Tob. Reporter, 1991, 118-2, p. 11-9, ISSN.0361-5693

Development of a theoretical model to predict the efficiency of flavor adsorption for tobacco cut-filler

NAKANISHI Y.
Japan Tobacco Inc., Tobacco Science Research Center, Yokohama, Kanagawa, Japan.
Historically, processes for the application of volatile flavors to tobacco cut-filler materials has depended solely on an adsorption process. Results from the author's study, employing both theoretical and empirical approaches, have indicated that even distribution of volatile flavors on tobacco filler can only be attainted employing an adsorptive process. An analytical method for evaluating the flavoring process was developed on the assumption of a continuous countercurrent adsorption process operating under steady-state and isothermal conditions. Values of constants and variables required for calculation were obtained from theoretical and experimental results which have already been reported by the author. Experiments were designed to be dependent solely on adsorption and carried out employing Burley tobacco cut-filler, ethanol (the principal flavor constituent), and a rotary drum mixter with an inside diameter of 0.894 m, a length of 2.00 m, and a volume of 1260 l. Calculated results obtained with the theoretical model, were in sufficient agreement with the experimental data to warrant practical application of this flavor adsorption model. The efficiency of flavor application obtained in this study was low. Predictions based on the theoretical model indicate that flavoring efficiency could be improved by redesign or modification of the current flavor application process.