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Whole sugar 2,3-butanediol fermentation for oil palm empty fruit bunches biorefinery by a newly isolated Klebsiella pneumoniae PM2
- Source :
- Bioresource technology. 333
- Publication Year :
- 2021
-
Abstract
- Effective utilization of cellulose and hemicelluloses is essential to sustainable bioconversion of lignocellulose. A newly isolated xylose-utilizing strain, Klebsiella pneumoniae PM2, was introduced to convert the biomass “whole sugars” into high value 2,3-butanediol (2,3-BDO) in a biorefinery process. The fermentation conditions were optimized (30°C, pH 7, and 150 rpm agitation) using glucose for maximum 2,3-BDO production in batch systems. A sulfite pretreated oil palm empty fruit bunches (EFB) whole slurry (substrate hydrolysate 119.5 g/L total glucose mixed with pretreatment spent liquor 80 g/L xylose) was fed to strain PM2 for fermentation. The optimized biorefinery process resulted in 75.03 ± 3.17 g/L of 2,3-BDO with 0.78 ± 0.33 g/L/h productivity and 0.43 g/g yield (87% of theoretical value) via a modified staged separate hydrolysis and fermentation process. This result is equivalent to approximately 135 kg 2,3-BDO and 14.5 kg acetoin precursors from 1 ton of EFB biomass without any wastage of both C6 and C5 sugars.
- Subjects :
- 0106 biological sciences
Environmental Engineering
Bioconversion
Bioengineering
010501 environmental sciences
Xylose
Palm Oil
01 natural sciences
Hydrolysate
chemistry.chemical_compound
010608 biotechnology
2,3-Butanediol
Food science
Sugar
Butylene Glycols
Waste Management and Disposal
0105 earth and related environmental sciences
Ethanol
Renewable Energy, Sustainability and the Environment
Chemistry
Acetoin
General Medicine
Biorefinery
Klebsiella pneumoniae
Fruit
Fermentation
Sugars
Subjects
Details
- ISSN :
- 18732976
- Volume :
- 333
- Database :
- OpenAIRE
- Journal :
- Bioresource technology
- Accession number :
- edsair.doi.dedup.....c8ed52a3f0ee60c716de687dc5335f10