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 m L/g,乙醇体积分数为50%,提取温度为57℃,提取时间5 min,在此条...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 m L/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。展开更多
It takes flavonoid extraction rate as indicator and adopts the method of orthogonal experiment to study process of total flavonoid in Trollius chinensis through ultrasonic wave assisted extraction, microwave assisted ...It takes flavonoid extraction rate as indicator and adopts the method of orthogonal experiment to study process of total flavonoid in Trollius chinensis through ultrasonic wave assisted extraction, microwave assisted extraction and backflow extraction, as well as optimization of process parameter. The result indicates that in terms of extraction efficiency, microwave extraction method is better than ultrasonic radiation extraction method, which is better than backflow extraction method. Optimal process parameter through backflow extraction is: backflow temperature 60℃, fluid material ratio 1:20, ethanol density 65%, backflow time 60min; optimal process parameter through ultrasonic wave assisted extraction is: ultrasonic radiation temperature 70℃, fluid material ratio 1:20, ethanol density 65%, ultrasonic wave radiation time 45rain; optimal process parameter of microwave assisted extraction is: microwave radiation temperature 60℃, fluid material ratio 1:20, ethanol density 75%, microwave radiation time 45min.展开更多
文摘以龙眼壳为原料,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 m L/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。
文摘It takes flavonoid extraction rate as indicator and adopts the method of orthogonal experiment to study process of total flavonoid in Trollius chinensis through ultrasonic wave assisted extraction, microwave assisted extraction and backflow extraction, as well as optimization of process parameter. The result indicates that in terms of extraction efficiency, microwave extraction method is better than ultrasonic radiation extraction method, which is better than backflow extraction method. Optimal process parameter through backflow extraction is: backflow temperature 60℃, fluid material ratio 1:20, ethanol density 65%, backflow time 60min; optimal process parameter through ultrasonic wave assisted extraction is: ultrasonic radiation temperature 70℃, fluid material ratio 1:20, ethanol density 65%, ultrasonic wave radiation time 45rain; optimal process parameter of microwave assisted extraction is: microwave radiation temperature 60℃, fluid material ratio 1:20, ethanol density 75%, microwave radiation time 45min.