Fig. 1. Structural modification of resveratrol using gamma irradiation. A) The HPLC chromatogram of intact resveratrol (intact-Res) and gamma-irradiated resveratrol (γ-Res) with a dose of 50 kGy in methanol. B) The chromatogram of the fractionated γ-Res. C) The mass spectrum of γ-Res. D) Chemical structure of γ-Res.