不同类型烤房对烤后K326上部烟叶香气质量的影响（英文）

Effects of Different Flue-curing Barns on Aroma Quality of Upper Flue-cured Tobacco Leaves of K326

[目的]对比研究不同类型烤房的优势,并为密集烤房及其配套烘烤工艺的发展和优化提供依据。[方法]通过比较分析经普通烤房、四棚密集烤房和三棚密集烤房加工的K326上部烟叶各类致香物质的含量和感官评吸质量,研究不同类型烤房对烟叶品质的影响。[结果]四棚密集烤房和普通烤房烤后上部烟叶的致香物质总量、质体色素降解产物、苯丙氨酸类致香物质和新植二烯含量无显著性差异,但极显著或显著高于三棚密集烤房。类胡萝卜素降解产物、美拉德反应产物、类西柏烷类致香物质和致香物质总量(除新植二烯)含量在3种烤房中无显著差异。感官评吸结果以四棚密集烤房最好,表现为香气量较充足,香气质较细腻,余味较舒适干净,整体使用价值高;其次为普通烤房,其表现为香气质细腻,香气量较充足,余味稍辣、稍苦;而三棚密集烤房的香气质、香气量、刺激及余味等均表现较差。[结论]四棚密集烤房因其装烟量较大,其烘烤环境类似于普通烤房,使得烟叶外观形态和内在物质的变化趋于一致,更有利于其致香物质的形成和积累,最终其烤后上部烟叶的香气质量与普通烤房差异较小;三棚密集烤房烤后上部叶的整体质量较差。

[Objective] This study was conducted to compare the aroma quality of up-per leaves of K326 flue-cured in different barns, and provide theoretical references for the development and optimization of bulk curing barn and the supporting tech-niques. [Method] The upper leaves of K326 were flue-cured in a commonness barn, a four-shelf bulk curing barn and a three-shelf bulk curing barn separately, and then the contents of aroma components and taste quality indices of the finished leaves were measured and compared. [Result] The contents of total aroma components, chromoplast pigment degradation products, phenylalanine aroma components and neophytadiene showed no significant differences in the leaves flue-cured in four-shelf bulk curing barn and commonness barn, but were significantly or very significantly higher than those in the leaves flue-cured in three-shelf bulk curing barn. The con-tents of carotenoid degradation products, Mail ard reaction products, cembranes aro-ma components and total aroma components （except neophytadiene） showed no significant difference among the three treatments. The results of sensory evaluation revealed that the sensory taste of the leaves flue-cured in four-shelf bulk curing barn was the best, as the finished leaves had rich, delicate aroma, comfortable and clean aftertaste. The leaves flue-cured in commonness barn was better than those flue-cured in three-shelf bulk curing barn in aroma quality, amount and aftertaste. [Conclusion] The four-shelf bulk curing barn had a large volume for tobacco leaf processing, but a similar baking environment to the commonness barn, which is conducive to the formation and accumulation of aroma components, so the finished leaves had similar appearance and quality with those flue-cured in commonness barn. The upper flue-cured leaves in three-shelf bulk curing bran had poorer quality than those flue-cured in the other two barns.