烤烟香型的重要影响因子及香型指数模型的构建初探

目的]为烟叶香型风格的定位与评价提供理论依据。方法]以不同地区烤烟的中部叶片为材料，测定其香气成分及常规化学成分，并对烟叶进行单料评吸。采用逐步回归的方法建立烟叶香型指数模型。结果]烟叶中有9种香气成分对其香型的影响较大。对烟叶浓香风格形成贡献由大到小的影响因子为茄酮〉二氢猕猴桃内酯〉异戊酸〉二氢-β紫罗兰醇〉法尼基丙酮〉苯甲醇〉巨豆三烯酮；对烟叶清香型风格形成贡献由大到小的影响因子为大马酮〉棕榈酸〉甲酯。当Y香型指教〈2.8时烤烟为清香型，Y香型指数在2．8～3．8之间时，烤烟为中间香型，Y香型指数〉3.8时烤烟为浓香型。结论]所建立的烤烟香型指数模型对烤烟香型风格的判断准确率为87．9％。

Preliminary Study on Important Factors on Aroma Type of Flue-cured Tobacco and construction of Aromas Index Model

Objective] The aim was to provide the theoretical basis for the orientation and evaluation on tobacco aromas types.Method] With middle leaves of flue-cured tobacco from different areas as the materials,the aroma components and normal components in which were determined and the smoking evaluation on tobacco was done at the same time.The stepwise regression method was taken to establish the aromas index model of tobacco.Result] 9 aromas components in tobacco leaf had bigger effect on its aromas type.The co...