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Other spectrometers: NMR...

Bruker BioSpin

  • NMR spectrometer / laboratory / process / industrial

minispec mq one Fat Analyzer

Article: 00103060

NMR spectrometer / laboratory / process / industrial

The analysis of total fat and moisture by TD-NMR is as easy as inserting the non-grinded sample into an empty tube, weighing the sample and insertion of the sample tube into the minispec machine. A couple of seconds later accurate and reliable results for percent total fat and moisture will be displayed.

This traditional TD-NMR standard method works fine for a big range of samples, like food and feed, seeds, press cake and residues, single seeds and corn, but also for medical powders and tablets, chemicals like sulfur, polymers and others.

In the food area chocolate has to be mentioned in first place, as well as milk or baking powders. But this NMR method is also applied to crisps / chips and other non-homogenous samples. The NMR system screens all the hydrogen nuclei, on the surface but also in the centre of the sample and everywhere. The moisture content in all those samples should not exceed a certain limit, i.e. moisture should be present in the sample as bound water. For samples exhibiting high water content, another NMR pulse sequence and a different data evaluation (multivariate analysis) has to be applied.

The minispec standard method assumes that all fat protons exhibit an NMR relaxation time longer than that of the bound water. This means that all fat that should be detected must be liquid at the time when the sample is measured. As the fat of a chocolate sample is partly crystalline at temperatures below 40°C, two NMR measurements, one at the temperature of interest and one in a state where all fat is melted, can be used to determine the Solid Fat Content of a chocolate sample at the temperature of interest.

Specifications

  • Type: NMR
  • Domain: laboratory, process, industrial, R&D, for food analysis, for analysis, for the food industry, oil-in-water, fat analysis, for the food industry
  • Other characteristics: benchtop

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