雪茄原料和烟支等温吸湿模型的建立

Establishment of Isothermal Hygroscopic Model of Cigar Raw Material and Cigarette

中文关键词: 雪茄原料  成品烟支  含水率  水活度  等温吸湿曲线  等温吸湿模型

英文关键词: cigar raw material  cigarette  water content  water activity  isothermal hygroscopic curve  isothermal hygroscopic model

中文摘要:

      目的 准确控制雪茄烟生产加工等关键环节环境条件及含水率，降低各环节物料损耗，优化控制参数，确保产品安全，保证产品质量。方法 以雪茄烟茄衣、茄套、茄芯和成品烟支为对象，测定其在20、30、40 ℃，不同相对湿度条件下的平衡含水率和水活度，建立不同温度下雪茄原料和烟支的等温吸湿曲线及吸湿曲线响应模型。结果 结果表明，雪茄原料和烟支在同一温度不同湿度条件下的等温吸湿曲线属于Ⅱ型等温线，雪茄烟原料及烟支的吸湿能力为茄衣≈茄套＞烟支＞茄芯，且温度越高，雪茄烟原料及烟支的吸湿能力越强;GAB模型为拟合雪茄原料和烟支等温吸湿曲线最优模型，预测值与实测值的决定系数R²均大于0.995，平均相对误差均小于5%，相对误差界均小于10%，且不同温湿度平衡含水率预测值与实测含水率呈斜率为1的直线关系，二者吻合程度较高。结论 GAB模型在预测雪茄烟生产加工等环节环境条件及含水率方面具有较高的准确性，能有效指导物料过程的水分和环境温湿度控制，降低各环节物料损耗，保证生产工序衔接顺畅，确保产品安全，提高产品品质。

英文摘要:

      The work aims to accurately control the environmental conditions and water content in the key link of cigar production and processing, reduce the material loss in each link, optimize the control parameters and ensure the product safety and quality. With cigar coat, cigar cover, cigar core and cigarette as the objects, the water content and water activity were balanced at 20, 30 and 40 ℃ under different relative humidity conditions. The isothermal hygroscopic curve and the response model of the hygroscopic curve of cigar raw material and cigarette at different temperature were established. According to the results, the isothermal hygroscopic curve of cigar raw material and cigarette at the same temperature under different humidity conditions belonged to type Ⅱ isotherm and the hygroscopic ability of cigar raw material and cigarette was:cigar coat ≈ cigar cover > cigarette > cigar core and the higher the temperature, the stronger the hygroscopic ability of cigar raw material and cigarette. GAB model was the optimal model to fit the isothermal hygroscopic curve of cigar raw material and cigarette. The determination coefficients R2 of predicted and measured values were all greater than 0.995, MRE was less than 5% and BRE was less than 10%. The predicted and measured water content balanced at different temperature and humidity showed a linear relationship with a slope of 1, indicating a high degree of agreement. GAB model has a high accuracy in predicting the environmental conditions and water content of cigar during production and processing and can effectively guide the control of water and ambient temperature and humidity in the material process, reduce material loss in each link, ensure smooth production process, guarantee product safety and improve product quality.