In order to evaluate the potential of tobacco stems and develop a new e-cigarette flavor, supercritical fluid CO2 extraction technology was employed to extract aroma components in tobacco stems. The chemical components in the extract were analyzed by GC/MS, and the flavoring effect of the e-cigarette liquid was evaluated by sensory evaluation of the aerosol produced. The results showed that: 1) The optimal extraction parameters were: extraction pressure 20 MPa, extraction CO2 flow 5 L/min, extracting for 30 min at 120 ℃, and the yield was 9.9% of the stem by weight under such condition. 2) GC/MS identified 32 aroma components in tobacco stem; among them, the content of 2,3-dihydro-3,5-dihydroxy-6-methy-4H-pyran-4-one (DDMP) was higher, which was believed to mainly contribute to the roasted and tobacco-like aroma of the e-cigarette aerosol. 3) The obtained tobacco stem extract was shown to impart sweet, roasted and tobacco-like aroma to e-cigarette, and thus had the potential to aid the development of e-cigarettes of tobacco characteristic styles.%为开发新型电子烟烟液提取手段并实现烟梗的资源化利用，以超临界CO2流体萃取（SFE）工艺萃取烟梗末的香味物质，采用GC/MS法对萃取物的成分进行分析，并进行了电子烟加香效果评价。结果表明：①最佳萃取工艺条件为：萃取温度120℃，萃取流量5 L/min，萃取时间30 min，萃取压力20 MPa；此条件下烟梗末萃取物的产率为9.9%。②烟梗末样品萃取物经GC/MS分析共鉴定出32种主要成分，其中质量分数较高的2,3-二氢-3,5-二羟基-6-甲基-4H-吡喃-4-酮（DDMP）对电子烟烟气表现出的烘烤香和烟草本香具有重要贡献。③该法所制备的烟梗末萃取物为电子烟烟气赋予了甜的、烘烤的烟草香味，为特征风格电子烟产品的开发提供了潜在的应用价值。
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