Abstract
Selective thinning of forests in the western United States will generate a large, sustainable quantity of softwood residues that can be an attractive feedstock for fuel ethanol production. The major species available from thinning of forests in northern California and the eastern Rocky Mountains include white fir (Abies concolor), Douglas fir (Pseudotsuga menziesii), and Ponderosa pine (Pinus ponderosa). Douglas fir chips were soaked in 0.4% sulfuric acid solution, then pretreated with steam at 200-230°C for 1-5 min. After pretreatment, 90-95% of the hemicellulose and as much as 20% of the cellulose was solubilized in water, and 90% of the remaining cellulose can be hydrolyzed to glucose by cellulase enzyme. The prehydrolysates, at as high as 10% total solid concentration, can be readily fermented by the unadapted yeast Saccharomyces cerevisiae D5A.
Author to whom all correspondence and reprint requests should be addressed.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Schwald, W., Smaridge, T., Chan, M., Bruil, C., and Saddler, J. N. (1989), in Enzyme Systems for Lignocellulose Degradation, Coughlan, M. P., ed., Elsevier, New York, pp. 231–242.
Clark, T. A. and Mackie, K. L. (1987), J. Wood Chem. Technol. 7(3), 373–403.
TAPPI Test Methods (1991), T 210 cm-86, Weighing, Sampling, and Testing Pulp for Moisture, TAPPI, Atlanta, GA.
Moore, W. E. and Johnson, D. B. (1967), Procedures for the Chemical Analysis of Wood and Wood Products, Forest Products Laboratory, US Department of Agriculture, Madison, WI.
TAPPI Test Methods (1994-1995), T 222 om-88, Acid-Insuluble Lignin in Wood and Pulp, TAPPI, Atlanta, GA.
Grohmann, K., Himmel, M., Rivard, C., Tucker, M., Baker, J., Torget, R., and Graboski, M. (1984), Biotechnol. Bioeng. Symp. 14, 137.
TAPPI Test Methods (1991), T 211 om-85, Ash in Wood and Pulp, TAPPI, Atlanta, GA.
Ehrman, C. I..and Himmel, M. E. (1994), Biotechnol. Techniques 87(2), 99–104.
Ghose, T. K. (1987), Pure Appl. Chem. 59, 257–268.
Grohmann, K., Torget, R., and Himmel, M. (1986), Biotechnolo. Bioeng. Symp. 17, 135–151.
Keller, F. A., Bates, D., Ruiz R., and Nguyen, Q., Nineteenth Symposium on Biotechnology for Fuels and Chemicals, Colorado Springs, Colorado, May 4-8, 1997.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1998 Springer Science+Business Media New York
About this chapter
Cite this chapter
Nguyen, Q.A., Tucker, M.P., Boynton, B.L., Keller, F.A., Schell, D.J. (1998). Dilute Acid Pretreatment of Softwoods Scientific Note . In: Finkelstein, M., Davison, B.H. (eds) Biotechnology for Fuels and Chemicals. Applied Biochemistry and Biotechnology. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-4612-1814-2_8
Download citation
DOI: https://doi.org/10.1007/978-1-4612-1814-2_8
Publisher Name: Humana Press, Totowa, NJ
Print ISBN: 978-1-4612-7295-3
Online ISBN: 978-1-4612-1814-2
eBook Packages: Springer Book Archive