Impact of cationic polyelectrolyte on the nanoshear hybrid alkaline pretreatment of corn stover: Morphology and saccharification study

Shaowen Ji, Ilsoon Lee

Research output: Contribution to journalArticle

  • 5 Citations

Abstract

Cationic polyelectrolyte was first used as the additive in the nanoshear hybrid alkaline pretreatment of corn stover. The novel nanoshear hybrid pretreatment process was recently developed at MSU. The chemical compositions and morphologies were investigated by SEM, TEM, confocal CLSM, and XPS to elucidate the degradation mechanism of cellular structures. At room temperature and fast processing conditions (∼2. min), lignin was found to redistribute on the inner and outer surfaces of the cell wall as lignin aggregate droplets instead of being extracted. Free microfibrils in the residues were also observed. The yields of enzymatic hydrolysis were enhanced for the pretreated corn stover with the aid of polyelectrolyte as an additive. We speculate that lignin was effectively modified which opened up the cell wall structure during the short pretreatment process and prevented non-productive binding of enzymes in the enzyme hydrolysis reaction.

LanguageEnglish (US)
Pages45-50
Number of pages6
JournalBioresource Technology
Volume133
DOIs
StatePublished - Apr 2013

Profile

Saccharification
Lignin
Polyelectrolytes
lignin
maize
hydrolysis
Enzymes
Cells
enzyme
Enzymatic hydrolysis
X-ray spectroscopy
droplet
transmission electron microscopy
Hydrolysis
X ray photoelectron spectroscopy
chemical composition
scanning electron microscopy
Transmission electron microscopy
Degradation
degradation

Keywords

  • Additives
  • Biomass pretreatment
  • Enzymatic hydrolysis
  • Lignin redistribution
  • Polyelectrolyte

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

Cite this

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