Glucosinolate Distribution in Aerial Parts of Degenia velebitica

The glucosinolates present in the leaf, stem, and seed extracts of Degenia velebitica ( Degen ) Hayek were characterized and quantified according to the ISO 9167–1 method, which is based on the HPLC analysis of desulfoglucosinolates. The stems contained glucoalyssin ( 3a ) as the major compound as well as glucoberteroin ( 1a ) and glucoaubrietin ( 4a ). The leaves contained three glucosinolates, the major one being 3a , followed by glucobrassicanapin ( 2a ) and 1a . Glucoberteroin ( 1a ) was the major glucosinolate in the seeds, along with the two minor glucosinolates 3a and glucoerucin ( 5a ). The content of 1a in the whole, non‐defatted seeds amounted to 4% ( w / w ). The compound was characterized as its desulfo counterpart by spectroscopic techniques.