Abstract
Effective utilization of the lignin by-product is a prerequisite to the commercial viability of ethanol production from softwood wastes using a steam explosion (SE)Jenzymatic hydrolysis (EH)Jfermentation process. Changes in the chemical composition of Douglas fir wood on SO2-catalyzed SE followed by EH were assessed using conventional analytical methods and new halogen-probe techniques. A significant solubilization of hemicelluloses was observed in the SE stage, the severity of which affected subsequent fermentation of cellulose and sorption of enzymes. SE of softwood resulted in dramatic changes in the chemical structure of lignin in the residual material involving chemical reactions via the benzyl cation. This leads to a more condensed lignin with partly blocked α-reaction centres. Possible uses for this lignin are discussed.
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References
Saddler, J. N., Ramos, L. P., and Breuil, C. (1993), in Bioconversion of Forest and Agricultural Plant Residues, C. A. B. International, Wallingford, UK, pp. 73–91.
Gregg, D. and Saddler, J. N. (1995), Appl. Biochem. Biotechnol. 57/58, 711–727.
Saddler, J. N., Brownell, H. H., Clermont, L. P., and Levitin, N. (1982), Biotechnol. Bioeng. 24, 1389–1402.
Brownell, H. H. and Saddler, J. N. (1984), Biotechnol. Bioeng. Symp. 14, 55–68.
Lee, D., Yu, A. H. C., and Saddler, J. N. (1995), Biotechnol. Bioeng. 45, 328–336.
Marchessault, R. H., Coulombe, S., Morikawa, H., and Robert, D. (1981), Can. j. Chem. 60, 2372–2382.
Sudo, K., Shimizu, K., and Sakurai, K. (1985), Holzforschung 29, 281–288.
Lapierre, C., Pollet, B., and Rolando, C. (1995), in Proceedings of the 8th International Symposium on Wood and Pulping Chemistry, vol. 1, Helsinki, Finland, pp. 131–138.
Robert, D., Bardet, M., Lapierre, C., and Gellerstedt, G. (1988), Cellulose Chem. Technol. 22, 221–230.
Hemmingson, J. A. (1987), J Wood Chem. Technol. 7, 527–553.
Heitz, M., Capek-Menard, E., Koeberle, P. G., Gagne, J., Chornet, E., Overend, R. P., Taylor, J. D., and Yu, E. (1991), Bioresource Technol. 35, 23–32.
Shevchenko, S. M., Akim, L. G., Apushkinsky, A. G., and Gindin, V. A. (1991), Chem. Papers 45, 109–118.
Shevchenko, S. M., Bailey, G. W., Yu, S. Y., and Akim, L. G. (1996), TAPPIJ. 79(3), 227–237.
Schwald, W., Smaridge, T., Chan, M., Breuil, C., and Saddler, J. N. (1989), in Enzyme Systems for Lignocellulosic Degradation, Coughlan, M. P., ed., Elsevier, New York, pp. 231–242.
Ooshima, H., Burns, D. S., and Converse, A. O. (1990), Biotechnol. Bioeng. 36, 446–452.
Shevchenko, S. M., Akim, L. G., Tanahashi, M., and Higuchi, T. (1995), J Wood Chem. Technol. 15, 163–178.
Chudakov, M. I. (1983), Industrial Utilization of Lignin, Les. Prom., Moscow, Russia.
Shevchenko, S. M. and Bailey, G. W. (1996), Crit. Rev. Envir. Sci. Technol. 26, 95–153.
Telysheva, G. M., and Pankova, R. E. (1978), Lignin-Based Fertilizers, Zinatne, Riga, Latvia.
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Shevchenko, S.M., Beatson, R.P., Saddler, J.N. (1999). The Nature of Lignin from Steam Explosion/Enzymatic Hydrolysis of Softwood. In: Davison, B.H., Finkelstein, M. (eds) Twentieth Symposium on Biotechnology for Fuels and Chemicals. Applied Biochemistry and Biotechnology. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-4612-1604-9_79
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DOI: https://doi.org/10.1007/978-1-4612-1604-9_79
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