Largely enhanced bioethanol production through the combined use of lignin-modified sugarcane and xylose fermenting yeast strain
- Largely enhanced bioethanol production through the combined use of lignin-modified sugarcane and xylose fermenting yeast strain
- 이선미; 엄영순; 정제형; 고자경; Fredy Altpeter; Baskaran Kannan; Ha Eun Kim; Hyoung Heon Kim; Hal S. Alper
- Issue Date
- Bioresource technology
- VOL 256-320
- 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.
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