Study on the Effects of Processing Parameters in the Primary Processing of Cigarette Production on Benzo[a]pyrene Delivery in Cigarette Mainstream Smoke

[Objective]The study aimed to explore effects of key processes' parameters in the primary processing of cigarette production on benzo[a]pyrene(BaP) delivery in cigarette mainstream smoke.[Method]Four processes were investigated separately by uniform design method,namely microwave loosening,loosening and conditioning,tobacco cutting and HT and tobacco drying.[Result]For tobacco cutting process,when tobacco cut width was 1 mm.,the BaP delivery got the lowest.For microwave loosening process,processing time acted positively on the BaP delivery.For loosening and conditioning process,rotation speed of cylinder acted negatively on the BaP delivery.For HT and tobacco drying process,HT operating steam pressure and hot air temperature acted positively on the BaP Delivery,while,interaction between HT operating steam pressure and moisture exhaust damper opening and interaction between hot air temperature and hot air damper opening acted negatively on it.And the decreased order of effects as follows: hot air temperature,interaction between HT operating steam pressure and moisture exhaust damper opening,interaction between hot air temperature and hot air damper opening,and HT operating steam pressure.[Conclusion]The processing parameters in the primary processing of cigarette production had some effects on BaP delivery,and adjustment of processing parameters was helpful to the delivery reduction.