初烤烟自然醇化过程中物理特性变化规律

Changes in Physical Properties of Flue-cured Tobacco Leaves during Natural Alcoholization Process

[目的]合理安排各产地烟叶打叶复烤加工顺序,缓解库存压力。[方法]对福建、安徽和四川C2F等级烟叶打叶复烤前自然醇化过程中物理特性变化规律进行研究。[结果]随着醇化的进行,3个产地C2F烟叶的物理特性变化趋势不完全一样。烟叶厚度、叶质重总体上呈下降趋势;平衡含水率呈上升趋势;拉力和延伸率的变化趋势差异较大。根据气候状况、物理特性变化规律和储存实际确定福建、安徽和四川烟叶适宜打叶复烤加工时间分别为3月份、3月份和4月份之前。[结论]研究可为科学地设置打叶复烤工艺参数提供理论依据。

[Objective]To rationalize the sequence of threshing and redrying in different place of production and relieve the pressure of the inventory.[Method]Changes of physical properties of three origins （Fujian,Anhui and Sichuan） of C2F in the natural alcoholization process were studied.[Result]As the alcoholization went, leaf physical properties of three origins of C2F had different change trend.During the whole of natural alcoholization process, the leaf thickness and leaf weight reduced, the opposite change was observed for equilibrium moisture content.Changes in the tensile strength and elongation of three varieties varied.According to climatic conditions, physical properties and actual situation, the optimum deadline of redrying for the C2F of Fujian and Anhui was March, for Sichuan was April.[Conclusion]The study can provide a theoretical basis for scientifically setting up the threshing and redrying technological parameters.