References
- 1. Hoffmann, D., S. S. Hecht, R. M. Ornaf, and E. L. Wynder: N'-nitrosonornicotine in tobacco; Science 186 (1985) 265-26Z
- 2. Lijinsky, W., L. Reefer, E. Conred, and R. van de Bogart: Nitrosation of tertiary amines and some biological implications; J. Natl. Cancer Inst. 49 (1972) 1239-1249.
- 3. Brunnemann, R. D., J. Masaryk, and D. Hoffmann: Role of tobacco stems in the formation of 7V-nitrosa-mines in tobacco and cigarette mainstream and side-stream smoke; J. Agric. Food Chem. 31 (1983) 1221-1224.
- 4. MacRown, C. T., E Elevazi, J. L. Sims, and L. E Bush: Tobacco specific Af-nitrosamines: Effect of Burley alkaloid isolines and nitrogen fertility management; J. Agric. Food Chem. 32 (1984) 1269-1272.
- 5. Hecht, S. S., C. B. Chen, and D. Hoffmann: Tobacco specific nitrosamines: occurrence, formation, carcinogenicity, and metabolism; Acct. Chem. Res. (1979) 92-98.
- 6. Chamberlain, W. J., R. F. Severson, and M. G. Stephenson: Levels of N-nitrosonornicotine in tobacco grown under varying agronomic conditions; Tob. Sci. 28 (1984) 156-158.
- 7. Chamberlain, W. J., J. L. Baker, O. T. Chortyk, and M. G. Stephenson: Studies on the reduction of nitrosamines in tobacco. Tob. Sci. 30 (1986) 81-82.
- 8. Djordjevic, M., C. J. MacRown, and L. P. Bush: Alkaloids, nitrates and nitrosamines in lamina and stem of Burley tobacco differing in alkaloid concentration; Proc. Tob. Chem. Res. Conf. 39 (1985) 22.
- 9. Andersen, R. A., M. J. Rasperbauer, H. R. Burton, J. L. Hamilton, and E. E. Yoder: Changes in chemical composition homogenized leaf-cured and air-cured Burley tobacco stored in controlled environments; J. Agric. Food Chem. 30 (1982) 663-668.
- 10. Burton, H. R., and M. J. Rasperbauer: Changes in chemical composition of tobacco lamina during senescence and curing plastid pigments; J. Agric. Food Chem. 33 (1985) 879-883.
- 11. Burton, H. R., R. A. Andersen, S. Gay, and L. Walton: Influence of curing variables on the chemical composition of Burley tobacco. II. The nitrogen fraction; Proc. Tob. Chem. Res. Conf. 39 (1985) 23.
- 12. Lowe, R. H., L. P. Bush, and J. L. Hamilton: Chemical modification of Burley tobacco by curing regime; in Proceedings of the Univ. of Rentucky Tobacco and Health Res. Inst., 5th Tobacco and Health Workshop Conference, 1979, pp. 57-81.
- 13. Hecht, S. S., C. B. Chen, N, Hirota, R. M. Ornaf, T. C. Tso, and D. Hoffmann: Tobacco-specific nitrosamines: Formation by nitrosation of nicotine in vitro and during tobacco curing and carcinogenicity in strain A mice; J. Natl. Cancer Inst. 60 (1978) 819-824.
- 14. Burton, H. R., G. H. Childs, R. A. Anderson, and P. D. Fleming: Chemical changes of Burley tobacco during senescena and curing. III. Tobacco specific nitrosamines; J. Agric. Food Chem. 37 (2) (1989) 426-430.
- 15. Atkinson, W O., J. R. Sims, and J. R. Calvert: Response of reduced alkaloid Burley genotypes to nitrogen fertilization; Tob. Sci. 20 (1976) 32-34.
- 16. Miles, R. L., IE Hogan, C. W. Swann, H. Womack, and J. D. Arnett, Jr.: Tobacco production; Univ. of Georgia Circ. 638 (1980) 1-18.
- 17. Severson, R. F., K. L. McDuffie, R. E Arrendale, G. R. Gwynn, and J. F. Chaplin: Rapid method for the analysis of tobacco nicotine alkaloids; J. Chroma-togr. 211 (1981) 111-121.
- 18. Mirvish, S. S., L. Wallcave, M. Eagen, and E Shubik: Ascorbate-nitrate reaction: Possible means of blocking the formation of carcinogenic 7V-nitroso compounds; Science 177 (1972) 65-68.
- 19. Severson, R. F., R. E Arrendale, and O. T. Chortyk: Simple conversion of two standard gas chromato-graphs to all-glass capillary systems; J. High Resolut. Chromatogr. Communic. 3 (1980) 11-15.