A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
A24B15/18—Treatment of tobacco products or tobacco substitutes
A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
A24B15/305—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances of undetermined constitution characterised by their preparation