流体动力式超声与槽式超声提取黄芩的比较

目的:比较两种超声发生器对化学反应的促进作用。方法:首先用碘释放测量法进行实验,分别用气哨式流体动力式超声发生器和槽式超声清洗仪处理碘化钾溶液,采用分光光度法测定碘化钾溶液的吸光度。随后分别用流体动力式超声与槽式超声提取黄芩,采用高效液相色谱法测定黄芩苷含量。结果:经流体动力式超声发生器和槽式超声清洗仪处理的碘化钾溶液的吸光度分别为0.990和0.498。以水为溶剂用流体动力式超声提取黄芩,黄芩苷含量显著高于槽式超声。结论:流体动力式发生器(每升能耗0.0156kwh)的空化效应高于槽式超声清洗仪(每升能耗0.0148kwh)。

Comparison of hydrodynamic acoustic generator and ultrasonic cleaner on the enhancing effect on extraction of baicalin from radis scutellarias etiaclisn

Objective:To compare the enhancing effect on chemical reaction of two different ultrasonic generators.Method:Iodine release method was used to study the state of cavitation, generated by a hydrodynamic acoustic generator and an ultrasonic cleaning machine. Baicalin was extracted from Radix Scutellariae by the hydrodynamic acoustic generator and the ultrasonic cleaner,respectively.The concentration of baicalin was determined by HPLC.Results:The absorbance value of KI solution,treated by hydrodynamic acoustic generator,was 0.990,while the absorbance treated by the ultrasonic cleaner was 0.498. The extraction percentage of baicalin from Radix Scutellariae using water as extracting solvent by hydrodynamic acoustic generator is much higher than that by the ultrasonic cleaner. Conclusion:Compared with the ultrasonic cleaner,the ultrasonic cavitation produced by the hydrodynamic acoustic generator showed higher strength.The energy consumption of hydrodynamic acoustic generator was 0.0156 kwh per litter,while the other one was 0.0148 kwh per litter.