| Abstract
| - Aminoethylcysteine ketimine decarboxylated dimer (simply named dimer) is a natural sulfur-containingtricyclic compound detected, until now, in human urine, bovine cerebellum, and human plasma.Recently, the antioxidant properties of this compound have been demonstrated. In this investigation,the presence of aminoethylcysteine ketimine decarboxylated dimer was identified in garlic, spinach,tomato, asparagus, aubergine, onion, pepper, and courgette. Identification of this compound in dietaryvegetables was performed using gas chromatography, high-performance liquid chromatography, andgas chromatography−mass spectrometry. Results from GC analysis range in the order of 10-4 μmolof dimer/g for all the tested vegetables. These results and the lack of a demonstrated biosyntheticpathway in humans might account for a dietary supply of this molecule. Keywords: Aminoethylcysteine ketimine decarboxylated dimer; dietary vegetables; antioxidant
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