响应面法优化超声波-微波协同提取龙眼壳总黄酮

Optimization of ultrasonic microwave synergistic extraction of total flavonoids from longan shell by response surface method

摘要: 以龙眼壳为原料,研究了超声波-微波协同法对龙眼壳中总黄酮提取率的影响,并采用响应面分析法优化提取条件。结果表明,最佳提取条件为:超声波功率为100 W,液料比为29.2：1 mL/g,乙醇体积分数为50%,提取温度为57 ℃,提取时间5 min,在此条件下,龙眼壳总黄酮的提取率为3.06%,与超声或微波辅助提取法相比,该方法更省时,总黄酮提取率更高,适用于龙眼壳黄酮类物质的提取。

Abstract: The effect of the ultrasound-microwave synergistic method on the extraction ratio of total flavone from longan shell was studied and the extraction conditions were optimized by using response surface analysis method. The results showed that the optimum conditions for extracting total flavone were:ultrasonic power 100 W, ratio of liquid to solid material 29.2:1 mL/g, ethanol concentration 50%, extraction temperature 57℃, and extraction time 5 min. Under this condition, the extraction rate of total flavone was 3.06%. Compared with ultrasound-or microwave-extraction method, this one was more timesaving and had higher extraction rate, which was suitable for extracting flavonoids from longan shell.