup>TM</sup> Benchtop NMR for Food Authenticity Screening
15 May 2014Recent advances in benchtop Nuclear Magnetic Resonance (NMR) mean that it is suitable as a fast and easy technique for assessing suspected edible oil contamination/adulteration and meat speciation. This application note describes how the Pulsar™ system can be used to discriminate between different oil types and provide quantitative information for mixtures. The NMR spectra of triglycerides contain valuable information indicating the particular meat species.
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NMR and EPR SpectroscopyNuclear magnetic resonance (NMR) spectroscopy is used to resolve the local chemical environment of atomic nuclei with spin, revealing information on molecular structure, dynamic processes and chemical reactions of organic molecules, from proteins to synthetics. Electron paramagnetic resonance (EPR) also known as electron spin resonance (ESR) spectroscopy is used to detect and quantify paramagnetic species in a sample, including free radicals as transition metal ions. By immersing the sample in a strong magnetic field, both NMR and EPR spectrometers probe the sample with either radio waves or microwaves respectively. A range of benchtop, solid-state and time domain NMR spectrometers & EPR spectrometers are available, as well as NMR tubes, NMR solvents, software, coils, and magnets. Find the best NMR & EPR equipment in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.MeatSpeciationFood FraudFood adulteration refers to food when it has been has been altered unlawfully with the addition of another lower commodity food product to increase quantity. The 2013 European horsemeat scandal saw the adulteration of beef products with the addition of horse meat.