Tobacco Documents Online

C C : ~ , N titr. R. 'S. Marmor MEMORANDUM TO: Dr. A. W. Spears FROM: R. S. Marmor March 3, 1977 The extraction of ammoniated tobacco with freon was performed as requested. After removing the freon from the tobacco, the freon was extracted with aqueous acid to remove nicotine, then used again to extract a fresh batch of ammoniated tobacco. This process was repeated six times. The following conclusions can be drawn from Dr. Reid's experimental data: 1) The amount of nicotine removed on extraction with freon was the same regardless of whether fresh freon or recycled freon containing tobacco solubles was used. 2) The amount of tobacco solubles retained by the freon reached an equilibrium concentration level after only two extraction cycles. This is of course a good sign for a large scale freon process, but the major problem as I see it now is the fact that the ammonia pretreatment introduces off-taste in the recovered tobacco. While this won't be a problem if we are going to throw away the extracted tobacco, the aqueous extraction procedure we are presently investi- gating may be more reasonable. RSM/1mh Xc: Dr. H. J. Minnemeyer L4