滤嘴通风对卷烟主流烟气主要氮杂环类碱性香味成分释放量的影响

Effects of filter ventilation on releases of major nitrogen-containing heterocyclic basic aroma components in mainstream cigarette smoke

为明确滤嘴通风对卷烟主流烟气主要含氮杂环类碱性香味成分释放量的影响规律及合理调节烟气平衡,采用GC-MS法分析了不同滤嘴通风度卷烟烟气氮杂环类碱性香味成分(简称碱性香味成分)的释放量。结果表明:①卷烟烟气碱性香味成分主要为吡啶类和吲哚类,两者约占烟气总释放量的90%,其中吡啶类主要为2,3'-联吡啶、吡啶、3-乙烯基吡啶和3-甲基吡啶,吲哚类主要为2-甲基吲哚;②随卷烟滤嘴通风度的增加,烟气中16种主要碱性香味成分释放量及碱性香味成分释放总量呈逐渐降低的趋势,但降低程度差异较大;③随卷烟滤嘴通风度的增加,16种主要碱性香味成分的释放量对烟气碱性香味成分释放总量的贡献差异较大,2,3'-联吡啶、3-甲基吡啶、4-甲基吡啶、2-乙基吡啶和2,6-二甲基吡嗪等成分占烟气碱性香味成分释放总量的比例呈升高趋势(正贡献),吡啶、3-乙烯基吡啶、2-甲基吡啶、喹啉和异喹啉等成分是负贡献,2-乙酰基吡咯、2-甲基吲哚和2,4-二甲基吡啶等组分几乎无变化。

To investigate the effects of filter ventilation on the releases of major nitrogen-containing heterocyclic basic aroma components(BACs) in mainstream cigarette smoke for optimum smoke sensory balance, the releases of BACs in mainstream cigarette smoke at different filter ventilation rates were analyzed by GC-MS method. The results showed: 1) The BACs in mainstream cigarette smoke were mainly pyridine and indole compounds, their releases accounted for about 90% of the total release of this type of compounds in smoke. The pyridines compounds were mainly 2,3’-bipyridine, pyridine, 3-vinylpyridine and 3-methylpyridine, and the major indole compound was 2-methylindole. 2) With the increase of filter ventilation rate, both the releases of 16 BACs and the total release of all BACs in mainstream cigarette smoke decreased gradually, however their rates of decline differed greatly. 3) With the increase of filter ventilation rate, the proportions of the releases of 16 BACs in the total release of all BACs differed significantly, the proportions of 2,3’-bipyridine, 3-methylpyridine, 4-methylpyridine, 2-ethylpyridine and 2,6-dimethylpyrazine raised gradually, those of pyridine, 3-vinylpyridine, 2-methylpyridine, quinoline and isoquinoline decreased, and those of 2-acetylpyrazole, 2-methylindole and 2,4-dimethylpyridine were almost unchanged.