BioEnergy Research

, Volume 4, Issue 4, pp 246–257 | Cite as

Routes to Potential Bioproducts from Lignocellulosic Biomass Lignin and Hemicelluloses

  • Xiao ZhangEmail author
  • Maobing Tu
  • Michael G. Paice


An essential feature of proposed fermentation-based lignocellulose to biofuel conversion processes will be the co-production of higher value chemicals from lignin and hemicellulose components. Over the years, many routes for chemical conversion of lignin and hemicelluloses have been developed by the pulp and paper industry and we propose that some of these can be applied for bioproducts manufacturing. For lignin products, thermochemical, chemical pulping, and bleaching methods for production of polymeric and monomeric chemicals are reviewed. We conclude that peroxyacid chemistry for phenol and ring-opened products looks most interesting. For hemicellulose products, preextraction of hemicelluloses from woody biomass is important and influences the mixture of solubilized material obtained. Furfural, xylitol, acetic acid, and lactic acid are possible targets for commercialization, and the latter can be further converted to acrylic acid. Pre-extraction of hemicelluloses can be integrated into most biomass-to-biofuel conversion processes.


Lignocellulosic biomass Lignin Hemicellulose Extraction Bioproducts Conversion Biofuel Pulp and paper 


  1. 1.
    Davin LB, Patten AM, Jourdes M, Lewis NG (2008) Lignins: a twenty first century challenge. In: Himmel ME (ed) Biomass recalcitrance deconstructing the plant cell wall for bioenergy. Blackwell, Oxford, pp 213–305Google Scholar
  2. 2.
    Fengel D, Wegener G (1984) Wood: chemistry, ultrastructure, reactions. Gruyter, New YorkGoogle Scholar
  3. 3.
    Sjöström E (1993) Wood chemistry: fundamentals and applications, 2nd edn. Academic, San DiegoGoogle Scholar
  4. 4.
    Pye KE (2006) Biorefineries—industrial processes and products. In: Gruber PR, Kamm M (eds) B Kamm. Wiley, Germany, pp 165–200Google Scholar
  5. 5.
    Bizzari SN, Janshekar H, Yokose K (2009) Lignosulfonates, CEH Marteking Research Report, SRI ConsultingGoogle Scholar
  6. 6.
    Holladay JE, Bozell JJ, White JF, Johnson D (2007) Top value-added chemicals from biomass: volume II—results of screening for potential candidates from biorefinery lignin. US Department of Energy, New YorkCrossRefGoogle Scholar
  7. 7.
    Gargulak JD, Lebo SE (2000) Lignin: historical, biological, and materials perspectives, chapter 15, pp 304–320, ACS symposium series no. 742., In: WG Glasser, RA Northey, and TP Schultz (eds). Washington, D.C.Google Scholar
  8. 8.
    Otani S, Fukuoka Y, Igarashi B, Sasaki K (1969) Method for producing carbonized lignin fiber, US patent 3461082.Google Scholar
  9. 9.
    Sudo K, Shimizu K, Nakashima N, Yokoyama A (1993) A new modification method of exploded lignin for the preparation of a carbon-fiber precursor. J Appl Polym Sci 48:1485–1491CrossRefGoogle Scholar
  10. 10.
    Sudo K, Shimizu K (1992) A new carbon-fiber from lignin. J Appl Polym Sci 44:127–134CrossRefGoogle Scholar
  11. 11.
    Pickel JM, Griffith WL, Compere AL (2006) Utilization of lignin in the production of low-cost carbon fiber. Abstracts of Papers of the American Chemical Society, 231–238.Google Scholar
  12. 12.
    Kubo S, Kadla JF (2005) Lignin-based carbon fibers: effect of synthetic polymer blending on fiber properties. J Polym Environ 13:97–105CrossRefGoogle Scholar
  13. 13.
    Kadla JF, Kubo S, Venditti RA, Gilbert RD, Compere AL, Griffith W (2002) Lignin-based carbon fibers for composite fiber applications. Carbon 40:2913–2920CrossRefGoogle Scholar
  14. 14.
    Gellerstedt G, Sjöholm E, Brodin I (2010) The wood-based biorefinery: a source of carbon fiber? Open Agric J 3:119–124Google Scholar
  15. 15.
    Hu TQ (2002) Chemical modification, properties, and usage of lignin. Kluwer, New YorkCrossRefGoogle Scholar
  16. 16.
    Li Y, Sarkanen S (2000) Lignin—historical, biological, and materials perspectives. Glasser WG, Northey RA, Schultz TP (eds). ACS Symp Ser 742:351–366CrossRefGoogle Scholar
  17. 17.
    Gandini A, Belgacem MN (2008) Monomers, polymers and composites from renewable resources. In: MN Belgacem and A Gandini (eds.). Elsevier: New YorkGoogle Scholar
  18. 18.
    Vainio U, Maximova N, Hortling B, Laine J, Stenius P, Simola LK et al (2004) Morphology of dry lignins and size and shape of dissolved kraft lignin particles by X-ray scattering. Langmuir 20:9736–9744PubMedCrossRefGoogle Scholar
  19. 19.
    Kozlowski R, Zimniewska M, Batog J (2008) Cellulose fibre textiles containing nanolignins, a method of applying nanolignins onto the textile and the use of nanolignins in textile production. World Patent WO 2008/140337 A1.Google Scholar
  20. 20.
    Whiting DA (2001) Natural phenolic compounds 1900–2000: a bird's eye view of a century's chemistry. Nat Prod Rep 18:583–606PubMedCrossRefGoogle Scholar
  21. 21.
    Boudet AM (2007) Evolution and current status of research in phenolic compounds. Phytochemistry 68:2722–2735PubMedCrossRefGoogle Scholar
  22. 22.
    Nicholson RL, Hammerschmidt R (1992) Phenolic compounds and their role in disease resistance. Annu Rev Phytopathol 30:369–389CrossRefGoogle Scholar
  23. 23.
    Higuchi T (1982) Biodegradation of lignin—biochemistry and potential applications. Experientia 38:159–166CrossRefGoogle Scholar
  24. 24.
    Raja PB, Sethuraman MG (2008) Natural products as corrosion inhibitor for metals in corrosive media—a review. Mater Lett 62:113–116CrossRefGoogle Scholar
  25. 25.
    Meier D, Ante R, Faix O (1992) Catalytic hydropyrolysis of lignin—influence of reaction conditions on the formation and composition of liquid products. Bioresour Technol 40:171–177CrossRefGoogle Scholar
  26. 26.
    Thring RW, Breau J (1996) Hydrocracking of solvolysis lignin in a batch reactor. Fuel 75:795–800CrossRefGoogle Scholar
  27. 27.
    Takeyama H, Sasaya T (1987) Hydrocracking of solvolysis lignin 2. Mokuzai Gakkaishi 33:212–217Google Scholar
  28. 28.
    Davoudzadeh F, Smith B, Avni E, Coughlin RW (1985) Depolymerization of lignin at low-pressure using Lewis acid catalysts and under high-pressure using hydrogen donor solvents. Holzforschung 39:159–166CrossRefGoogle Scholar
  29. 29.
    Vuori A, Niemela M (1988) Liquefaction of kraft lignin. 2. Reactions with a homogeneous Lewis acid catalyst under mild reaction conditions. Holzforschung 42:327–334CrossRefGoogle Scholar
  30. 30.
    Hepditch MM, Thring RW (2000) Degradation of solvolysis lignin using Lewis acid catalysts. Can J Chem Eng 78:226–231CrossRefGoogle Scholar
  31. 31.
    Kudsy M, Kumazawa H (1999) Pyrolysis of kraft lignin in the presence of molten ZnCl2–KCl mixture. Can J Chem Eng 77:1176–1184CrossRefGoogle Scholar
  32. 32.
    Caballero JA, Font R, Marcilla A (1997) Pyrolysis of kraft lignin: yields and correlations. J Anal Applied Pyrol 39:161–183CrossRefGoogle Scholar
  33. 33.
    Kudsy M, Kumazawa H, Sada E (1995) Pyrolysis of kraft lignin in molten Zncl2–Kcl media with tetralin vapor addition. Can J Chem Eng 73:411–415CrossRefGoogle Scholar
  34. 34.
    Kleinert M, Barth T (2008) Phenols from lignin. Chem Eng Technol 31:736–745CrossRefGoogle Scholar
  35. 35.
    Vigneault A, Johnson DK, Chornet E (2007) Base-catalyzed depolymerization of lignin: separation of monomers. Can J Chem Eng 85:906–916CrossRefGoogle Scholar
  36. 36.
    Shabtai JS, Zmierczak WW, Chornet E (1999) Process for conversion of lignin to reformulated hydrocarbon gasoline. US patent 6172272.Google Scholar
  37. 37.
    Shabtai JS, Zmierczak WW, Chornet E (2001) Process for conversion of lignin to reformulated, partially oxygenated gasoline. US patent 6172272.Google Scholar
  38. 38.
    Pye EK, Lora JH (1991) The Alcell process—a proven alternative to kraft pulping. Tappi J 74:113–118Google Scholar
  39. 39.
    Binder JB, Gray MJ, White JF, Zhang ZC, Holladay JE (2009) Reactions of lignin model compounds in ionic liquids. Biomass Bioenerg 33:1122–1130CrossRefGoogle Scholar
  40. 40.
    Kleinert M, Barth T (2008) Towards a lignincellulosic biorefinery: direct one-step conversion of lignin to hydrogen-enriched biofuel. Energy Fuels 22:1371–1379CrossRefGoogle Scholar
  41. 41.
    Mohan D, Pittman CU, Steele PH (2006) Pyrolysis of wood/biomass for bio-oil: a critical review. Energy Fuels 20:848–889CrossRefGoogle Scholar
  42. 42.
    Ferdous D, Dalai AK, Bej SK, Thring RW, Bakhshi NN (2001) Production of H-2 and medium Btu gas via pyrolysis of lignins in a fixed-bed reactor. Fuel Process Technol 70:9–26CrossRefGoogle Scholar
  43. 43.
    Serrano-Ruiz JC, West RM, Dumesic JA (2010) Catalytic conversion of renewable biomass resources to fuels and chemicals. Ann Rev Chem Biomol Eng 1(1):79–100CrossRefGoogle Scholar
  44. 44.
    Jones S, Zhu Y (2009) Preliminary economics for the production of pyrolysis oil from lignin in a cellulosic ethanol biorefinery. PNNL-18401. Pacific Northwest National Laboratory: Richland, WA.Google Scholar
  45. 45.
    Zakzeski J, Bruijnincx PCA, Jongerius AL, Weckhuysen BM (2010) The catalytic valorization of lignin for the production of renewable chemicals. Chem Rev 110:3552–3599PubMedCrossRefGoogle Scholar
  46. 46.
    Chakar FS, Ragauskas AJ (2004) Review of current and future softwood kraft lignin process chemistry. Ind Crop Prod 20:131–141CrossRefGoogle Scholar
  47. 47.
    Gierer J (1985) Chemistry of delignification. 1. General concept and reactions during pulping. Wood Sci Technol 19:289–312Google Scholar
  48. 48.
    Robert DR, Bardet M, Gellerstedt G, Lindfors EL (1984) Structural changes in lignin during kraft cooking. 3. On the structure of dissolved lignins. J Wood Chem Technol 4:239–263CrossRefGoogle Scholar
  49. 49.
    Baptista C, Robert D, Duarte AP (2008) Relationship between lignin structure and delignification degree in Pinus pinaster kraft pulps. Bioresour Technol 99:2349–2356PubMedCrossRefGoogle Scholar
  50. 50.
    Wang PQ, Wang LQ, Quan JY (1999) The application of a new plant growth regulator (ASL) on agriculture and forestry. J Nanjing Forest Univ (Natural Science Edition) 23(4):1–6Google Scholar
  51. 51.
    Argyropoulos D (2001) Oxidative delignification chemistry: fundamentals and catalysis, ACS Symposium series 785. American Chemical Society.Google Scholar
  52. 52.
    Dence CW, Reeve DW (1996) Pulp bleaching: principles and practice. Atlanta GA, TappiGoogle Scholar
  53. 53.
    Corma A, Iborra S, Velty A (2007) Chemical routes for the transformation of biomass into chemicals. Chem Rev 107:2411–2502PubMedCrossRefGoogle Scholar
  54. 54.
    Draths KM, Frost JW (1994) Environmentally compatible synthesis of adipic acid from d-glucose. J Am Chem Soc 116:399–400CrossRefGoogle Scholar
  55. 55.
    Niu W, Draths KM, Frost JW (2002) Benzene-free synthesis of adipic acid. Biotechnol Prog 18:201–211PubMedCrossRefGoogle Scholar
  56. 56.
    She XY, Brown HM, Zhang X, Ahring BK, Wang Y (2011) Selective hydrogenation of trans, trans-muconic acid to adipic acid over a titania-supported rhenium catalyst. Chemsuschem. doi: 10.1002/cssc.201100020
  57. 57.
    Suchy M, Argyropoulos DS (2001) In: Argyropoulos DS (ed) Oxidative delignification chemistry fundamentals and catalysis. Oxford University Press, Washington DC, pp 2–43CrossRefGoogle Scholar
  58. 58.
    Gierer J (1986) Chemistry of delignification. 2. Reactions of lignins during bleaching. Wood Sci Technol 20:1–33CrossRefGoogle Scholar
  59. 59.
    Sundquist J, Poppius-Levlin K (1997) In: Young RA, Akhtar M (eds) Environmentally friendly technologies for the pulp and paper industry. Wiley, New York, pp 157–190Google Scholar
  60. 60.
    Johnson D (1975) Lignin reactions in delignification with peroxyacetic acid. 1st International Symposium on Delignification with Oxygen, Ozone and Peroxides, pp. 217–228. Raeigh, NC, USA.Google Scholar
  61. 61.
    Kadla JF, Chang H-M (2001) In: Argyropoulos DS (ed) Oxidative delignification chemistry. Oxford University Press, Washington DC, pp 108–129CrossRefGoogle Scholar
  62. 62.
    Reid I, Bourbonnais R, Paice M (2010) Lignin and lignans—advances in chemistry. In: Heitner C, Dimmel D, Schmidt JA (eds). CRC: Boca Raton, FL. pp. 521–554.Google Scholar
  63. 63.
    Ezeji T, Qureshi N, Blaschek HP (2007) Butanol production from agricultural residues: impact of degradation products on Clostridium beijerinckii growth and butanol fermentation. Biotechnol Bioeng 97:1460–1469PubMedCrossRefGoogle Scholar
  64. 64.
    Qureshi N, Sahaa BC, Hector RE, Hughes SR, Cotta MA (2008) Butanol production from wheat straw by simultaneous saccharification and fermentation using Clostridium beijerinckii: part I—batch fermentation. Biomass Bioenerg 32:168–175CrossRefGoogle Scholar
  65. 65.
    Martinez A, Rodriguez ME, Wells ML, York SW, Preston JF, Ingram LO (2001) Detoxification of dilute acid hydrolysates of lignocellulose with lime. Biotechnol Prog 17:287–293PubMedCrossRefGoogle Scholar
  66. 66.
    Yoon SH, Macewan K, Van Heiningen A (2008) Hot-water pre-extraction from loblolly pine (Pinus taeda) in an integrated forest products biorefinery. Tappi J 7:27–32Google Scholar
  67. 67.
    Kim KH, Tucker MP, Keller FA, Aden A, Nguyen QA (2001) Continuous countercurrent extraction of hemicellulose from pretreated wood residues. Appl Biochem Biotech 91–3:253–267CrossRefGoogle Scholar
  68. 68.
    Sattler C, Labbe N, Harper D, Elder T, Rials T (2008) Effects of hot water extraction on physical and chemical characteristics of oriented strand board (OSB) wood flakes. Clean-Soil Air Water 36:674–681CrossRefGoogle Scholar
  69. 69.
    Al-Dajani WW, Tschirner UW (2008) Pre-extraction of hemicelluloses and subsequent kraft pulping. Part I: alkaline extraction. Tappi J 7:3–8Google Scholar
  70. 70.
    Springer EL, Harris JF (1982) Prehydrolysis of aspen wood with water and with dilute aqueous sulfuric acid. Svensk Papperstidning 85:152–154Google Scholar
  71. 71.
    Conner AH (1984) Kinetic modeling of hardwood prehydrolysis. 1. Xylan removal by water prehydrolysis. Wood Fiber Sci 16:268–277Google Scholar
  72. 72.
    Conner AH, Libkie K, Springer EL (1985) kinetic modeling of hardwood prehydrolysis. 2. Xylan removal by dilute hydrochloric acid prehydrolysis. Wood and Fiber Science 17:540–548Google Scholar
  73. 73.
    Conner AH, Lorenz LF (1986) kinetic modeling of hardwood prehydrolysis. 3. Water and dilute acetic-acid prehydrolysis of Southern Red Oak. Wood and Fiber Science 18:248–263Google Scholar
  74. 74.
    Nguyen QA, Tucker MP, Keller FA, Eddy FP (2000) Two-stage dilute-acid pretreatment of softwoods. Appl Biochem Biotechnol 84–6:561–576CrossRefGoogle Scholar
  75. 75.
    Lundqvist J, Teleman A, Junel L, Zacchi G, Dahlman O, Tjerneld F et al (2002) Isolation and characterization of galactoglucomannan from spruce (Picea abies ). Carbohydr Polym 48:29–39CrossRefGoogle Scholar
  76. 76.
    Lundqvist J, Jacobs A, Palm M, Zacchi G, Dahlman O, Stalbrand H (2003) Characterization of galactoglucomannan extracted from spruce (Picea abies) by heat-fractionation at different conditions. Carbohydr Polym 51:203–211CrossRefGoogle Scholar
  77. 77.
    Radiotis T, Zhang X, Paice M, Byrne V (2010) Optimizing production of xylose and xylooligomers from wood chips (in press). FPInnovations Research Report PRR 1929, October 2010Google Scholar
  78. 78.
    Yoon SH, Cullinan HT, Krishnagopalan GA (2010) Reductive modification of alkaline pulping of southern pine, integrated with hydrothermal pre-extraction of hemicelluloses. Ind Eng Chem Res 49:5969–5976CrossRefGoogle Scholar
  79. 79.
    Walton SL, Hutto D, Genco JM, van Walsum GP, van Heiningen ARP (2010) Pre-extraction of hemicelluloses from hardwood chips using an alkaline wood pulping solution followed by kraft pulping of the extracted wood chips. Ind Eng Chem Res 49:12638–12645CrossRefGoogle Scholar
  80. 80.
    Bozell JJ, Petersen GR (2010) Technology development for the production of biobased products from biorefinery carbohydrates—the US Department of Energy's "Top 10" revisited. Green Chem 12:539–554CrossRefGoogle Scholar
  81. 81.
    Werpy T, Petersen G (2007) Top value added chemicals from biomass volume i: results of screening for potential candidates from sugars and synthesis gas. Pacific Northwest National Laboratory (PNNL) and National Renewable Energy Laboratory (NREL).Google Scholar
  82. 82.
    Chheda JN, Roman-Leshkov Y, Dumesic JA (2007) Production of 5-hydroxymethylfurfural and furfural by dehydration of biomass-derived mono- and poly-saccharides. Green Chem 9:342–350CrossRefGoogle Scholar
  83. 83.
    Tong X, Ma Y, Li Y (2010) Biomass into chemicals: conversion of sugars to furan derivatives by catalytic processescess. Appl Catal a-Gen 385:1–13CrossRefGoogle Scholar
  84. 84.
    Zeitsch KJ (2000) The chemistry and technology of furfural and its many by-products. ISBN 9780444503510 ed. New York: ElsevierGoogle Scholar
  85. 85.
    Sain B, Chaudhuri A, Borgohain JN, Baruah BP, Ghose JL (1982) Furfural and furfural-based industrial chemicals. J Sci Ind Res 41:431–438Google Scholar
  86. 86.
    Hoydonckx HE, Van Rhijn WM, Van Rhijn W, De Vos DE, Jacobs PA (2007) Ullmann's encyclopedia of industrial chemistry. Wiley, New YorkGoogle Scholar
  87. 87.
    Win DT (2005) Furfural-gold from garbage. AU J Technol 8:185–190Google Scholar
  88. 88.
    Marinova M, Mateos-Espejel E, Paris J (2010) From kraft mill to forest biorefinery: an energy and water perspective. II. Case study. Cellul Chem Technol 44:21–26Google Scholar
  89. 89.
    D'Amico E (2009) Danisco issues profit warning; curtails xylitol production. Chemical Week, March 9 Google Scholar
  90. 90.
    Aachary AA, Prapulla SG (2011) Xylooligosaccharides (XOS) as an emerging prebiotic: microbial synthesis, utilization, structural characterization, bioactive properties, and applications. Compr Rev Food Sci Food Saf 10:2–16CrossRefGoogle Scholar
  91. 91.
    Bozell JJ (2008) Feedstocks for the future—biorefinery production of chemicals from renewable carbon. Clean-Soil Air Water 36:641–647CrossRefGoogle Scholar
  92. 92.
    Hermann BG, Patel M (2007) Today's and tomorrow's bio-based bulk chemicals from white biotechnology—a techno-economic analysis. Appl Biochem Biotechnol 136:361–388PubMedCrossRefGoogle Scholar
  93. 93.
    Manzer, LE (2006) Biomass derivatives: a sustainable source of chemicals. In: Feedstocks for the future: renewables for the production of chemicals and materials, 921. pp 40–51.Google Scholar
  94. 94.
    Nikolau BJ, Perera MADN, Brachova L, Shanks B (2008) Platform biochemicals for a biorenewable chemical industry. Plant J 54:536–545PubMedCrossRefGoogle Scholar
  95. 95.
    Patel M, Ou M, Ingram LO, Shanmugam KT (2004) Fermentation of sugar cane bagasse hemicellulose hydrolysate to L(+)-lactic acid by a thermotolerant acidophilic Bacillus sp. Biotechnol Lett 26:865–868PubMedCrossRefGoogle Scholar
  96. 96.
    Moldes AB, Torrado A, Converti A, Dominguez JM (2006) Complete bioconversion of hemicellulosic sugars from agricultural residues into lactic acid by Lactobacillus pentosus. Appl Biochem Biotech 135:219–227CrossRefGoogle Scholar
  97. 97.
    Iyer PV, Thomas S, Lee YY (2000) High-yield fermentation of pentoses into lactic acid. Appl Biochem Biotech 84–6:665–677CrossRefGoogle Scholar
  98. 98.
    Huang JR, Li WS, Zhou XP (2010) Preparation of lactic acid from glucose in ionic liquid solvent system. J Cent South Univ T 17:45–49CrossRefGoogle Scholar
  99. 99.
    Onda A, Ochi T, Kajiyoshi K, Yanagisawa K (2008) A new chemical process for catalytic conversion Of D-glucose into lactic acid and gluconic acid. Appl Catal a-Gen 343:49–54CrossRefGoogle Scholar
  100. 100.
    Holm MS, Saravanamurugan S, Taarning E (2010) Conversion of sugars to lactic acid derivatives using heterogeneous zeotype catalysts. Science 328:602–605PubMedCrossRefGoogle Scholar
  101. 101.
    Onda A, Ochi T, Kajiyoshi K, Yanagisawa K (2008) Lactic acid production from glucose over activated hydrotalcites as solid base catalysts in water. Catal Commun 9:1050–1053CrossRefGoogle Scholar
  102. 102.
    West RM, Holm MS, Saravanamurugan S, Xiong JM, Beversdorf Z, Taarning E et al (2010) Zeolite H-USY for the production of lactic acid and methyl lactate from C-3-sugars. J Catal 269:122–130CrossRefGoogle Scholar
  103. 103.
    Holmen RE (1958) Production of acrylates by catalytic dehydration of lactic acid and alkyl lactates. US Patent 2,959,240Google Scholar
  104. 104.
    Sawicki RA (1998) Catalyst for dehydration of lactic acid to acrylic acid. US Patent 4,729,978.Google Scholar
  105. 105.
    Varadarajan S, Miller DJ (1999) Catalytic upgrading of fermentation-derived organic acids. Biotechnol Progr 15:845–854CrossRefGoogle Scholar
  106. 106.
    Aida TM, Ikarashi A, Saito Y, Watanabe M, Smith RL, Arai K (2009) Dehydration of lactic acid to acrylic acid in high temperature water at high pressures. J Supercrit Fluid 50:257–264CrossRefGoogle Scholar
  107. 107.
    Paparizos CD, Serge R, Shaw WG (1988) Catalytic conversion of lactic acid and ammonium lactate to acrylic acid. US Patent 4,786,756.Google Scholar
  108. 108.
    Walkup PCR, Charles A, Hellen, Richard T, Eakin, David E. (1991) Production of esters of lactic acid, esters of acrylic acid, lactic acid, and acrylic acid. US Patent 5,071,754.Google Scholar
  109. 109.
    Lilga MAW, Todd A, Holladay, Johnathan E (2006) Methods of forming alpha, beta-unsaturated acids and esters. US Patent 6,992,209.Google Scholar
  110. 110.
    Ratchford WP, Fisher CH (1945) Methyl acrylate by pyrolysis of methyl acetoxypropionate—effect of pressures of 1 to 67 atmospheres. Ind Eng Chem 37:382–387CrossRefGoogle Scholar
  111. 111.
    Scholze B, Meier D (2001) Characterization of the water-insoluble fraction from pyrolysis oil (pyrolytic lignin). Part I. PY-GC/MS, FTIR, and functional groups. J Anal Applied Pyrol 60:41–54CrossRefGoogle Scholar
  112. 112.
    Mosier N, Wyman C, Dale B, Elander R, Lee YY, Holtzapple M et al (2005) Features of promising technologies for pretreatment of lignocellulosic biomass. Bioresour Technol 96:673–686PubMedCrossRefGoogle Scholar
  113. 113.
    Wyman CE, Dale BE, Elander RT, Holtzapple M, Ladisch MR, Lee YY (2005) Coordinated development of leading biomass pretreatment technologies. Bioresour Technol 96:1959–1966PubMedCrossRefGoogle Scholar
  114. 114.
    Pan XJ, Arato C, Gilkes N, Gregg D, Mabee W, Pye K et al (2005) Biorefining of softwoods using ethanol organosolv pulping: preliminary evaluation of process streams for manufacture of fuel-grade ethanol and co-products. Biotechnol Bioeng 90:473–481PubMedCrossRefGoogle Scholar
  115. 115.
    Arato C, Pye EK, Gjennestad G (2005) The lignol approach to biorefining of woody biomass to produce ethanol and chemicals. Appl Biochem Biotechnol 121:871–882PubMedCrossRefGoogle Scholar
  116. 116.
    Chang VS, Nagwani M, Holtzapple MT (1998) Lime pretreatment of crop residues bagasse and wheat straw. Appl Biochem Biotechnol 74:135–159CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC. 2011

Authors and Affiliations

  1. 1.School of Chemical Engineering and Bioengineering, Center for Bioproducts and BioenergyWashington State UniversityRichlandUSA
  2. 2.School of Forestry and Wildlife SciencesAuburn UniversityAuburnUSA
  3. 3.MP & AssociatesRichmondCanada

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