Antioxidant activity of the methanolic extract of the newly generated vegetable, baemuchae (xBrassicoraphanus)

We investigated the radical scavenging activity and protective effects of the methanol extract (ME) and ferulic acid (FA) from baemuchae (xBrassicoraphanus) against oxidative stress in vitro and on a cellular system using LLC-PK1 renal epithelial cells. In vitro, ME and FA showed dose-dependent radical scavenging activity against 1,1-diphenyl-2-picrylhydrazyl and hydroxyl radicals. LLC-PK1 cells displayed decreased viability in response to nitric oxide-induced oxidative stress. However, ME and FA significantly increased LLC-PK1 cell viability in a dose-dependent manner. Based on HPLC/UV analysis, the FA content was higher in the shoot of baemuchae than in the root. The results of the present study suggest that baemuchae may be a promising source of antioxidants against oxidative stress induced by free radicals.