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Lignocellulosic fibres surface interactions in enzymatic reaction using data-mining.

Sophie Morin1, Brieuc Lecart1, Mylène Lang1

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This study reveals how lignocellulosic fiber surface chemistry influences reaction products during modification. Data mining identified key correlations between fiber composition and specific reaction outcomes at different temperatures.

Keywords:
Laccaseferulic acidlignocellulosic fibres

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Surface Chemistry

Background:

  • Traditional lignocellulosic fiber modification prioritizes material properties over understanding reaction parameters.
  • The chemical interface interactions governing these modifications remain largely unexplored.

Purpose of the Study:

  • To investigate the influence of lignocellulosic fiber surface chemical composition on reaction products during enzymatic modification.
  • To identify specific reaction parameters and fiber components that correlate with product formation.

Main Methods:

  • Enzymatic modification of lignocellulosic fibers (flax, hemp, cellulose) with trans-ferulic acid and laccase at controlled temperatures (25°C, 60°C) and pH (5).
  • Analysis of reaction filtrate and extractives for dimers and trimers.
  • Application of a data-mining algorithm to correlate fiber surface composition with detected reaction products.

Main Results:

  • Variable concentrations of dimers and trimers were detected in reaction products.
  • At 25°C, crystalline cellulose, amorphous cellulose, xylans, mannans, and lignins correlated with specific products.
  • At 60°C, only lignins and xylan showed correlation with reaction products, indicating temperature-dependent interactions.

Conclusions:

  • Lignocellulosic fiber surface composition significantly impacts the extractive profile and reaction product formation.
  • A data-mining approach effectively unveiled non-evident chemical interface interactions in enzymatic modification reactions.
  • Understanding these interactions allows for targeted modification of lignocellulosic fibers for desired functionalities.