Smoke Release Characteristics of Tobacco Leaves Under Heating
In order to investigate the smoke release characteristics of tobacco under heating, flue-cured (B2F and C3F), burley (B2F and C3F) and oriental (B1 and B2) tobaccos were heated in a laboratory heating device at 200-400 ℃, and the deliveries of TPM, nicotine, moisture and tar in smoke were analyzed. The results showed that: 1) Under heating status, the tobacco leaves of different kinds and stalk positions presented similar trends, the deliveries of TPM, nicotine, moisture and tar increased gradually with a rise in heating temperature. 2) When the heating temperature was higher than 250 ℃, the nicotine release ratio in smoke was significantly higher than the free nicotine ratio in corresponding tobacco leaf, it suggested that the nicotine in smoke was not only from the migration of free nicotine but also from the thermal decomposition of bound nicotine in tobacco. 3) The higher moisture level in the smoke of heated tobacco, was not only from the migration of moisture in leaf but also from the pyrolysis of tobacco.
国家科技期刊平台
NSTL
万方数据
维普
