不同工艺电加热卷烟再造烟叶主要成分的释放性能

为研究电加热卷烟专用再造烟叶主要成分的释放性能，对干法、造纸法、稠浆法和辊压法再造烟叶进行了微观形貌分析，并利用管式炉加热装置对气溶胶捕集物（ACM）、烟碱、甘油和水分等主要组分进行分析，考察再造烟叶含水率、甘油质量分数和加热温度对释放量、释放率、捕集率和逐口释放稳定性等释放性能指标的影响。结果表明：(1)不同再造烟叶的微观结构和释放率差异较大。相比于其他再造烟叶，辊压法再造烟叶结构更为均匀、致密，主要组分的逐口释放稳定性更好。(2)再造烟叶含水率增大使烟碱和甘油最大释放量对应的抽吸口数序号后移，但对释放量的影响因原料类型不同而有所差异。(3)再造烟叶甘油质量分数升高能不同程度地促进气溶胶捕集物、甘油和水分的释放，对烟碱的影响因原料类型不同而有所差异。(4)在160～250℃范围内，加热温度越高，主要组分的释放率越高，但逐口稳定性越差。存在兼顾主要组分释放量、释放率和逐口释放稳定性的加热卷烟再造烟叶最佳加热温度范围。

Release performance of main components in reconstituted tobacco sheets by different processing techniques for electrically heated tobacco products

In order to study the releasing performance of main components in reconstituted tobacco sheets for electrically heated tobacco products, microscopic morphological analysis of reconstituted tobacco sheets from drying process, paper-making, slurry and rolling methods were performed. The main components in the aerosol generated, such as aerosol collected matters (ACM), nicotine, glycerol and moisture, were analyzed with a tube furnace heating device to investigate the effects of moisture content, mass fraction of glycerol and heating temperature. The releasing performance parameters included the total releasing amount, releasing rate, collecting ratio and puff-by-puff releasing stability of the reconstituted tobacco sheets by different processes. The results showed that: 1) The microstructures and releasing rates of different reconstituted tobacco sheets were quite different. Compared to the other reconstituted tobacco sheets, the rolling process reconstituted tobacco sheet had relatively more homogeneous and compact structure and better puff-by-puff releasing stabilities of the main components. 2) The puffing numbers corresponding to the maximum releases of nicotine and glycerin increased with increase of moisture content in reconstituted tobacco sheets, and its effects on nicotine and glycerin releases varied for different tobacco sheets. 3) Higher glycerol mass fraction in the reconstituted tobacco sheets promoted the releases of ACM, glycerol and moisture to different extents, and its effect on nicotine release varied for the different tobacco sheets. 4) The releasing rates of the main components increased with the rise of heating temperature in the range from 160 ℃ to 250 ℃, however the puff-by-puff releasing stability became worse. There was an optimum heating temperature range that could balance the releasing amounts, releasing rates and puff-by-puff releasing stabilities of the main components in the reconstituted tobacco sheets.