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Behaviour of Seedleaf Tobaccos in a Laboratory Fermentation Chamber

Abstract A laboratory system which simulates factory fermentation of tobaccos has been designed and made operational. This system is of broader scope and versatility than the known laboratory tobacco fermenters. The device consists of a Lexan® (polycarbonate) humidified chamber containing a rotating aluminum wheel bearing 8 polypropylene vessels. Heating, humidification and aeration are controlled. Routine fermentation conditions are 45°C and 90 % relative humidity for 4 days. Seedleaf tobaccos from 1973-1977 have been fermented in this chamber. Extent of fermentation was determined by decreases in the percentages of total nitrogen, total volatile bases and nicotine, and by an increase in pH of the dried tobacco.