K326和云烟85不同部位烟叶挥发性成分分析

采用同时蒸馏萃取和GC/MS法分析了云烟85 和K326 上部(B2F)、中部(C2F)和下部(X2F)烟叶的挥发性成分,并对这些烟叶进行了评吸。结果表明:①除新植二烯和二十八烷外,云烟85烟叶中许多挥发性物质的含量比K326高,但其挥发性物质总量比K326 的低,K326 中部叶总挥发性物质含量比云烟85多0.8mg/g, 达4.0mg/g,下部叶多出0.5mg/g;②下部叶中含较多的新植二烯、3-呋喃甲醛、巨豆三烯酮、硬脂酸和棕榈酸,中部叶中有较多的苯甲醇,而上部叶中降茄二酮较多;③中部叶的总挥发性物质含量最高,上部叶次之,下部叶最低,与评吸结果一致;④云烟85中部叶的吸味品质好于K326,但上下部叶不及K326。

Analysis of Volatile Components in Tobacco Leaves from Different Stalk Positions of Cultivars, K326 and Yunyan 85

The volatile components in the upper leaves (B2F), cutters (C2F) and lower leaves (X2F) of Yunyan 85 and K326 were analyzed with SDE and GC/MS, and these tobacco leaves were panel tested. The results showed that the levels of most volatile substances identified in Yunyan85 were higher than those in K326, except for (neophytadiene) and octacosane. However, the total amount of volatile components in Yunyan85 was lower than that in K326, lower by 0.8mg/g and 0.5mg/g in the cutters and lower leaves of Yunyan85, respectively. For different stalk positions, there were more neophytadiene, 3-furfural, megastigmatrienone, stearic acid and palmitic acid in lower leaves, while more benzyl alcohol in cutters and more solaventone in upper leaves. The total volatile component in cutters was the highest, followed by uppers, and in lower leaves the lowest, that result agreed with sensory evaluation. The smoking quality of cutters of Yunyan85 was better than that of K326, while that of the upper and lower leaves was not as good as K326.