This study aimed to optimize the ultrasonic treatment parameters for total flavonoids extracted from lotus power by single factor tests and response surface methodology. Effects of liquid-solid ratios, ethanol con-centration, ultrasonic treatment temperature and time on extraction yield of total flavonoids were studied. Re-sults showed that the optimum ultrasonic assisted extraction parameters were liquid-solid ratios of 18.5(mL/g), ethanol concentration of 82%, ultrasonic treatment temperature of 74℃, extraction time of 53 min under ultra-sonic power 250 W. Extraction yield of total flavonoids achieved 1.6582%under the optimum parameters.%采用超声波辅助提取荷花粉中的总黄酮,利用单因素试验和响应面方法优化总黄酮的最佳提取工艺,研究液固比、乙醇浓度、超声处理温度和提取时间对总黄酮提取率的影响.结果表明,当超声波功率250 W条件下,超声波辅助提取荷花粉总黄酮最佳工艺参数为液固比18.5(mL/g),乙醇浓度82%,提取温度74℃,提取时间53 min,总黄酮的提取率可达1.6582%.
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