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Intact triacylglycerol profiles of fats and meats via thermal imprinting easy ambient sonic-spray ionization mass spectrometry

Abstract

Thermal imprinting (TI) on a paper surface, using minimal solvent amounts, followed by direct analysisof the triacylglycerols (TAG) content via easy ambient sonic-spray ionization mass spectrometry(EASI-MS) is shown to provide a fast protocol to analyze TAG in meats and fats. The technique issimple, fast and eco-friendly requiring no hydrolysis, derivatization or chromatographic separation.The entire TI-EASI-MS protocol is performed in a few minutes and with minimal sample handling andsolvent consumption. The TAG profiles obtained via TI-EASI-MS are shown to be quite similar tothose obtained using GC and MALDI-MS analyses, and the imprinting and mailing of the imprintedpaper in a sealed plastic bag is proposed for remote TI-EASI-MS analysis of meat and fat samples. (AU)

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