中文摘要：

从 Pueraria lobata (Willd ) 的茎的 isoflavones 的超声地帮助的抽取 Ohwi 与一台超声的提取仪器被执行了(20kHz，电力输入到在 0 的变换器—650W ) 。抽取收益上的电力输入和抽取时间的影响在水里被调查， n-butanol，并且 95%( 由卷) 并且 50%( 由卷) 乙醇水的答案。试验性的结果显示全部的 isoflavones 的收益比从常规抽取获得的那些在超声地帮助的抽取是更高的。而且，一个数学模型被建议由介绍电力输入索引超声紧张，帮助了抽取描述超声的联盟者的行为。模型计算在对试验性的数据的好同意，这被发现。

英文摘要：

Ultrasonically assisted extraction of isoflavones from the stem of Pueraria lobata （Willd.） Ohwi has been carried out with an ultrasonic extracting apparatus （20kHz, electrical power input to the transducer in 0-650W）. The influence of the electrical power input and extraction time on the＇extraction yield is investigated in water, n-butanol, and 95% （by volume） and 50% （by volume） ethanol aqueous solution. The experimental results indicate that the yields of total isoflavones are higher in ultrasonically assisted extraction than those obtained from con-ventional extraction.Moreover,a mathematical model is proposed,by introducing the electrical power input to index the ultrsound intensity,to describe the behavior of ultrasonically assisted extraction.It is found that the model calcuations are in good agreement with the experimental data.