Thiocyanates are volatile flavor compounds of several Brassica species of vegetables wherein they are formed from their precursors, glucosinolates. The latter are thioethers consisting of a β-thioglucose moiety, whose enzymatic hydrolysis followed by rearrangement of the alkyl group in the aglycone moiety results in the formation of thiocyanates. [ 1 1. (a) Fenwick , GR ; Heaney , RK ; Mullin , WJ Glucosinolates and their breakdown products in food and food plants . ...