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A simple liquid chromatography-coordination ion spray-mass spectrometry method (LC-CIS-MS/MS) for analysis of allicin in Allium species extracts has been developed. Allicin was chromatographic separated under isocratic conditions using a mobile phase of 1 mM ammonium acetate. A silver nitrate solution was post-column added to enhance the allicin detection by formation an ionized coordinated complex. The overall time of one analysis was 1 min. The detection of allicin was performed in multiple reaction monitoring mode using an ion trap mass spectrometer with electrospray positive ionization. The linearity domain was established between 18 and 864 µg/mL. Inter-day accuracy and precision were less than 11% and 2.2%, respectively.

Keywords: allicin, Allium extracts, liquid chromatography, coordination mass spectrometry