[1. Weeks, W.W.: Relationship between leaf chemistry and organoleptic properties of tobacco smoke; in: Tobacco: Production, chemistry and technology, edited by D.L. Davis and M.T. Nielsen, Blackwell Science, Oxford, 1999, pp. 304-312.]Search in Google Scholar
[2. Moldoveanu, S.C. and V. David: Sample preparation in chromatography; Elsevier, Amsterdam, 2002, pp. 789–814.10.1016/S0301-4770(02)80007-0]Search in Google Scholar
[3. Lunn, G. and L.C. Hellwig: Handbook of derivatization reactions for HPLC; John Wiley, New York, 1998, pp. 625–819.]Search in Google Scholar
[4. de la Burde, R., E.H. Poindexter Jr., and J.P. Bell: The distribution of amino acids in tobaccos from different stalk regions; Tob. Sci. 9 (1965) 26–32.]Search in Google Scholar
[5. Noguchi, M., K. Yamamoto, and E. Tamaki: Studies on nitrogen metabolism in tobacco plants. A. Part V. Changes in the free amino acid composition of tobacco leaves with age; Tob. Sci. 8 (1964) 8–12.]Search in Google Scholar
[6. Tso, T.C. and M.E. Engelhaupt: Amino acid content to gradual development of calcium and boron deficiency symptoms in tobacco plant; Tob. Sci. 7 (1963) 12–16.]Search in Google Scholar
[7. Li, P., M. Wu, and J. Xie: Changes in levels of amino acids and basic components in burley tobacco produced by roasting; Beitr. Tabakforsch. Int. 20 (2003) 459–466.]Search in Google Scholar
[8. Petridis, K., C. Elfakir, and M. Dreux: HPLC-CLND for the analysis of underivatized amino acids; LC-GC Europe 14 (2001) 389–390.]Search in Google Scholar
[9. Petridis, K., C. Elfakir, and M. Dreux: HPLC-CLND for the analysis of underivatized amino acids; LC-GC Europe 14 (2001) 392–395.]Search in Google Scholar
[10. Wathelet, B.: Nutritional analysis for proteins and amino acids in beans (Phaseolus sp.); Biotechnol. Agron. Soc. Environ. 3 (1999) 197–200.]Search in Google Scholar
[11. Xie, F.W.: OPA (o-phenyldialdehyde) auto precolumn derivatization reverse phase high performance liquid chromatography; 3rd National Member's Congress of China Tobacco Society, 1996, pp. 208–218.]Search in Google Scholar
[12. Cohen, S.A. and D.P. Michaud: Synthesis of a fluores-cent reagent, 6-aminoquinolyl-N-hydrazosuccinimidyl carbamate, and its application for the analysis of hydrolysate amino acids with high performance liquid chromatography; Anal. Biochem. 211 (1993) 279–287.]Search in Google Scholar
[13. Cohen, S.A., M. Meys, and T.L. Tarvin: The pico tag method, a manual of advanced techniques for amino acid analysis; Waters, Milford, MA 01757, 2003.]Search in Google Scholar
[14. Burch, T.H., J.H. Lauterbach, and S.C. Moldoveanu: Comparative study of several methods for the deter-mination of free amino acids in tobacco; 44th Tobacco Chem. Res. Conf., Program Booklet and Abstracts No. 15, p. 18, Winston-Salem, 1990.]Search in Google Scholar
[15. Mawhinney, T.P., R.S.R. Robinett, A. Atalay, and M.A. Madson: Analysis of amino acids as their t-butyldi-methylsilyl derivatives by gas-liquid chromatography and mass spectrometry; J. Chromatogr. 358 (1986) 231–242.]Search in Google Scholar
[16. Husek, P., Quantitation of amino acids as chloroformates – A return to gas chromatography; in: Quantitation of amino acids and amines by chromatography, edited by I. Molnar-Perl, Elsevier, Amsterdam, 2005, pp. 2–38.10.1016/S0301-4770(05)80003-X]Search in Google Scholar
[17. Makita, M., S. Yamamoto, and M. Kono: Gas-liquid chromatographic analysis of protein amino acids as N-isobutyloxycarbonylamino acid methyl esters; J. Chromatogr. 120 (1976) 129–140.]Search in Google Scholar
[18. Makita, M., S., Yamamoto, K. Sakai, and M. Shiraishi: Gas-liquid chromatography of the N-isobutyloxy-carbonyl methyl esters of non-protein amino acids; J. Chromatogr. 124 (1976) 92–96.]Search in Google Scholar
[19. Jellum, E., V.A. Close, W. Patton, W. Pereira, and B. Halpern: A gas-liquid chromatographic method for the determination of phenylalanine in serum; Anal. Biochem. 31 (1969) 227–234.]Search in Google Scholar
[20. Leffingwell, J.C.: Nitrogen component of leaf and their relationship to smoking quality and aroma; Rec. Adv. Tob. Sci. Vol. 2 (1976) 1–31.]Search in Google Scholar
[21. Ward, L.D., G.E. Reid, R.L. Moritz, and R.J. Simpson: Strategies for internal amino acid sequence analysis of proteins separated by polyacrylamide gel electropho-resis; J. Chromatogr. 519 (1990) 199–216.]Search in Google Scholar
[22. West, K.A. and J.W. Crabb: Performance evaluation of automatic hydrolysis and PTC amino acid analysis; in: Current research in protein chemistry, edited by J.J. Villafranca, Academic Press, 1990, pp. 37–48.10.1016/B978-0-12-721955-4.50010-5]Search in Google Scholar
[23. Crabb, J.W., L. Ericsson, D. Atherton, A.J. Smith, and R. Kunty: A collaborative amino acid analysis study from the Association of Biomolecular Resource Facili-ties; in: Current research in protein chemistry, edited by J.J. Villafranca, Academic Press, 1990, pp. 49–61.10.1016/B978-0-12-721955-4.50011-7]Search in Google Scholar
[24. Strydom, D.J., T.T. Andersen, I. Apostol, J.W. Fox, R.J. Paxton, and J.W. Crabb: Cysteine and tryptophan amino acid analysis of ABRF92-AAA; in: Techniques in protein chemistry IV, edited by R.H. Angeletti, Academic Press, 1993, pp. 279–288.10.1016/B978-0-12-058757-5.50035-4]Search in Google Scholar
[25. Tarr, G.E., R.J. Paxton, Y.E. Pan, L.H. Ericsson, and J.W. Crabb: Amino acid analysis 1990: The third colla-borative study from the Association of Biomolecular Resource Facilities; in: Current research in protein chemistry, edited by J.J. Villafranca, Academic Press, 1990, 139–149.]Search in Google Scholar
[26. Chiou, S.H. and K.T. Wang: Peptide and protein hydrolysis by microwave irradiation; J. Chromatogr. 491 (1989) 424–431.]Search in Google Scholar
[27. Chen, P.X., N. Qian, H.R. Burton, and S.C. Moldoveanu: Analysis of minor alkaloids in tobacco: a collaborative study; Beitr. Tabakforsch. Int. 21 (2005) 369–379.]Search in Google Scholar
[28. Byrd, C.H. and L.M. Dominguez: R.J. Reynolds Tobacco Co., personal communication.]Search in Google Scholar
[29. Haynes, P.A., D. Sheumack, L.G. Grieg, J. Libby, and J.W. Redmond: Applications of automated amino acid analysis using 9-fluorenylmethyl chloroformate; J. Chromatogr. 588 (1991) 107–114.]Search in Google Scholar
[30. Dominguez, L.M., C.H. Byrd, and J.W. Marshall: Free amino acids and nicotine in burley tobaccos; 56th Tobacco Science Research Conference, Program Booklet and Abstracts No. 21, p. 30, Lexington, KY, 2002.]Search in Google Scholar