Catalysis with CuII(bpy) improves alkaline hydrogen peroxide pretreatment

Zhenglun Li, Charles H. Chen, Tongjun Liu, Vaidyanathan Mathrubootham, Eric L. Hegg, David B. Hodge

Research output: Contribution to journalArticle

  • 13 Citations

Abstract

Copper(II) 2,2′-bipyridine (CuII(bpy))-catalyzed alkaline hydrogen peroxide (AHP) pretreatment was performed on three biomass feedstocks including alkali pre-extracted switchgrass, silver birch, and a hybrid poplar cultivar. This catalytic approach was found to improve the subsequent enzymatic hydrolysis of plant cell wall polysaccharides to monosaccharides for all biomass types at alkaline pH relative to uncatalyzed pretreatment. The hybrid poplar exhibited the most significant improvement in enzymatic hydrolysis with monomeric sugar release and conversions more than doubling from 30% to 61% glucan conversion, while lignin solubilization was increased from 36.6% to 50.2% and hemicellulose solubilization was increased from 14.9% to 32.7%. It was found that CuII(bpy)-catalyzed AHP pretreatment of cellulose resulted in significantly more depolymerization than uncatalyzed AHP pretreatment (78.4% vs. 49.4% decrease in estimated degree of polymerization) and that carboxyl content the cellulose was significantly increased as well (fivefold increase vs. twofold increase). Together, these results indicate that CuII(bpy)-catalyzed AHP pretreatment represents a promising route to biomass deconstruction for bioenergy applications. Biotechnol. Bioeng. 2013; 110: 1078-1086.

LanguageEnglish (US)
Pages1078-1086
Number of pages9
JournalBiotechnology and Bioengineering
Volume110
Issue number4
DOIs
StatePublished - Apr 2013

Profile

Catalysis
Hydrogen peroxide
Hydrogen Peroxide
Biomass
Enzymatic hydrolysis
Cellulose
Hydrolysis
Panicum
Betula
2,2'-Dipyridyl
Depolymerization
Glucans
Monosaccharides
Lignin
Plant Cells
Alkalies
Polysaccharides
Silver
Sugars
Polymerization

Keywords

  • Bioenergy
  • Cellulosic biofuels
  • Chemical pretreatment
  • Cu(bpy)
  • Lignin

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

Cite this

Li, Z., Chen, C. H., Liu, T., Mathrubootham, V., Hegg, E. L., & Hodge, D. B. (2013). Catalysis with CuII(bpy) improves alkaline hydrogen peroxide pretreatment. Biotechnology and Bioengineering, 110(4), 1078-1086. DOI: 10.1002/bit.24793

Catalysis with CuII(bpy) improves alkaline hydrogen peroxide pretreatment. / Li, Zhenglun; Chen, Charles H.; Liu, Tongjun; Mathrubootham, Vaidyanathan; Hegg, Eric L.; Hodge, David B.

In: Biotechnology and Bioengineering, Vol. 110, No. 4, 04.2013, p. 1078-1086.

Research output: Contribution to journalArticle

Li, Z, Chen, CH, Liu, T, Mathrubootham, V, Hegg, EL & Hodge, DB 2013, 'Catalysis with CuII(bpy) improves alkaline hydrogen peroxide pretreatment' Biotechnology and Bioengineering, vol. 110, no. 4, pp. 1078-1086. DOI: 10.1002/bit.24793
Li Z, Chen CH, Liu T, Mathrubootham V, Hegg EL, Hodge DB. Catalysis with CuII(bpy) improves alkaline hydrogen peroxide pretreatment. Biotechnology and Bioengineering. 2013 Apr;110(4):1078-1086. Available from, DOI: 10.1002/bit.24793
Li, Zhenglun ; Chen, Charles H. ; Liu, Tongjun ; Mathrubootham, Vaidyanathan ; Hegg, Eric L. ; Hodge, David B./ Catalysis with CuII(bpy) improves alkaline hydrogen peroxide pretreatment. In: Biotechnology and Bioengineering. 2013 ; Vol. 110, No. 4. pp. 1078-1086
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