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Effect of Temperature on Chemical Composition of Tobacco Leaves During Threshing and Redrying
QIYongjie, XUWenbing, ZHAODongjie, ZHANGXiaolong, ZHAOJinchao, NONGZhengbin, LYURennan, LUXiaogai, PANWuning, XUMaohua, PENGBo
Chin Agric Sci Bull ›› 2026, Vol. 42 ›› Issue (1) : 200-205.
PDF(1409 KB)
Abbreviation (ISO4): Chin Agric Sci Bull
Editor in chief: Yulong YIN
PDF(1409 KB)
Effect of Temperature on Chemical Composition of Tobacco Leaves During Threshing and Redrying
Based on the uniform design system, the influence of the key process temperature of threshing and redrying on the chemical composition of tobacco leaves was analyzed, and the process optimization control strategy was established to provide a theoretical basis for improving the chemical coordination and industrial availability of flue-cured tobacco leaves. The uniform design method was used to carry out the redrying processing test in Wenshan redrying plant, and multi-grade tobacco leaves with five fragrant flue-cured tobacco modules were used as raw materials. Combined with linear regression and redundancy analysis, the correlation between temperature parameters of moisture regain, drying and other process sections and chemical indexes such as total sugar, total nitrogen and sugar-alkali ratio after baking was explored. It was found that the temperature of the first moistening hot air and the temperature of the first moisture regain zone significantly increased the total sugar (correlation coefficient 0.650) and reducing sugar (correlation coefficient 0.561) by promoting starch degradation. The temperature of the second resurgence zone positively regulated the ratio of nitrogen to alkali (correlation coefficient 0.512) and the ratio of potassium to chlorine (correlation coefficient 0.359), and the temperature of the cooling zone significantly reduced the total nitrogen content (correlation coefficient -0.708). The temperature of the first drying zone had a two-way adjustment effect on the ratio of sugar to alkali (correlation coefficient 0.553). The temperature of the first moistening hot air, the temperature of the first resurgence zone, the temperature of the first drying zone, the temperature of the third drying zone, the temperature of the second resurgence zone and the cooling temperature are important process indexes affecting the coordination of chemical components and comprehensive quality of tobacco leaves.
fragrant flue-cured tobacco / leaf threshing and redrying process / temperature control / chemical constituents / uniform design / redundancy analysis / tobacco leaf quality
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