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The coating liquid of reconstituted tobacco were irradiated for different period by ultraviolet (UV), and the volatile aroma components of the coating liquid of reconstituted tobacco after irradiation were extracted using simultaneous distillation and solvent extraction method, then identified by GC-MS, and then analyzed by principal component analysis and sensory evaluation. The results showed that the optimal UV treatment time was 15 min. At this time, there were 55 kinds of aroma components, and the newly generated aroma components mainly included alcohols, ketones and aldehydes, such as solavetivone, linalool, and benzaldehyd, etc; the aroma amount of cigarettes was increased slightly, the smoke mildness was slightly increased, and the sensory effect was the best. [ABSTRACT FROM AUTHOR]