Effects of Wet-Blending on Detection of Melamine in Spray-Dried Lactose

Milk 0404 agricultural biotechnology Triazines Animals Cattle Food Contamination Lactose 04 agricultural and veterinary sciences Powders 0405 other agricultural sciences Food Analysis
DOI: 10.1021/acs.jafc.7b00834 Publication Date: 2017-05-24T22:58:07Z
ABSTRACT
During the development of rapid screening methods to detect economic adulteration, spray-dried milk powders prepared by dissolving melamine in liquid exhibited an unexpected loss characteristic features near-infrared (NIR) and Raman spectra. To further characterize this "wet-blending" phenomenon, lactose samples were produced as a simplified model investigated NIR spectroscopy, proton nuclear magnetic resonance (1H NMR), direct analysis real time Fourier transform mass spectrometry (DART-FTMS). In contrast dry-blended samples, bands spectra disappeared or shifted wet-blended lactose-melamine samples. Subtle shifts 1H NMR between wet- indicated differences hydrogen-bonding status. Qualitative DART-FTMS detected greater relative abundance condensation product ions which supported hypothesis that wet-blending facilitates early Maillard reactions Collectively, these data formation weak, H bonded complexes labile, reaction products contribute spectral observed powder These results have implications for future evaluations adulterated emphasize important role sample preparation on adulterant detection.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (34)
CITATIONS (13)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....