 Historically, crops like rapeseed that contained the glucosinolate-myrosinase system were deliberately bred to minimize glucosinolate content, since rapeseed in animal feed was proving toxic to livestock.The glucosinolate-myrosinase system has been investigated as a possible biofumigant to protect crops against pests.The potent glucosinolate hydrolysis products (GHPs) could be sprayed onto crops to deter herbivory.