抄録
We isolated antioxidative compounds from ginger (Zingiber officinale Roscoe) based on the inhibitory activity toward lipid peroxidation of a rat brain homogenate which has been proposed to mimic the tissue damage by free radicals. The structures of these antioxidative compounds were determined by EIMS and NMR spectral data 1D (1H-and 13C-NMR) and 2D (1H-1H COSY, HMQC and HMBC) to be paradol, curcumin, gingerol, hexahydrocurcumin, gingereron A and [4] -gingerol. Freeze-dried ginger powder was heat treated by boiling and frying, and the change in the antioxidative activity was examined. The heat treatment had no effect on the antioxidative activity.
