本文利用甲醇溶剂对酿酒葡萄皮渣进行浸提,得到白藜芦醇粗提物。粗提物通过硅胶柱层析进行纯化。然后,研究了白藜芦醇的氧自由基、超氧阴离子自由基、羟自由基、DPPH自由基的清除能力。结果显示:白藜芦醇具有很强的自由基清除能力和抗氧化能力,并且随着浓度的增加,抗氧化能力增强。 In this paper, the use of methanol solvent on the extraction of wine grape dregs to obtain a crude extract of resveratrol. The crude extract was purified by silica gel column chromatography. Then, the scavenging ability of resveratrol to oxygen radicals, superoxide anion radicals, hydroxyl radicals and DPPH radicals was studied. The results showed that resveratrol had strong free radical scavenging ability and antioxidant capacity, and as the concentration increased, the antioxidant capacity increased.