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Ethanol production from wet-exploded wheat straw hydrolysate by thermophilic anaerobic bacterium Thermoanaerobacter BG1L1 in a continuous immobilized reactor.
Appl Biochem Biotechnol. 2008 Mar; 145(1-3):99-110.AB

Abstract

Thermophilic ethanol fermentation of wet-exploded wheat straw hydrolysate was investigated in a continuous immobilized reactor system. The experiments were carried out in a lab-scale fluidized bed reactor (FBR) at 70 degrees C. Undetoxified wheat straw hydrolysate was used (3-12% dry matter), corresponding to sugar mixtures of glucose and xylose ranging from 12 to 41 g/l. The organism, thermophilic anaerobic bacterium Thermoanaerobacter BG1L1, exhibited significant resistance to high levels of acetic acid (up to 10 g/l) and other metabolic inhibitors present in the hydrolysate. Although the hydrolysate was not detoxified, ethanol yield in a range of 0.39-0.42 g/g was obtained. Overall, sugar efficiency to ethanol was 68-76%. The reactor was operated continuously for approximately 143 days, and no contamination was seen without the use of any agent for preventing bacterial infections. The tested microorganism has considerable potential to be a novel candidate for lignocellulose bioconversion into ethanol. The work reported here also demonstrates that the use of FBR configuration might be a viable approach for thermophilic anaerobic ethanol fermentation.

Authors+Show Affiliations

BioScience and Technology Group, BioCentrum-DTU, Technical University of Denmark, Lyngby, Denmark.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18425616

Citation

Georgieva, Tania I., et al. "Ethanol Production From Wet-exploded Wheat Straw Hydrolysate By Thermophilic Anaerobic Bacterium Thermoanaerobacter BG1L1 in a Continuous Immobilized Reactor." Applied Biochemistry and Biotechnology, vol. 145, no. 1-3, 2008, pp. 99-110.
Georgieva TI, Mikkelsen MJ, Ahring BK. Ethanol production from wet-exploded wheat straw hydrolysate by thermophilic anaerobic bacterium Thermoanaerobacter BG1L1 in a continuous immobilized reactor. Appl Biochem Biotechnol. 2008;145(1-3):99-110.
Georgieva, T. I., Mikkelsen, M. J., & Ahring, B. K. (2008). Ethanol production from wet-exploded wheat straw hydrolysate by thermophilic anaerobic bacterium Thermoanaerobacter BG1L1 in a continuous immobilized reactor. Applied Biochemistry and Biotechnology, 145(1-3), 99-110. https://doi.org/10.1007/s12010-007-8014-1
Georgieva TI, Mikkelsen MJ, Ahring BK. Ethanol Production From Wet-exploded Wheat Straw Hydrolysate By Thermophilic Anaerobic Bacterium Thermoanaerobacter BG1L1 in a Continuous Immobilized Reactor. Appl Biochem Biotechnol. 2008;145(1-3):99-110. PubMed PMID: 18425616.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ethanol production from wet-exploded wheat straw hydrolysate by thermophilic anaerobic bacterium Thermoanaerobacter BG1L1 in a continuous immobilized reactor. AU - Georgieva,Tania I, AU - Mikkelsen,Marie J, AU - Ahring,Birgitte K, Y1 - 2007/09/01/ PY - 2007/05/15/received PY - 2007/07/23/accepted PY - 2008/4/22/pubmed PY - 2008/10/28/medline PY - 2008/4/22/entrez SP - 99 EP - 110 JF - Applied biochemistry and biotechnology JO - Appl Biochem Biotechnol VL - 145 IS - 1-3 N2 - Thermophilic ethanol fermentation of wet-exploded wheat straw hydrolysate was investigated in a continuous immobilized reactor system. The experiments were carried out in a lab-scale fluidized bed reactor (FBR) at 70 degrees C. Undetoxified wheat straw hydrolysate was used (3-12% dry matter), corresponding to sugar mixtures of glucose and xylose ranging from 12 to 41 g/l. The organism, thermophilic anaerobic bacterium Thermoanaerobacter BG1L1, exhibited significant resistance to high levels of acetic acid (up to 10 g/l) and other metabolic inhibitors present in the hydrolysate. Although the hydrolysate was not detoxified, ethanol yield in a range of 0.39-0.42 g/g was obtained. Overall, sugar efficiency to ethanol was 68-76%. The reactor was operated continuously for approximately 143 days, and no contamination was seen without the use of any agent for preventing bacterial infections. The tested microorganism has considerable potential to be a novel candidate for lignocellulose bioconversion into ethanol. The work reported here also demonstrates that the use of FBR configuration might be a viable approach for thermophilic anaerobic ethanol fermentation. SN - 1559-0291 UR - https://www.unboundmedicine.com/medline/citation/18425616/Ethanol_production_from_wet_exploded_wheat_straw_hydrolysate_by_thermophilic_anaerobic_bacterium_Thermoanaerobacter_BG1L1_in_a_continuous_immobilized_reactor_ DB - PRIME DP - Unbound Medicine ER -