Co-production of 1, 2, 4-butantriol and ethanol from lignocellulose hydrolysates. (June 2019)

• Record Type: Journal Article
• Authors: Zhao, Meilin; Shi, Dingchang; Lu, Xinyao; Zong, Hong; Zhuge, Bin
• Is Part Of: Bioresource technology. Volume 282(2019)
• Page Start: 433
• Page End: 438
• Publication Date: 2019-06
• Subjects: 1, 2, 4-Butantriol -- Ethanol -- Co-production -- Sugarcane bagasse hydrolysates; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2019.03.057
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: C. glycerinogenes UG21 was used to degrade glucose and furfural in hydrolysates. Sugarcane bagasse-based BT production was realized by microbial fermentation. BT production reached 4.9 g/L. Co-production of ethanol and BT was achieved. Abstract: The aim of this work was to realize 1, 2, 4-butantriol (BT) production from sugarcane bagasse hydrolysates by microbial fermentation, and obtain co-production of BT and ethanol. Candida glycerinogenes UG21 was utilized to reduce the effect of osmolality resulting from high glucose concentration and furfural in hydrolysates on cell growth of BT-producing strains, and produced 54.1 g/L ethanol from glucose. After ethanol recovering, xylose containing stillage was obtained and used for BT production. 1.3 g/L BT was generated by a BT-producing strain. By the deletion of the crr gene and process optimization, BT titer reached 4.9 g/L. Meanwhile, the efficient utilization of sugarcane bagasse was achieved by a two-stage fermentation for co-production of BT and ethanol. This study provided a novel strategy for BT production from sugarcane bagasse, and demonstrated the potential for making full use of sugarcane bagasse hydrolysates to co-production value-added products.