In order to improve the level of process control and cigarette quality,the technology for tobacco group processing was studied.The process and processing parameters for each sub-blend group were tested.According to the results of sensory quality evaluation,the processing parameters in 3 key process steps(loosening and conditioning,ordering and casing,and cut tobacco drying)were determined.Comparing with the control,the puff number,deliveries of nicotine and tar of group processing samples reduced slightly and CO delivery decreased significantly.The sensory quality improved obviously,the flavour was smooth,the smoke was mild and glomerate,it offered enhanced shades of aroma and note of sweetness,the offensive odor and irritation reduced obviously,and aftertaste improved in a sort.Furthermore,the cost of casing decreased by 25%.

In order to improve the grouping processing technology of Chinese style cigarette,the formulation of tobacco groups in a cigarette blend was studied. The groups or sub-blends were formulated on the basis of the chemical components analysis and sensory evaluation of single grade tobacco in a tobacco blend.Different grades in a blend were grouped according to their chemical constituents then modified by the sensory evaluation of cigarettes made of each single grade tobacco.It was indicated that the tobacco sub-blend groups formulated with this method were more reasonable and scientific,and convenient for production management and process control.