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目的:考察微波干燥对舒胸片方提取物有效成分的影响及传质模型的研究。方法:研究了不同微波功率及物料装载量等因素对舒胸片方中有效成分阿魏酸及羟基红花黄色素A的干燥转移率的影响;根据Fick第二定律,采用Origin 7.5软件对动力学模型进行回归分析,建立舒胸片方提取物微波干燥过程的薄层干燥动力学方程。结果:增加微波功率或装载量对有效成分均有一定的损失作用;舒胸片方提取物微波干燥过程符合Logarithmic模型,在真空微波干燥条件下的有效扩散系数Deff随微波强度的增加而增加,随装载量的增加而降低;并由有效扩散系数确定了舒胸片方提取物活化能为125.80 W.g-1。结论:通过建立干燥过程传质模型,对进一步改善产品的质量,提高干燥效率都具有重要的意义。
Objective: To investigate the effect of microwave drying on the effective components of Shuxu Pian extract and the study of mass transfer model. Methods: The effect of different microwave power and material load on the dry transfer rate of ferulic acid and hydroxysafflor yellow A in Shuxian Tablet was studied. According to the second law of Fick, Origin 7.5 software was used to analyze the kinetics Model regression analysis, the establishment of Shu Chestnut square extract microwave drying process thin layer drying kinetics equation. Results: The increase of microwave power or the amount of loading had a certain loss effect on the active ingredients. The microwave drying process of Shuxiong Pian Fang extract conformed to Logarithmic model. The effective diffusion coefficient Deff under vacuum microwave drying increased with the increase of microwave intensity. And the loading decreased. The activation energy of Shuxu Pian Fang extract was determined to be 125.80 Wg-1 by the effective diffusion coefficient. Conclusion: Through the establishment of the drying process mass transfer model, to further improve product quality, improve drying efficiency are of great significance.