为了优化超声辅助提取壶瓶碎米荠多糖的工艺,根据Fick第二定律公式推导出超声波辅助提取壶瓶碎米荠多糖的动力学模型,并采用超声波提取壶瓶碎米荠多糖,不同条件下进行实验求得相应的动力学方程。研究结果表明,动力学模型与实验数据推论得出的动力学一般方程和指数方程具有良好的相关性,相关系数均达到0.9,并推算出了相应的速率常数、活化能、萃余率等动力学相关参数。温度在353 K时,功率在120~300 W时,速率常数随着功率增加而增大,半衰期逐渐减小;功率固定在240 W时,温度在295~353 K时,速率常数随着温度的增加而增大,半衰期逐渐减小。研究结果为壶瓶碎米荠多糖提取工艺优化和深入的理论研究提供了一定的依据和技术支持。
To optimize the ultrasonic assisted extraction technology of Cardamine hupingshanensis polysaccharide, the kinetic model of ultrasonic assisted extraction of Cardamine hupingshanensis polysaccharide was deduced according to Fick's second law formula and used the ultrasonic extract of Cardamine hupingshanensis polysaccharide. The corresponding kinetic equation was obtained by experiments under different conditions. The results showed that the general kinetic equation and exponential equation deduced from the kinetic model and the experimental data had a good correlation and the correlation coefficients were all up to 0.9. The corresponding rate constant, activation energy, residual extraction rate and other kinetic related parameters were also calculated .When the temperature was 353 K, the power was in the range of 120-300 W, the rate constant increased with the power increases, and the half-life gradually decreased. When the power was fixed at 240 W and the temperature was in the range of 295-353 K, the rate constant increased with the temperature increase and the half-life gradually decreased. The results provide a certain basis and technical support for the optimization of the extraction process and in-depth theoretical research of Cardamine hupingshanensis polysaccharide.
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