Journal article
Modulation of lignin deposition/composition via phytic acid reduction in seed improves the quality of barley straw for sugar release and ethanol production
Biomass & bioenergy, Vol.46, pp.584-592
11/2012
Handle:
https://hdl.handle.net/2376/111363
Abstract
Biomass-based fuels provide a promising route to avoid environmental issues and the global political instability that arise from depending on petroleum. Currently, biomass conversion remains costly primarily because of the intrinsic recalcitrance of biomass. Improved manipulation of lignin can be a promising path to solving this problem. Through evaluation via fiber analysis, enzymatic hydrolysis, ethanol fermentation, thermogravimetric analysis, and pyrolysis-gas chromatography/mass spectrometry, we show here that the modulation of lignin deposition/composition of barley straw produced phenotypically normal plants that reduced thermo-chemical, enzymatic, and microbial recalcitrance. This study reveal mutation of barley for low phytic acid content in the grain decreases lignin content modestly, preferentially decreases the guaiacyl (G) lignin conterpart, moreover, enhances the ethanol yield by up to 21.1% using conventional biomass fermentation processes after diluted acid pretreatment. Therefore, this apparent reduction in the recalcitrance of mutant has the potential to significantly lower the processing costs for biomass-derived fuels and chemicals, and be valuable for developing improved cultivars of biofuel crops.
► Applied fiber analysis, enzymatic hydrolysis, SSF, TG/DTG analysis, Py-GC/MS. ► Lignin modulation reduced thermo-chemical, enzymatic, and microbial recalcitrance. ► Low phytic acid content in the grain decreases lignin content modestly. ► Increased syringyl:guaiacyl lignin monomer ratio. ► Enhanced ethanol yield by conventional fermentation after dilute acid pretreatment.
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Details
- Title
- Modulation of lignin deposition/composition via phytic acid reduction in seed improves the quality of barley straw for sugar release and ethanol production
- Creators
- Jing Ke - Department of Biological Systems Engineering, Washington State University, PO Box 646120, Pullman, WA 99164-6120, USADhrubojyoti D Laskar - Department of Biological Systems Engineering, Washington State University, PO Box 646120, Pullman, WA 99164-6120, USAMackenzie T Ellison - Plant, Soil, & Entomological Sciences, University of Idaho, Moscow, ID 83844, USARobert S Zemetra - Plant, Soil, & Entomological Sciences, University of Idaho, Moscow, ID 83844, USAShulin Chen - Department of Biological Systems Engineering, Washington State University, PO Box 646120, Pullman, WA 99164-6120, USA
- Publication Details
- Biomass & bioenergy, Vol.46, pp.584-592
- Publisher
- Elsevier Ltd
- Identifiers
- 99900583052601842
- Language
- English
- Resource Type
- Journal article