Electron beam irradiation enhances the digestibility and fermentation yield of water-soaked lignocellulosic biomass
In order to overcome the limitation of commercial electron beam irradiation (EBI), lignocellulosic rice straw (RS) was pretreated using water soaking-based electron beam irradiation (WEBI). This environment-friendly pretreatment, without the formation (or release) of inhibitory compounds (especially...
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doaj-506ac705212b477c99bfe6471badce282020-11-24T21:23:06ZengElsevierBiotechnology Reports2215-017X2014-12-014C303310.1016/j.btre.2014.07.006Electron beam irradiation enhances the digestibility and fermentation yield of water-soaked lignocellulosic biomassJin Seop BakIn order to overcome the limitation of commercial electron beam irradiation (EBI), lignocellulosic rice straw (RS) was pretreated using water soaking-based electron beam irradiation (WEBI). This environment-friendly pretreatment, without the formation (or release) of inhibitory compounds (especially hydroxymethylfurfural and furfural), significantly increased the enzymatic hydrolysis and fermentation yields of RS. Specifically, when water-soaked RS (solid:liquid ratio of 100%) was treated with WEBI doses of 1 MeV at 80 kGy, 0.12 mA, the glucose yield after 120 h of hydrolysis was 70.4% of the theoretical maximum. This value was predominantly higher than the 29.5% and 52.1% measured from untreated and EBI-treated RS, respectively. Furthermore, after simultaneous saccharification and fermentation for 48 h, the ethanol concentration, production yield, and productivity were 9.3 g/L, 57.0% of the theoretical maximum, and 0.19 g/L h, respectively. Finally, scanning electron microscopy images revealed that WEBI induced significant ultrastructural changes to the surface of lignocellulosic fibers.http://www.sciencedirect.com/science/article/pii/S2215017X14000290BioethanolBiomass pretreatmentWater soaking-based electron beam irradiation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Jin Seop Bak |
spellingShingle |
Jin Seop Bak Electron beam irradiation enhances the digestibility and fermentation yield of water-soaked lignocellulosic biomass Biotechnology Reports Bioethanol Biomass pretreatment Water soaking-based electron beam irradiation |
author_facet |
Jin Seop Bak |
author_sort |
Jin Seop Bak |
title |
Electron beam irradiation enhances the digestibility and fermentation yield of water-soaked lignocellulosic biomass |
title_short |
Electron beam irradiation enhances the digestibility and fermentation yield of water-soaked lignocellulosic biomass |
title_full |
Electron beam irradiation enhances the digestibility and fermentation yield of water-soaked lignocellulosic biomass |
title_fullStr |
Electron beam irradiation enhances the digestibility and fermentation yield of water-soaked lignocellulosic biomass |
title_full_unstemmed |
Electron beam irradiation enhances the digestibility and fermentation yield of water-soaked lignocellulosic biomass |
title_sort |
electron beam irradiation enhances the digestibility and fermentation yield of water-soaked lignocellulosic biomass |
publisher |
Elsevier |
series |
Biotechnology Reports |
issn |
2215-017X |
publishDate |
2014-12-01 |
description |
In order to overcome the limitation of commercial electron beam irradiation (EBI), lignocellulosic rice straw (RS) was pretreated using water soaking-based electron beam irradiation (WEBI). This environment-friendly pretreatment, without the formation (or release) of inhibitory compounds (especially hydroxymethylfurfural and furfural), significantly increased the enzymatic hydrolysis and fermentation yields of RS. Specifically, when water-soaked RS (solid:liquid ratio of 100%) was treated with WEBI doses of 1 MeV at 80 kGy, 0.12 mA, the glucose yield after 120 h of hydrolysis was 70.4% of the theoretical maximum. This value was predominantly higher than the 29.5% and 52.1% measured from untreated and EBI-treated RS, respectively. Furthermore, after simultaneous saccharification and fermentation for 48 h, the ethanol concentration, production yield, and productivity were 9.3 g/L, 57.0% of the theoretical maximum, and 0.19 g/L h, respectively. Finally, scanning electron microscopy images revealed that WEBI induced significant ultrastructural changes to the surface of lignocellulosic fibers. |
topic |
Bioethanol Biomass pretreatment Water soaking-based electron beam irradiation |
url |
http://www.sciencedirect.com/science/article/pii/S2215017X14000290 |
work_keys_str_mv |
AT jinseopbak electronbeamirradiationenhancesthedigestibilityandfermentationyieldofwatersoakedlignocellulosicbiomass |
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