Man Made Tobacco, Expended Tobacco and Genetically Modified Tobacco
Reconstituted (man-made) tobacco, also known as homogenized tobacco, is made from pieces of tobacco leaf such as dust, stems and by-products. These are finely ground, processed with liquids and rolled into a flat sheet of uniform thickness and quality. In the reconstitution process, nicotine is extracted and then reapplied to the sheet along with other additives so as to control the amount of nicotine in the overall blend. Reconstituted leaf was first proposed as a cigar wrap and for packaging for cigarettes in the mid-1800s. Reconstituted tobacco was first introduced into commercial cigarette production in the United States in the 1950s.
Genetically Modified and Bio-Engineered Tobacco
In the 1980s cigarette manufacturers began investigating genetic bio-engineering of tobacco plants as a way to control nicotine delivery.