Change in Glucosinolates Content during Growth and Postharvest Cold Storage of Baemoochae Plant (XBrassicoraphanus)

Baemoochae, an intergenic breed between Kimchi cabbage (Brassica napa L.) and radish (Raphanus sativus L.) has been lately known to be an excellent functional food due to phytochemicals such as glucosinolate (GSL) and polyphenolic compounds. In order to examine distribution of GSL in Baemoochae during their growth and postharvest storage, desulfo-GSLs analysis cultivars of Baemoochae ‘BB#1’ was conducted using HPLC and UPLC-ESI-MS. Total 8 GSLs (progoitrin, glucoraphenin, glucoalyssin, gluconapin, glucobrassicanapin, glucoraphasatin, glucobrassicin, neoglucobrassicin) were identified, and glucoraphasatin was the most abundant GSL in Baemoochae in both leaves and root. The highest amount of GSL in root was detected at 10 weeks after planting in ‘BB#1’ showing 467.4mg·100g fresh mass. During cold storage of Baemoochae plant, a sharp decrease in GSL in leaf tissue and a rather steady decline in root tissue were manifested. There was a 30% reduction of the GSL contents in roots during 8 weeks storage, werease GSK in leaf tissue declined from 110.0 to 47.2mg·100g fresh mass during 4 weeks. The present study suggests that utilization of Baemoochae as a vegetable crop can be determined based on their GSL content during growth and storage. The GSL distributed much higher in root tissue than leaf suggesting as economical significance.