Epicuticular wax components preserved in potsherds as chemical indicators of leafy vegetables in ancient diets

The determination of the leafy vegetable constituents of the diets of early societies is notoriously difficult using traditional archaeobotanical techniques. In an effort to provide a solution to this problem, a new approach, using gas chromatography (GC) and GC/mass spectrometry (GC/MS), has been adopted to detect the presence of preserved epicuticular leaf wax components absorbed in potsherds. The characteristic compounds identified can serve as chemotaxonomic indicators of the vegetables prepared in vessels during their usage.