Improving ethanol yields with deacetylated and two-stage pretreated corn stover and sugarcane bagasse by blending commercial xylose-fermenting and wild type Saccharomyces yeast

Wang, Zhaoqin; Dien, Bruce S.; Rausch, Kent D.; Tumbleson, M. E.; Singh, Vijay

doi:10.1016/j.biortech.2019.02.123

Improving ethanol yields with deacetylated and two-stage pretreated corn stover and sugarcane bagasse by blending commercial xylose-fermenting and wild type Saccharomyces yeast

Journal Article · Fri Mar 01 00:00:00 EST 2019 · Bioresource Technology

DOI:https://doi.org/10.1016/j.biortech.2019.02.123· OSTI ID:1498057

Wang, Zhaoqin ^[1]; Dien, Bruce S. ^[2]; Rausch, Kent D. ^[3]; Tumbleson, M. E. ^[3]; Singh, Vijay ^[3]

Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States); CABBI
National Center for Agricultural Utilization Research, USDA, Peoria, IL (United States)
Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)

Corn stover and sugarcane bagasse are the most widely available agriculture processing biomass and could serve as feedstocks for production of biofuel. In this study, three different technologies are combined to develop a more efficient conversion process for each of these feedstocks. The three technologies are diluted alkaline deacetylation process, combined thermochemical and mechanical shear pretreatment, and fermentation using a combined inoculum of two commercial Saccharomyces yeast strains. The two yeast strains used were a non-GMO and GMO strain engineered for xylose fermentation. The final ethanol concentrations obtained were 35.7 g/L from deacetylated corn stover and 32.9 g/L from sugarcane bagasse. Blending the two yeast reduced residual xylose content from 1.24 g/L to 0.48g/L and increased ethanol production by 6.5% compared to solely using the C5/C6 yeast. In conclusion, the optimized yeast blend also lowered the amount of C5/C6 yeast required for inoculation by 80%.

View Accepted Manuscript (DOE)

Research Organization:: Center for Advanced Bioenergy and Bioproducts Innovation (CABBI), Urbana, IL (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)

Grant/Contract Number:: SC0018420

OSTI ID:: 1498057

Alternate ID(s):: OSTI ID: 1547670

Journal Information:: Bioresource Technology, Journal Name: Bioresource Technology Journal Issue: C Vol. 282; ISSN 0960-8524

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Lignocellulosic biomass from agro‐industrial residues in South America: current developments and perspectives Magalhães, Antonio Irineudo; Carvalho, Júlio Cesar; Melo Pereira, Gilberto Vinícius Biofuels, Bioproducts and Biorefining, Vol. 13, Issue 6 https://doi.org/10.1002/bbb.2048	journal	August 2019
Economic Analysis of Cellulosic Ethanol Production from Sugarcane Bagasse Using a Sequential Deacetylation, Hot Water and Disk-Refining Pretreatment Cheng, Ming-Hsun; Wang, Zhaoqin; Dien, Bruce S. Processes, Vol. 7, Issue 10, p. 642 https://doi.org/10.3390/pr7100642	journal	September 2019

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Improving ethanol yields with deacetylated and two-stage pretreated corn stover and sugarcane bagasse by blending commercial xylose-fermenting and wild type Saccharomyces yeast

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