Componential analysis of pepper of various origins using DART-MS using ultra-fast polarity switching

DART (Direct Analysis in Real Time), a direct atmospheric pressure ionization source, is capable of analyzing food samples with little or no sample preparation. Time of flight mass spectrometers, which have been a common choice to interface DART, were not suitable in carrying out simultaneous detection of compounds with different polarities from the same sample due to its limitation in switching between positive and negative ion modes in terms of time required to do so,.
Analysis of different parts of pepper (exodermis, endodermis and seeds) along with olive oil and soy source of different types and origins were carried out using the DART combined with a mass spectrometer with ultra-fast polarity switching capability to conduct multivariable analysis.