Sunday, 6 November 2016

Formation and deposition of pseudo-lignin on liquid-hot-water-treated wood during cooling process

Published Date
Original
DOI: 10.1007/s00226-016-0872-7

Cite this article as: 
Zhuang, J., Wang, X., Xu, J. et al. Wood Sci Technol (2016). doi:10.1007/s00226-016-0872-7

Author
  • Jingshun Zhuang
  • Xiaojun Wang
  • Jiayun Xu
  • Zhaojiang Wang
  • Menghua Qin

  • Abstract

    Pseudo-lignin induced by high-severity dilute acid treatment of lignocellulose has been widely studied because of its detrimental effect on enzymatic hydrolysis. However, cooling-induced pseudo-lignin (CIPL) formed during the cooling process after treatment has always been ignored and never been characterized systematically. To investigate the formation and chemistry of CIPL, liquid hot water treatments of poplar wood were conducted. Samples of treated wood and hydrolysate were taken out from digester at various temperatures during the cooling process for characterization. SEM images evidenced a progressive deposition of CIPL on the surface of the treated wood during cooling process with a yield of 19.6 mg/g treated wood. However, the treated wood which was collected isothermally at reaction temperature showed no pseudo-lignin. Variation of organic compounds in hydrolysate from lignocellulose degradation during cooling process revealed that depolymerized lignin and furfural accounted for 80.4 and 10.6 % of CIPL, respectively, while soluble saccharides from carbohydrate hydrolysis were independent from CIPL formation. These findings stress the importance of isothermal separation of treated wood and hydrolysate. Otherwise, CIPL should hinder enzymatic hydrolysis for biofuels production or delignification for cellulosic fiber production.

    References

    1. Amidon TE, Liu S (2009) Water-based woody biorefinery. Biotechnol Adv 27:542–550CrossRefPubMedGoogle Scholar
    2. Bardet M, Robert DR, Lundquist K (1985) On the reactions and degradation of the lignin during steam hydrolysis of aspen wood. Sven Papperstidn 88:61–67Google Scholar
    3. Borrega M, Niemelä K, Sixta H (2013) Effect of hydrothermal treatment intensity on the formation of degradation products from birchwood. Holzforschung 67:871–879CrossRefGoogle Scholar
    4. Bujanovic BM, Goundalkar MJ, Amidon TE (2012) Increasing the value of a biorefinery based on hot-water extraction: lignin products. Tappi J 11:19–26Google Scholar
    5. Crocker D (2008) Determination of structural carbohydrates and lignin in biomass. National Renewable Energy Laboratory, GoldenGoogle Scholar
    6. Fang W, Sixta H (2015) Advanced biorefinery based on the fractionation of biomass in γ-valerolactone and water. ChemSusChem 8:73–76CrossRefPubMedGoogle Scholar
    7. FitzPatrick M, Champagne P, Cunningham MF, Whitney RA (2010) A biorefinery processing perspective: treatment of lignocellulosic materials for the production of value-added products. Bioresour Technol 101:8915–8922CrossRefPubMedGoogle Scholar
    8. Hu F, Ragauskas A (2014) Suppression of pseudo-lignin formation under dilute acid pretreatment conditions. RSC Adv 4:4317–4323CrossRefGoogle Scholar
    9. Hu F, Jung S, Ragauskas A (2012) Pseudo-lignin formation and its impact on enzymatic hydrolysis. Bioresour Technol 117:7–12CrossRefPubMedGoogle Scholar
    10. Leschinsky M, Weber HK, Patt R, Sixta H (2009) Formation of insoluble components during autohydrolysis of Eucalyptus globulus. Lenzinger Berichte 87:16–25Google Scholar
    11. Li J, Henriksson G, Gellerstedt G (2005) Carbohydrate reactions during high-temperature steam treatment of aspen wood. Appl Biochem Biotechnol 125:175–188CrossRefPubMedGoogle Scholar
    12. Li J, Henriksson G, Gellerstedt G (2007) Lignin depolymerization/repolymerization and its critical role for delignification of aspen wood by steam explosion. Bioresour Technol 98:3061–3068CrossRefPubMedGoogle Scholar
    13. Ma X, Yang X, Zheng X, Chen L, Huang L, Cao S, Akinosho H (2015) Toward a further understanding of hydrothermally pretreated holocellulose and isolated pseudo lignin. Cellulose 22:1687–1696CrossRefGoogle Scholar
    14. Miller R, Olsson K, Pernemalm P (1984) Formation of aromatic compounds from carbohydrates. IX. Reaction of d-glucose and l-lysine in slightly acidic, aqueous solution. ACTA Chem Scand B 38:689–694CrossRefGoogle Scholar
    15. Popoff T, Theander O (1972) Formation of Aromatic Compounds from Carbohydrates: part 1. Reaction of d-glucuronic Acid, d-glacturonic Acid, d-xylose, and l-arabinose in slightly acidic, aqueous solution. Carbohydr Res 22:135–149CrossRefGoogle Scholar
    16. Popoff T, Theander O (1976) Formation of aromatic-compounds from carbohydrates. 3. Reaction of d-glucose and d-fructose in slightly acidic, aqueous-solution. ACTA Chem Scand B 30:397–402CrossRefGoogle Scholar
    17. Sannigrahi P, Kim DH, Jung S, Ragauskas A (2011) Pseudo-lignin and pretreatment chemistry. Energy Environ Sci 4:1306–1310CrossRefGoogle Scholar
    18. Schütt F, Puls J, Saake B (2011) Optimization of steam pretreatment conditions for enzymatic hydrolysis of poplar wood. Holzforschung 65:453–459CrossRefGoogle Scholar
    19. Selig MJ, Viamajala S, Decker SR, Tucker MP, Himmel ME, Vinzant TB (2007) Deposition of lignin droplets produced during dilute acid pretreatment of maize stems retards enzymatic hydrolysis of cellulose. Biotechnol Progr 23:1333–1339CrossRefGoogle Scholar
    20. Sluiter A, Hames B, Ruiz R, Scarlata C, Sluiter J, Templeton D (2006) Determination of sugars, byproducts, and degradation products in liquid fraction process samples. National Renewable Energy Laboratory, GoldenGoogle Scholar
    21. Sluiter A, Hames B, Hyman D, Payne C, Ruiz R, Scarlata C, Sluiter J, Templeton D, Wolfe J (2008) Determination of total solids in biomass and total dissolved solids in liquid process samples. National Renewable Energy Laboratory, GoldenGoogle Scholar
    22. Testova L, Chong S-L, Tenkanen M, Sixta H (2011) Autohydrolysis of birch wood. Holzforschung 65:535–542CrossRefGoogle Scholar
    23. Vena PF, Brienzo M, del Prado García-Aparicio M, Görgens JF, Rypstra T (2013) Hemicelluloses extraction from giant bamboo (Bambusa balcooa Roxburgh) prior to kraft or soda-AQ pulping and its effect on pulp physical properties. Holzforschung 67:863–870CrossRefGoogle Scholar
    24. Wang Z, Wang X, Jiang J, Fu Y, Qin M (2015) Fractionation and characterization of saccharides and lignin components in wood prehydrolysis liquor from dissolving pulp production. Carbohydr Polym 126:185–191CrossRefPubMedGoogle Scholar
    25. Yu Q, Zhuang X, Yuan Z, Wang Q, Qi W, Wang W, Zhang Y, Xu J, Xu H (2010) Two-step liquid hot water pretreatment of Eucalyptus grandis to enhance sugar recovery and enzymatic digestibility of cellulose. Bioresour Technol 101:4895–4899CrossRefPubMedGoogle Scholar
    26. Zeitsch KJ (2000) The chemistry and technology of furfural and its many by-products. Elsevier, AmsterdamGoogle Scholar

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