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为了进一步改善烟叶香气品质和优化密集烘烤工艺,在四川省凉山州以云烟85中部叶和上部叶为试验材料,研究了密集烘烤定色后期(47℃～54℃)、干筋前期(54℃～60℃)、干筋后期(60℃～68℃)不同湿度处理对烤后中上部烟叶致香物质和评吸质量的影响.结果表明,密集烘烤后期高湿(T6)能显著提高中部烟叶致香物质总量和新植二烯含量,低湿处理(T1)的大部分致香物质含量较低,但以T3(定色后期低湿度,干筋期高湿度)处理各类致香物质含量最高,且感官评吸质量最佳;在上部叶中,各类致香物质(除新植二烯)和致香物质总量以定色后期和干筋前期低湿,干筋后期高湿(T5)处理最高,评吸质量以T5处理最好,T6处理其次;相关分析表明,大部分评吸指标与各类致香物质之间呈正相关,且不同部位烟叶各指标间的相关性强弱有所不同,中部叶大部分指标间的相关性要好于上部叶.综合考虑,在试验中,中部叶烘烤后期湿球温度以T3(定色后期36℃～37℃,干筋前期39℃～40℃,干筋后期41℃～42℃)、上部叶以T5(定色后期36℃～37℃,干筋前期37℃～38℃,干筋后期41℃～42℃)处理为最佳,能改善烟叶香气品质.
In order to further improve the aroma quality of tobacco leaves and optimize the intensive baking process, the middle and late leaves of Yunyan 85 in Liangshan Prefecture of Sichuan Province were used as the experimental materials to study the effects of intensive baking and fixing at the late stage (47 ℃ ~ 54 ℃) 54 ℃ ~ 60 ℃), and the effect of different humidity treatments on the aroma components and smoking quality of the middle and upper leaves after roasting at 60 ℃ ~ 68 ℃ .The results showed that the high-humidity (T6) Most of the aroma components in low-moisture treatment (T1) were lower than those in the middle part of tobacco, but T3 In the upper leaves, the aromatics (except neophytadiene) and the aroma compounds of the upper leaves were in the late stage of fixing color and the low moisture in the pre-dry tendons and the late-high dry gluten T5 treatment was the best, T6 treatment was the second best. Correlation analysis showed that most of the smoking indexes were positively correlated with various aroma components, and the correlations among the indexes of tobacco in different parts Strength is different, most of the central leaf correlation between the indicators is better than the upper leaf. In the experiment, the temperature of the wet bulb in the middle leaves was T3 (the late stationary phase was 36 ℃ ~ 37 ℃, the early dry phase was 39 ℃ ~ 40 ℃, the late dry phase was 41 ℃ ~ 42 ℃) 36 ℃ ~ 37 ℃ in late color, 37 ℃ ~ 38 ℃ in pre-dried tendon and 41 ℃ ~ 42 ℃ in late dry tendon, which can improve the aroma quality of tobacco leaves.