Authors

Abstract

The process of slicing is a vital component in the preliminary treatment of licorice roots.The physical properties and shear mechanical attributes of licorice root are of considerable importance for the development and optimization of machinery intended for slicing licorice root. In this research, four-year-old mature licorice roots were selected as the experimental specimens, and shear strength evaluations were conducted on these roots by means of a universal testing machine (Instron 3344 series). The experimental design utilizes a blend of univariate and multivariate orthogonal testing techniques. Within this design, moisture content, shear speed, and shear speed are identified as the independent variables, while the maximum cutting force is defined as the primary assessment criterion.The experimental results reveal that the primary and secondary factors influencing the shear strength of licorice root follow the order: moisture content > shear speed > shear angle. The optimal conditions for the slicing pretreatment process are identified as a moisture content of 50 ± 2%, a shear speed of 0°, and a shear speed of 90 mm·min-1.

Abstract in Chinese

切片是甘草根预处理流程中的关键环节之一。甘草根的物理参数和剪切力学特性对于甘草根切片设备的研发和工艺优化具有重要意义。本研究选取四年生的成熟期甘草根作为试验材料，利用万能试验机（Instron3344系列）开展甘草根剪切性能试验。试验设计采用单因素和多因素正交试验，将含水率、剪切角度、剪切速度设定为试验因素，以最大剪切力作为评价指标。结果表明，影响甘草根剪切力的主次因素为：含水率>剪切速度>剪切角度。当含水率为50±2%，剪切角度为0°，剪切速度为90mm·min-1时，进行切片预处理工序最为适宜。