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不同加工方式烟梗的物理保润性能对比分析及应用

Application of tobacco stems processed with different methods for moisture retention

  • 摘要: 为了研究梗条、梗片的物理保润性能以及烟梗复烤和制梗丝工艺的差异性,采用动态水分吸附法,利用Weibull模型对数据进行拟合,以特征时间α参数值的大小作为物理保润性能差异性评价指标,分析了梗条、梗片的保润性能、吸水率、失水率的差异;通过加工工艺对比,分析了两种加工工艺的生产效率、能耗、物理质量、感官质量等指标差异。结果表明:①与梗条相比,在相同温湿度条件下,梗片吸水率和失水率均大于梗条,梗片吸湿、解湿速率较快。②与传统梗条复烤、制梗丝工艺相比,梗片复烤烤梗机设备温度降低了7.0℃、梗片复烤生产效率提升了30.51%;梗片制梗丝工序生产效率提升了20.75%;每生产1 000 kg梗原料,梗片综合能耗标煤下降了2.20 kgce;节约生产时间2.11 h。③与采用梗条制成的梗丝样品物理指标、感官质量相比,采用梗片制成梗丝的出梗丝率和填充值分别下降了6.82百分点和0.99 cm3/g;而梗片梗丝样品在香气质、杂气、余味等方面有改善,总体感官质量有提升。研究结论可为优化制梗丝工艺,缩短加工时间,提高制梗丝生产效率提供参考依据。

     

    Abstract: In order to study the differences of physical moisture retention, redrying and cutting technologies between bar-shaped and laminal tobacco stems, a dynamic moisture absorption method was adopted to fit the data with Weibull model. The different moisture retention, absorption rate and desorption rate between bar-shaped and laminal stems were analyzed by taking the value of characteristic time parameter α as a differentiation assessment index of physical moisture retentivity. The production efficiency, energy consumption, physical indexes and sensory quality between bar-shaped and laminal stems were analyzed via comparing their processing technologies. The results showed that:1) Comparing with bar-shaped stems, at the same temperature and humidity, both of the water absorption rate and water loss rate of stem were bigger than those of stem slice, and the hygroscopicity and dehydration rate of stem slice would be quicker. 2) Comparing with the traditional redrying and cutting technologies for bar-shaped stems, the temperature of redriers for laminal stems lowered by 7.0℃, and the efficiencies of laminal stem redrying and cutting increased by 30.51% and 20.75%, respectively. The total energy consumption of laminal stems decreased by 2.20 kgce per 1 000 kg cut stems, and the production duration shortened by 2.11 h. 3) Comparing with the physical indexes and sensory quality of cut bar-shaped stems, the yield and filling value of cut laminal stems reduced by 6.82 percentage points and 0.99 cm3/g respectively, while the aroma quality, offensive odor, aftertaste and overall sensory quality of cut laminal stems were promoted. This study provides reference information for optimizing cut stem processing technologies, shortening processing duration and improving cut stem production efficiency.

     

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