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Detailed Analysis of Wheat Straw Node and Internode for Their Prospective Efficient Utilization.

Seyed Hamidreza Ghaffar1, Mizi Fan1, Yonghui Zhou1

  • 1College of Engineering, Design and Physical Sciences, Brunel University London , Uxbridge, Middlesex UB8 3PH, United Kingdom.

Journal of Agricultural and Food Chemistry
|September 28, 2017
PubMed
Summary

Wheat straw nodes and internodes have different properties, requiring separate processing for efficient biorefining. Pretreatment reduced waxes, silica, and extractives, improving biomass utilization.

Keywords:
node and internodephysicochemical characterizationsurface chemical distributionwheat straw

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Area of Science:

  • Biomass utilization
  • Agricultural waste valorization
  • Biorefinery feedstock characterization

Background:

  • Efficient utilization of wheat straw is crucial for biorefining.
  • Understanding cell wall components, chemical structures, and morphology is necessary.
  • Differentiating node and internode characteristics can enhance processing efficiency and value.

Purpose of the Study:

  • To systematically examine wheat straw components, structures, and properties.
  • To identify variations between wheat straw nodes and internodes.
  • To evaluate the impact of hot water and mild steam pretreatment on wheat straw characteristics.

Main Methods:

  • Characterization of cell wall components (extractives, Klason lignin, ash).
  • Morphological analysis of node and internode tissues.
  • Application of hot water followed by mild steam pretreatment.
  • Quantification of waxes, silica, and extractives before and after pretreatment.

Main Results:

  • Nodes exhibited higher extractives, Klason lignin, and ash content than internodes.
  • Higher extractives and ash in nodes correlated with thicker epidermis.
  • Pretreatment significantly reduced outer surface waxes and silica.
  • Pretreatment also led to a significant decrease in extractives content in both node and internode.

Conclusions:

  • Wheat straw nodes and internodes possess distinct characteristics influencing their suitability for biorefining.
  • Pretreatment effectively removes inhibitory compounds like waxes and silica from the outer surface.
  • The study provides valuable data for optimizing wheat straw processing in biorefineries.