Home Physical Sciences Behavior of xylans from Eucalyptus species. Part 1. The influence of structural features of eucalyptus xylans on their retention in kraft pulp
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Behavior of xylans from Eucalyptus species. Part 1. The influence of structural features of eucalyptus xylans on their retention in kraft pulp

  • Andréia S. Magaton , Teresa Cristina F. Silva EMAIL logo , Jorge Luiz Colodette , Dorila Piló-Veloso and Flaviana Reis Milagres
Published/Copyright: September 4, 2012
Holzforschung
From the journal Holzforschung Volume 67 Issue 2

Abstract

4-O-methylglucuronoxylans were isolated from the wood and pulp of different Eucalyptus species (E. dunni, E. grandis, E. nitens, E. urograndis and E. urophylla) and characterized by 1H NMR spectroscopy and size-exclusion chromatography (SEC). The content of 4-O-methylglucuronic acid (MeGlcA) varied between the eucalyptus species from 1.90 to 2.80 expressed as MeGlcA/10 xyloses, whereas in the pulp, the total uronic acid content was approximately 1.02, from which the half was hexenuronic acid (HexA). From the MeGlcA linked to the xylan chain 9–26% are substituted in position O-2 by hexose units. The Mw of the xylans extracted from wood ranged between 26.1 and 28.4 kDa. The retention of 4-O-methylglucuronoxylans (51.3–58.7%) during kraft pulping was high, and the retention is related to the content of MeGlcA group, the content of MeGlcA group substituted at O-2, and the average molecular weight of the xylans. The parameters observed affect the overall pulp yield and pulp properties.

Keywords: eucalyptus; NMR; SEC; uronic acids; xylans retention
Corresponding author: Teresa Cristina F. Silva, Departamento de Engenharia Florestal, Laboratório de Celulose e Papel, Universidade Federal de Viçosa, Viçosa, MG 36570-000, Brazil, Phone: +55 31 3899 2088
Received: 2012-2-27
Accepted: 2012-8-8
Published Online: 2012-09-04
Published in Print: 2013-02-01

©2013 by Walter de Gruyter Berlin Boston

Articles in the same Issue

  1. Masthead
  2. Masthead
  3. Original Articles
  4. Behavior of xylans from Eucalyptus species. Part 1. The influence of structural features of eucalyptus xylans on their retention in kraft pulp
  5. Behavior of xylans from the Eucalyptus species. Part 2. Characterization of 4-O-methylglucuronoxylans isolated from black liquors of kraft pulping of Eucalyptus grandis and E. urophylla
  6. Convenient preparation of a β-O-4-type lignin model trimer via KOH-catalyzed hydroxymethylation and a new protection method
  7. Topochemistry of heat-treated and N-methylol melamine-modified wood of koto (Pterygota macrocarpa K. Schum.) and limba (Terminalia superba Engl. et. Diels)
  8. Enzymatic bleaching of eucalyptus kraft pulp: effects on the prebleaching filtrate, pulp quality and paper properties
  9. Compressive-torsion DMA of yellow-poplar wood in organic media
  10. Physiomechanical properties of ultra-lightweight foam core particleboard: different core densities
  11. Fractal dimension analysis of void size in wood-strand composites based on X-ray computer tomography images
  12. Sorption isotherms of thermally modified wood
  13. Hot water extracted wood fiber for production of wood plastic composites (WPCs)
  14. Generic failure mechanisms in adhesive bonds
  15. Climate response of cell characteristics in tree rings of Picea crassifolia
  16. Performance of wood treated with prospective organic surface protectants upon outdoor exposure: FTIR spectroscopic analysis of weathered surfaces
  17. Short Notes
  18. Studying thermal conductivity of wood at cell wall level by scanning thermal microscopy (SThM)
  19. Beech wood shrinkage observed at the micro-scale by a time series of X-ray computed tomographs (μXCT)
  20. Meetings
  21. Meetings
https://doi.org/10.1515/hf-2012-0034
Keywords for this article
eucalyptus; NMR; SEC; uronic acids; xylans retention

Articles in the same Issue

  1. Masthead
  2. Masthead
  3. Original Articles
  4. Behavior of xylans from Eucalyptus species. Part 1. The influence of structural features of eucalyptus xylans on their retention in kraft pulp
  5. Behavior of xylans from the Eucalyptus species. Part 2. Characterization of 4-O-methylglucuronoxylans isolated from black liquors of kraft pulping of Eucalyptus grandis and E. urophylla
  6. Convenient preparation of a β-O-4-type lignin model trimer via KOH-catalyzed hydroxymethylation and a new protection method
  7. Topochemistry of heat-treated and N-methylol melamine-modified wood of koto (Pterygota macrocarpa K. Schum.) and limba (Terminalia superba Engl. et. Diels)
  8. Enzymatic bleaching of eucalyptus kraft pulp: effects on the prebleaching filtrate, pulp quality and paper properties
  9. Compressive-torsion DMA of yellow-poplar wood in organic media
  10. Physiomechanical properties of ultra-lightweight foam core particleboard: different core densities
  11. Fractal dimension analysis of void size in wood-strand composites based on X-ray computer tomography images
  12. Sorption isotherms of thermally modified wood
  13. Hot water extracted wood fiber for production of wood plastic composites (WPCs)
  14. Generic failure mechanisms in adhesive bonds
  15. Climate response of cell characteristics in tree rings of Picea crassifolia
  16. Performance of wood treated with prospective organic surface protectants upon outdoor exposure: FTIR spectroscopic analysis of weathered surfaces
  17. Short Notes
  18. Studying thermal conductivity of wood at cell wall level by scanning thermal microscopy (SThM)
  19. Beech wood shrinkage observed at the micro-scale by a time series of X-ray computed tomographs (μXCT)
  20. Meetings
  21. Meetings
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