Selenoglucosinolates and their metabolites produced in Brassica spp. fertilised with sodium selenate

► Broccoli, cauliflower and forage rape were supplemented with sodium selenate. ► Selenium incorporation was into glucosinolates via seleno amino acids. ► Myrosinase hydrolysis of selenoglucosinolates produced seleno-aglycones. ► Selenium-containing aglycones were methylselenoalkyl nitriles and isothiocyanates. ► A possible route to the increased dietary intake of selenium.