基于加热卷烟的国内烟草原料低温热解香气成分差异性分析

Analysis on the difference in aroma components of domestic tobacco raw materials under low temperature pyrolysis based on heated cigarettes

【目的】明确国内不同类型烟草在加热卷烟体系下的香气种类及释放量的差异。【方法】收集国内10个省份5种烟草类型的71份烟叶样品,利用热裂解-气质联用仪(PY-GC/MC)检测了样品在300℃条件下气溶胶中香气成分含量,【结果】不同类型烟草低温热裂解气溶胶中的生物碱种类、含量均有较大差异,晒红烟、晒黄烟、雪茄烟测到5种生物碱,烤烟和香料烟测到3种生物碱,晒红烟热裂解气溶胶烟碱最高,烤烟、晒黄烟、雪茄烟次之,香料烟最低,三组间差异达到显著水平,晒红烟300℃热裂解气溶胶中降烟碱、麦斯明、二烯烟碱、2,3'-联吡啶含量均最高;不同类型烟草低温热解气溶胶中香气物质种类、含量均有较大差异,检测到烤烟气溶胶有16种香气成分,晒黄烟有19种香气成分,晒红烟有18种香气成分,香料烟有13种香气成分,雪茄烟有15种香气成分。【结论】综合分析5种烟草类型热解烟气中共有的香气成分,初步认为,不同类型烟草300℃热解气溶胶中的香气成分种类和含量有较大差异;烤烟、晒黄烟的热解气溶胶中的香气成分含量相近,属于香气成分较高的烟草类型,香料烟组次之,雪茄烟、晒红烟组最低;晒黄烟可能是香气种类丰富且含量较高的一类烟草类型。

【Objective】To clarify the differences of aroma component types and release amount of different types of tobacco in China under the heat-no-burn cigarette system.【Method】71 tobacco samples of 5 types of tobacco from 10 provinces in China were widely collected,and the contents of aroma components in the smoke of the sample powder at 300℃were detected by pyrolysis gas chromatography-mass spectrometry(Py-GC/MC).【Result】There were great differences in the types and contents of alkaloids in different types of tobacco pyrolysis flue gas,Five alkaloids were measured in sun-cured red tobacco,sun-cured yellow tobacco and cigar tobacco,and three alkaloids were measured in flue-cured tobacco and oriental tobacco;the nicotine content of sun-cured red tobacco was the highest,followed by flue-cured tobacco,sun cured yellow tobacco and cigar tobacco,and oriental tobacco was the lowest,The difference among the three groups reached a significant level;the contents of nornicotine,mesmin,diene nicotine and 2,3'-bipyridine in the pyrolysis gas of sun-cured red tobacco were the highest,The types and contents of aroma substances detected and confirmed in different types of tobacco pyrolysis gas were quite different,In this experiment,16 aroma components were detected in the pyrolysis aerosol of flue-cured tobacco,19 aroma components in the pyrolysis aerosol of yellow sun-cured tobacco,18 aroma components in the pyrolysis aerosol of red sun-cured tobacco,13 aroma components in the pyrolysis aerosol of oriental tobacco,and 15 aroma components in the pyrolysis aerosol of cigar tobacco.【Conclusion】Based on the comprehensive analysis of the aroma components in the pyrolysis flue gas of five types of tobacco,it is tentatively believed that the types and contents of aroma components in the pyrolytic aerosols of different types of tobacco at 300℃are quite different,The content of aroma components in the pyrolytic aerosols of flue-cured tobacco and sun-cured tobacco was similar,belonging to the tobacco type with higher aroma components,followed by oriental tobacco,cigar tobacco and sun-cured red tobacco,Relatively speaking,yellow sun-cured tobacco may be a type of tobacco with rich aroma and high content.