Effects of Different Drying Methods on the Processing Quality of Cut Tobacco

To investigate the effects of different drying methods on the processing quality of cut tobacco, the change trends of physical indexes, chemical components, seven harmful components and sensory quality of cut tobacco after cylinder drying and pneumatic drying, respectively, were studied. The results showed that:(1)Compared with cylinder drying, the dried tobacco by pneumatic drying had significantly higher whole cut rate,filling value,total nitrogen and polyphenols contents,lower total volatile acids.There were some differences change trends of aroma substances in different tobacco formulation.Volatile aroma components of mainstream smoke greatly reduced overall.Among the seven harmful components,CO,NNK,phenol,croton aldehyde delivery and hazard index were significantly reduced,while NH3 delivery was obviously raised by pneumatic drying.(2)The effects of drying methods on the sensory quality mainly reflected in aroma, offensive odor,impact,irritation,smoothness and so on.Pneumatic drying could promote smoothness,while it can also increase offensive odor,irritation and reduce diffusiveness.The effects of drying methods on sensory quality were obviously different in different tobacco formulations.