Abstract
The feasibility of time-domain NMR curve-fitting methodology for the quantitative determination of TG blend phase compositions was investigated. By studying a range of TG in their different crystal forms, it was shown that the transverse NMR relaxation characteristics of TG differ for the respective crystal polymorphs {α,β,β′}. This enables the TG polymorphism in fat blends to be quantitatively determined by curve fitting. If a liquid phase is present in the blend, curve fitting is able to determine the solid fat content, and the results compare well with those of the accepted NMR methods. The curve-fit method is less hindered by some of the disadvantages of these accepted methods, such as the use of a calibration factor.
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van Duynhoven, J., Dubourg, I., Goudappel, GJ. et al. Determination of MG and TG phase composition by time-domain NMR. J Amer Oil Chem Soc 79, 383–388 (2002). https://doi.org/10.1007/s11746-002-0493-7
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DOI: https://doi.org/10.1007/s11746-002-0493-7