〔摘要〕 目的 研究黄精蒸制加工过程的抗氧化活力动态变化，探讨黄精九蒸九制的机理。方法 对比仿生提取和化学提取黄精样品的抗氧化活力，采用ABTS、FRAP和AAPH法测定不同蒸制次数黄精样品抗氧化活力动态变化。结果 仿生提取的抗氧化活力整体更强，最高是化学提取的2.97倍。抗氧化活力随着蒸制次数增加而增强。ABTS、FRAP和AAPH 3种方法的测定结果显示，黄精蒸制后抗氧化活力较鲜黄精分别增强了1.35、2.54和2.53倍。结论 仿生提取更能全面的代表黄精的抗氧化能力，抗氧化活力的增强是黄精炮制增效的一个很好解释。

    〔关键词〕 黄精;仿生提取;蒸制;抗氧化

    〔中图分类号〕R284.2;R285.5 〔文献标志码〕A 〔文章编号〕doi：10.3969/j.issn.1674-070X.2019.07.010

    〔Abstract〕 Objective To investigate the dynamic changes of antioxidant activity of Polygonati Rhizoma during the process of steaming and to explore the mechanism of nine-time steaming and nine-time processing of Polygonati Rhizoma. Methods Polygonati Rhizoma samples with different steaming times were extracted by biomimetic and chemical extraction. The antioxidant activity was determined by ABTS ......