【摘要】 研究了香辛料白芷中活性物的提取工艺,试验结果表明:以体积分数75%乙醇为溶剂,白芷粉碎度为20目,固液比保持1 g∶10 mL,回流萃取1h,提取2次,能有效提取出白芷中活性成分。用邻苯三酚自氧化法和亚硝基R盐-Co3+褪色法对白芷提取物进行了自由基清除、抗氧化性能的研究。发现白芷提取物能有效清除自由基,当质量浓度为1.0×10-3g/mL时,提取物对过氧阴离子自由基(O2-.)和羟基自由基(.OH)的清除率分别为23.40%和69.35%,可作为一种性能良好的新型天然清除自由基、抗氧化剂,应用于食品和药品中。更多还原

【Abstract】 In this study,the extraction of natural antioxidant from the root of Angelica dahuica was carefully investigated.The effects of those extract on oxygen free radical scavenging were determined by pyrogallol autoxidation system and H2O2 oxidiative system.It was found that the scavenging percentage of O2-·and·OH free radical can reach at 23.40% and 69.35%,respectively.The results presented here suggested that the extracts of Angelica dahuica maybe as a potential multifunctional antioxidant in foods and drugs.更多还原