废弃烤烟叶绿原酸提取的动力学分析

目的 通过仿真模型复现烟叶绿原酸提取过程的含量变化规律。方法 基于天然药物提取过程中的动力学数学模型；建立低次烟叶绿原酸提取动力学方程在matlab平台的simulink仿真框图模型，并通过实验的方法确定模型参数。结果 运行仿真框图模型获得预测提取数据的曲线。通过在50℃、60℃、70℃三个温度梯度下，测定对应时间下的提取浓度，验证了仿真模型的准确性。结论 仿真模型可以在不同温度及不同时刻下，给出提取过程中绿原酸含量的大致变化规律，为绿原酸的提取工艺研究提供参考依据。

Study on model of chlorogenic acid extraction from abandoned flue-cured tobacco leaves

Objective The content variation of of chlorogenic acid in tobacco leaves was reproduced by simulation model.Methods In this paper, the extraction kinetics of chlorogenic acid was modeled to discuss the affecting factors of temperature and time. Firstly, the sinulink model of chlorogenic acid extraction kinetics in Matlab was established, and then the parameters of the model were determined by experiments.Results The predicted extraction data curve was obtained by running the simulation model. The accuracy of the simulation model was verified by measuring the extraction concentration at the corresponding time under the three temperature gradients of 50℃, 60℃ and 70℃.Conclusion The simulation model can give a roughly changing law of chlorogenic acid content in the extraction process at different temperatures and at different times, to provide a reference for the study of chlorogenic acid extraction process.