Baking process method for reducing release amount of benzopyrene in flue-cured tobacco

TL;DR: In this paper, a method for reducing the release amount of benzopyrene in flue-cured tobacco is proposed, which is based on a six-stage smoking process.

Abstract: The invention discloses a baking process method for reducing the release amount of benzopyrene in flue-cured tobacco. A tobacco curing process is partitioned into six stages, the dry-bulb temperature is set to gradually raise between 35 DEG C and 68 DEG C, the wet-bulb temperature is 33-42 DEG C, the temperature raising rate is 0.2-0.8 DEG C/h, the relative humidity is 22-87 percent and falls in sequence, the baking time is 13-57 hours, and the first four stages are shorter in baking time while the last two stages are longer in baking time. The six stages are carried out continuously. After baking, the release amount of the benzopyrene in tobacco leaves is lowered by over 20 percent than that of benzopyrene in a blank control, the grade structure of the tobacco leaves is improved, the sensory quality of the tobacco leaves is improved, and the quality and amount of aroma are improved greatly. Moreover, irritation and offensive odor are reduced, the price of the baked tobacco leaves is higher, and the economic value of the tobacco leaves is raised.