Largely enhanced bioethanol production through the combined use of lignin-modified sugarcane and xylose fermenting yeast strain

Ja Kyong Ko, Je Hyeong Jung, Fredy Altpeter, Baskaran Kannan, Ha Eun Kim, Kyoung Heon Kim, Hal S. Alper, Youngsoon Um, Sun Mi Lee

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The recalcitrant structure of lignocellulosic biomass is a major barrier in efficient biomass-to-ethanol bioconversion processes. The combination of feedstock engineering via modification in the lignin synthesis pathway of sugarcane and co-fermentation of xylose and glucose with a recombinant xylose utilizing yeast strain produced 148% more ethanol compared to that of the wild type biomass and control strain. The lignin reduced biomass led to a substantially increased release of fermentable sugars (glucose and xylose). The engineered yeast strain efficiently co-utilized glucose and xylose for fermentation, elevating ethanol yields. In this study, it was experimentally demonstrated that the combined efforts of engineering both feedstock and microorganisms largely enhances the bioconversion of lignocellulosic feedstock to bioethanol. This strategy will significantly improve the economic feasibility of lignocellulosic biofuels production.

Original languageEnglish
Pages (from-to)312-320
Number of pages9
JournalBioresource Technology
Volume256
DOIs
Publication statusPublished - 2018 May 1

Keywords

  • Biomass recalcitrance
  • Co-fermentation
  • Lignin modification
  • Lignocellulosic bioethanol
  • Xylose utilizing strain

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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