超声波甘草酸提取动力学模型

为超声波甘草酸的提取提供理论依据,以超声波强化机理为基础,对现有的中草药浸取动力学方程进行改进,提出了一种含超声功率、超声频率和提取温度的超声波动力学模型。采用Origin7.5软件中的功能模型来预测动力学模型参数即甘草酸平衡浓度和提取速率系数,建立了用于预测甘草酸浓度随超声功率、超声频率、提取温度和时间变化的动力学模型。数值仿真结果显示,模型预测的最大相对误差仅为8.74%,表明建立的动力学模型具有较好的拟合度,因此对超声波甘草酸提取工业具有一定的理论参考价值。

Kinetic model of ultrasonic extraction of glycyrrhizic acid

To provide a theoretical basis for the ultrasonic extraction of glycyrrhizic acid, the existing Chinese herbal medicine leaching kinetics equation is improved based on the ultrasonic enhancement mechanism, and an ultrasonic kinetic model including ultrasonic power, frequency and temperature is proposed. The functional model of Origin7.5 software is used to predict the parameters of kinetic model, namely, the equilibrium concentration of glycyrrhizin and the extraction rate coefficient. A kinetic model was established for predicting the concentration of glycyrrhizic acid as a function of ultrasonic power, frequency, temperature and time. The numerical simulation results show that the maximum relative error of the model prediction is only 8.74%, indicating that the established kinetic model has a good fitting degree. Therefore, it has certain theoretical reference value for the ultrasonic glycyrrhizic acid extraction industry.