目的 优化超声辅助提取无子刺梨总皂苷的条件，以提高总皂苷的提取效率。方法 通过单因素试验评估乙醇体积分数、超声时间、料液比和提取次数对总皂苷得率的影响，结合响应面法的中心组合实验设计，确定其最佳提取条件。结果 在超声时间为40 min、乙醇体积分数为60%、料液比(g/mL)为1∶30、提取4次的条件下，总皂苷的得率为9.15%，与模型预测值9.18%较为接近，表明了响应面法优化无子刺梨总皂苷的超声辅助提取方法的可行性。结论 此研究为无子刺梨资源在食品贮藏、医药等方面的进一步开发利用提供参考依据。

The work aims to optimize the extraction condition for total saponins from Rosa sterilis by ultrasonic-assisted method, so as to improve the extraction efficiency. The effects of ethanol volume fraction, ultrasonic time, material-liquid ratio, and extraction number on the extraction yield of total saponins were investigated by single factor experiment method, and then the central composite design of response surface methodology was carried out to determine the optimum extraction conditions. The optimal extraction conditions were defined as ultrasonic time of 40 min, ethanol volume fraction of 60%, material-liquid ratio of 1∶30 g/mL, and extraction number of 4 times. Under these optimal conditions, the actual extraction yield of total saponins was 9.15%, which was almost equal to the predicted value of 9.18%. These results indicated that the response surface methodology was feasible to optimize the ultrasonic-assisted extraction conditions of total saponins from Rosa sterilis. The work provides reference for the exploitation and utilization of Rosa sterilis in food preservation and medicine.