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Volume 8
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10.3390/fermentation8070340
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Article

Sugarcane Bagasse-Based Ethanol Production and Utilization of Its Vinasse for Xylitol Production as an Approach in Integrated Biorefinery

by
Sreyden Hor
1,2,
Mallika Boonmee Kongkeitkajorn
2,3,* and
Alissara Reungsang
2,4
1
Graduate School, Khon Kaen University, Khon Kaen 40002, Thailand
2
Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand
3
Research Center for Environmental and Hazardous Substance Management (EHSM), Khon Kaen University, Khon Kaen 40002, Thailand
4
Academy of Science, Royal Society of Thailand, Bangkok 10300, Thailand
*
Author to whom correspondence should be addressed.
Fermentation 2022, 8(7), 340; https://doi.org/10.3390/fermentation8070340
Submission received: 22 June 2022 / Revised: 12 July 2022 / Accepted: 17 July 2022 / Published: 19 July 2022
(This article belongs to the Special Issue Yeast, Biofuels, and Value-Added Products)
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Abstract

Biorefinery of sugarcane bagasse into ethanol and xylitol was investigated in this study. Ethanol fermentation of sugarcane bagasse hydrolysate was carried out by Saccharomyces cerevisiae. After ethanol distillation, the vinasse containing xylose was used to produce xylitol through fermentation by Candida guilliermondii TISTR 5068. During the ethanol fermentation, it was not necessary to supplement a nitrogen source to the hydrolysate. Approximately 50 g/L of bioethanol was produced after 36 h of fermentation. The vinasse was successfully used to produce xylitol. Supplementing the vinasse with 1 g/L of yeast extract improved xylitol production 1.4-fold. Cultivating the yeast with 10% controlled dissolved oxygen resulted in the best xylitol production and yields of 10.2 ± 1.12 g/L and 0.74 ± 0.04 g/g after 60 h fermentation. Supplementing the vinasse with low fraction of molasses to improve xylitol production did not yield a positive result. The supplementation caused decreases of up to 34% in xylitol production rate, 24% in concentration, and 24% in yield.
Keywords: yeast; xylitol; bioethanol; sugarcane bagasse; vinasse; biorefinery; value-added products; biofuels yeast; xylitol; bioethanol; sugarcane bagasse; vinasse; biorefinery; value-added products; biofuels

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MDPI and ACS Style

Hor, S.; Kongkeitkajorn, M.B.; Reungsang, A. Sugarcane Bagasse-Based Ethanol Production and Utilization of Its Vinasse for Xylitol Production as an Approach in Integrated Biorefinery. Fermentation 2022, 8, 340. https://doi.org/10.3390/fermentation8070340

AMA Style

Hor S, Kongkeitkajorn MB, Reungsang A. Sugarcane Bagasse-Based Ethanol Production and Utilization of Its Vinasse for Xylitol Production as an Approach in Integrated Biorefinery. Fermentation. 2022; 8(7):340. https://doi.org/10.3390/fermentation8070340

Chicago/Turabian Style

Hor, Sreyden, Mallika Boonmee Kongkeitkajorn, and Alissara Reungsang. 2022. "Sugarcane Bagasse-Based Ethanol Production and Utilization of Its Vinasse for Xylitol Production as an Approach in Integrated Biorefinery" Fermentation 8, no. 7: 340. https://doi.org/10.3390/fermentation8070340

APA Style

Hor, S., Kongkeitkajorn, M. B., & Reungsang, A. (2022). Sugarcane Bagasse-Based Ethanol Production and Utilization of Its Vinasse for Xylitol Production as an Approach in Integrated Biorefinery. Fermentation, 8(7), 340. https://doi.org/10.3390/fermentation8070340

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