Abstract: In order to study the effect of alcohol‑soluble extract of burley tobacco with different molecular weight on cigarette flavorings，ultrafiltration membrane with different pore sizes（3.5 ku，7 ku，8—14 ku and 25 ku） was used to separate the alcohol‑soluble extract of burley tobacco，the volatile aroma components of alcohol‑soluble extract and membrane separation products of tobacco were analyzed by gas chromatography‑mass spectrometry（GC‑MS），and the membrane separation products were evaluated for cigarette flavoring.The results showed that a total of 53 volatile aroma components were identified by GC‑MS. Among them，the total volatile component content of 8—14 ku membrane separation products was the highest（113.75 mg/g），and the composition kinds was the highest（38 kinds）.A comprehensive evaluation model of aroma quality was established by principal component analysis.The quality of 8—14 ku membrane separation products was the best，followed by 7 ku membrane separation products，and alcohol‑soluble extract was the lowest.The results of sensory evaluation showed that 8—14 ku membrane separation products had the best aroma enhancement effect，which could reduce irritation and impurity，and improve aftertaste；Followed by 7 ku membrane separation products，which had less impurity and irritation，more comfortable aftertaste；Alcohol‑soluble extract and 3.5 ku membrane separation products had the lowest sensory evaluation scores.In summary，the optimal group of alcohol‑soluble extract of burley tobacco suitable for cigarette flavoring is 8—14 ku membrane separation products.

Key words: Burley tobacco, Alcohol?soluble extract, Membrane aperture, Membrane separation products, Principal component analysis, Cigarette flavoring, Sensory evaluation

摘要： 为研究不同分子质量白肋烟醇溶性提取物在卷烟加香中的作用，采用不同孔径（3.5 ku、7 ku、8~14 ku和25 ku）的透析膜对白肋烟醇溶性提取物进行分离，通过气相色谱-质谱联用技术（GC-MS）对白肋烟醇溶性提取物及膜分离产物进行挥发性香气成分分析，并对各膜分离产物进行卷烟加香评价。结果表明，采用GC-MS共鉴定出53种挥发性香气成分，其中8~14 ku膜分离产物的挥发性香气成分总含量最高，为113.75 mg/g，成分种类最多，为38种；利用主成分分析法建立了品质综合评价模型，8~14 ku膜分离产物的品质最佳，其次为7 ku膜分离产物，醇溶性提取物最差。感官评吸结果表明，8~14 ku膜分离产物的卷烟加香效果最好，可掩盖杂气，降低刺激性，改善余味；其次为7 ku膜分离产物，杂气和刺激性较小，余味较舒适；醇溶性提取物和3.5 ku膜分离产物的感官评价得分最低。综上，适用于卷烟加香的白肋烟醇溶性提取物的最优组分为8~14 ku膜分离产物。

关键词: 白肋烟, 醇溶性提取物, 膜孔径, 膜分离产物, 主成分分析, 卷烟加香, 感官评价