Antimicrobial volatile glucosinolate autolysis products from Hornungia petraea (L.) Rchb. (Brassicaceae)

► First analysis of Hornungia petraea glucosinolate (GLS) autolysis metabolites. ► The structure and identity of the detected GLS products were confirmed by synthesis. ► Antimicrobial assay suggests that the autolysis products serve as defense metabolites. ► High antibacterial activity of the tested isothiocyanates was shown against Sarcina lutea. ► Isothiocyanates also show an antifungal effect against Aspergillus fumigatus and Candida albicans.