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Related Experiment Video

Updated: Jul 14, 2026

Sequencing of Plant Wall Heteroxylans Using Enzymic, Chemical (Methylation) and Physical (Mass Spectrometry, Nuclear Magnetic Resonance) Techniques
11:49

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Published on: March 24, 2016

Xylooligosaccharides production from Arundo donax.

Sebastian Caparrós1, Gil Garrote, José Ariza

  • 1Department of Chemical Engineering, Edificio de Ciencias Experimentales, Campus del Carmen, University of Huelva, 28071, Huelva, Spain.

Journal of Agricultural and Food Chemistry
|June 15, 2007
PubMed
Summary

Autohydrolysis of Arundo donax effectively extracts valuable oligomers, yielding up to 17.7 g/100 g raw material. This process preserves cellulose while solubilizing a small fraction of lignin.

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Published on: June 20, 2010

Area of Science:

  • Biomass valorization
  • Green chemistry
  • Sustainable processing

Background:

  • Arundo donax (giant reed) is a promising lignocellulosic biomass feedstock.
  • Efficient extraction of valuable compounds from biomass is crucial for biorefineries.
  • Autohydrolysis offers an environmentally friendly method for biomass pretreatment and fractionation.

Purpose of the Study:

  • To investigate the impact of isothermal autohydrolysis parameters on Arundo donax.
  • To determine the optimal conditions for maximizing oligomer yield and characterizing their composition.
  • To evaluate the fate of cellulose and lignin during the autohydrolysis process.

Main Methods:

  • Isothermal autohydrolysis of Arundo donax samples.
  • Varied parameters: temperature (150-195°C), time (0-15 h), and liquor-to-solid ratio (8 g/g).
  • Analysis of liquid and solid phases for yield, composition, and oligomer content.

Main Results:

  • Maximum oligomer concentration achieved at dimensionless time θ=1.
  • Yields up to 17.7 g oligomers/100 g raw material, with four acetyl groups per ten xylose monomers.
  • Oligomers constitute approximately 50% of non-volatile compounds in the liquid phase.
  • Cellulose was largely retained in the solid phase (>90%).
  • Lignin solubilization was observed at 9% under optimal conditions.

Conclusions:

  • Isothermal autohydrolysis is an effective method for Arundo donax fractionation.
  • Optimized conditions yield significant amounts of valuable acetylated xylan oligomers.
  • The process selectively solubilizes lignin while preserving cellulose, enabling downstream applications.