Research Of Reducing Harmful Components In Cigarette Smoke With Tea And Tea Extract

The effects of tea polyphenol(TP) on the components of mainstream smoke were discussed. The results implied that carbon monoxide and tar in the mainstream smoke were respectively reduced by 14.81% and 8.98% when the addition rate of TP was 2.0% by the weight of sliced tobacco. Nicotine in the mainstream smoke was reduced by 21.52% when TP was added to cigarette by 4.0% by the weight of sliced tobacco. Both the reduction of smoke moisture and the increase of puff times were caused by TP as an additive. TP was able to scavenge gas-phase free radicals and solid-phase free radicals in mainstream smoke. TP added to cigarette had adverse effect on the smoking quality of cigarette. When the addition rate of TP was more than 2.0% by weight, the astringency and the offensive odor of cigarette smoke increased significantly.The results of thermal analysis showed that TP added to sliced tobacco changed neither the decomposition rate of sliced tobacco nor the curves of thermo-gravimetric analysis (TG) or differential thermo-gravimetric analysis (DTG). The results of Pyrolysis-Gas Chromatography-Mass Spectrometry (Pyro-GC-MS) analysis suggested that, with the addition of TP, tar reduction was caused by removal of some components from tobacco smoke.Tea sheet was made from tea leaf and tea stalk. Research concerning papermaking tea sheet (P.T.S) was carried out, and the main manufacture techniques of P.T.S on laboratory scale were discussed in the paper. The results showed that the quality of tea sheet could be improved after being treated with tannase and dilute hydrochloric acid. The structural strength of tea sheet was related to the beating.The tar in the cigarette smoke was effectively reduced when the tea sheet was added in cigarette by 15%, and little effect on smoking quality was perceived.