Response surface methodology was applied to optimize the ultrasonic extraction of polyphenols from chestnut shels. In order to establish a method for the separation of phenolic antioxidants from crude polyphenol extract, the static adsorption and desorption of phenolics on macro adsorption resin were kineticaly studied and the optimum conditions for static adsorption and desorption were explored. Besides, polyphenols obtained from chestnut shels by different methods were tested for DPPH radical scavenging capacity and Fe3+ reducing power. Ethanol concentration and ultrasonic power were identified as main factors that influence extraction efficiency. The optimum conditions for the ultrasonic extraction of polyphenols from chestnut shels were found to be three extraction cycles with 43% ethanol at a solid-to-solvent ratio of 1:18.5 (g/mL) for 17.5 min with an ultrasonic power of 305 W. Under these conditions, the extraction efficiency of polyphenols was 2.86 g/100 g. LX-17 resin was found to be the best resin for the purification of phenolics from chestnut shels and the optimum purification conditions were determined as adsorption at 25 ℃ for 1.5 h folowed by desorption with 50% ethanol at 20 ℃ for 4 h. Phenolics with stronger DPPH radical scavenging activity and reducing power from chestnut shels were obtained using ultrasonic extraction than reflux extraction. The antioxidant activity of crude polyphenol extract was improved after macroporous resin purification.%采用响应面法优化超声提取板栗壳多酚的工艺条件，研究大孔树脂对板栗壳多酚的静态吸附解吸动力学和最适静态吸附解吸工艺条件，评价不同方法得到的板栗壳多酚对DPPH自由基的清除能力及对Fe3+的还原能力。结果表明，乙醇体积分数及超声功率是影响板栗壳酚类物质提取效果的主要因素；超声提取板栗壳多酚的最佳条件为：乙醇体积分数43%，料液比1：18.5(g/mL)，提取时间17.5min，提取功率305W、提取次数为3次，在此最优工艺条件下板栗壳多酚提取得率为2.86g/100g；大孔树脂纯化板栗壳多酚的最适工艺条件为：LX-17型树脂，于25℃吸附1.5h，以体积分数50%乙醇为解吸剂，于20℃解吸4h；超声提取的板栗壳多酚对DPPH自由基的清除能力及对Fe3+的还原能力均优于回流法，大孔树脂处理能提高板栗壳多酚提取物的抗氧化活性。
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