Improved enzymatic hydrolysis yield of rice straw using electron beam irradiation pretreatment

Jin Seop Bak; Ja Kyong Ko; Young Hwan Han; Byung Cheol Lee; In Geol Choi; Kyoung Heon Kim

doi:10.1016/j.biortech.2008.09.010

Improved enzymatic hydrolysis yield of rice straw using electron beam irradiation pretreatment

Jin Seop Bak, Ja Kyong Ko, Young Hwan Han, Byung Cheol Lee, In Geol Choi, Kyoung Heon Kim

Research output: Contribution to journal › Article › peer-review

209 Citations (Scopus)

Abstract

Rice straw was irradiated using an electron beam at currents and then hydrolyzed with cellulase and β-glucosidase to produce glucose. The pretreatment by electron beam irradiation (EBI) was found to significantly increase the enzyme digestibility of rice straw. Specifically, when rice straw that was pretreated by EBI at 80 kGy at 0.12 mA and 1 MeV was hydrolyzed with 60 FPU of cellulase and 30 CBU of β-glucosidase, the glucose yield after 132 h of hydrolysis was 52.1% of theoretical maximum. This value was significantly higher than the 22.6% that was obtained when untreated rice straw was used. In addition, SEM analysis of pretreated rice straw revealed that EBI caused apparent damage to the surface of the rice straw. Furthermore, EBI pretreatment was found to increase the crystalline portion of the rice straw. Finally, the crystallinity and enzyme digestibility were found to be strongly correlated between rice straw samples that were pretreated by EBI under different conditions.

Original language	English
Pages (from-to)	1285-1290
Number of pages	6
Journal	Bioresource technology
Volume	100
Issue number	3
DOIs	https://doi.org/10.1016/j.biortech.2008.09.010
Publication status	Published - 2009 Feb

Bibliographical note

Funding Information:
This work was supported by the National Nuclear R&D Program (Grant No. M2 08B020028010) of MEST/KOSEF and by a Grant (20070301-034-013) from BioGreen 21 Program, Rural Development Administration, Republic of Korea.

Keywords

Biofuel
Biomass
Electron beam irradiation
Lignocellulose
Pretreatment

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2008.09.010

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title = "Improved enzymatic hydrolysis yield of rice straw using electron beam irradiation pretreatment",

abstract = "Rice straw was irradiated using an electron beam at currents and then hydrolyzed with cellulase and β-glucosidase to produce glucose. The pretreatment by electron beam irradiation (EBI) was found to significantly increase the enzyme digestibility of rice straw. Specifically, when rice straw that was pretreated by EBI at 80 kGy at 0.12 mA and 1 MeV was hydrolyzed with 60 FPU of cellulase and 30 CBU of β-glucosidase, the glucose yield after 132 h of hydrolysis was 52.1% of theoretical maximum. This value was significantly higher than the 22.6% that was obtained when untreated rice straw was used. In addition, SEM analysis of pretreated rice straw revealed that EBI caused apparent damage to the surface of the rice straw. Furthermore, EBI pretreatment was found to increase the crystalline portion of the rice straw. Finally, the crystallinity and enzyme digestibility were found to be strongly correlated between rice straw samples that were pretreated by EBI under different conditions.",

keywords = "Biofuel, Biomass, Electron beam irradiation, Lignocellulose, Pretreatment",

author = "Bak, {Jin Seop} and Ko, {Ja Kyong} and Han, {Young Hwan} and Lee, {Byung Cheol} and Choi, {In Geol} and Kim, {Kyoung Heon}",

note = "Funding Information: This work was supported by the National Nuclear R&D Program (Grant No. M2 08B020028010) of MEST/KOSEF and by a Grant (20070301-034-013) from BioGreen 21 Program, Rural Development Administration, Republic of Korea.",

year = "2009",

month = feb,

doi = "10.1016/j.biortech.2008.09.010",

language = "English",

volume = "100",

pages = "1285--1290",

journal = "Bioresource technology",

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TY - JOUR

T1 - Improved enzymatic hydrolysis yield of rice straw using electron beam irradiation pretreatment

AU - Bak, Jin Seop

AU - Ko, Ja Kyong

AU - Han, Young Hwan

AU - Lee, Byung Cheol

AU - Choi, In Geol

AU - Kim, Kyoung Heon

N1 - Funding Information: This work was supported by the National Nuclear R&D Program (Grant No. M2 08B020028010) of MEST/KOSEF and by a Grant (20070301-034-013) from BioGreen 21 Program, Rural Development Administration, Republic of Korea.

PY - 2009/2

Y1 - 2009/2

N2 - Rice straw was irradiated using an electron beam at currents and then hydrolyzed with cellulase and β-glucosidase to produce glucose. The pretreatment by electron beam irradiation (EBI) was found to significantly increase the enzyme digestibility of rice straw. Specifically, when rice straw that was pretreated by EBI at 80 kGy at 0.12 mA and 1 MeV was hydrolyzed with 60 FPU of cellulase and 30 CBU of β-glucosidase, the glucose yield after 132 h of hydrolysis was 52.1% of theoretical maximum. This value was significantly higher than the 22.6% that was obtained when untreated rice straw was used. In addition, SEM analysis of pretreated rice straw revealed that EBI caused apparent damage to the surface of the rice straw. Furthermore, EBI pretreatment was found to increase the crystalline portion of the rice straw. Finally, the crystallinity and enzyme digestibility were found to be strongly correlated between rice straw samples that were pretreated by EBI under different conditions.

AB - Rice straw was irradiated using an electron beam at currents and then hydrolyzed with cellulase and β-glucosidase to produce glucose. The pretreatment by electron beam irradiation (EBI) was found to significantly increase the enzyme digestibility of rice straw. Specifically, when rice straw that was pretreated by EBI at 80 kGy at 0.12 mA and 1 MeV was hydrolyzed with 60 FPU of cellulase and 30 CBU of β-glucosidase, the glucose yield after 132 h of hydrolysis was 52.1% of theoretical maximum. This value was significantly higher than the 22.6% that was obtained when untreated rice straw was used. In addition, SEM analysis of pretreated rice straw revealed that EBI caused apparent damage to the surface of the rice straw. Furthermore, EBI pretreatment was found to increase the crystalline portion of the rice straw. Finally, the crystallinity and enzyme digestibility were found to be strongly correlated between rice straw samples that were pretreated by EBI under different conditions.

KW - Biofuel

KW - Biomass

KW - Electron beam irradiation

KW - Lignocellulose

KW - Pretreatment

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DO - 10.1016/j.biortech.2008.09.010

M3 - Article

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SN - 0960-8524

VL - 100

SP - 1285

EP - 1290

JO - Bioresource technology

JF - Bioresource technology

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ER -

Improved enzymatic hydrolysis yield of rice straw using electron beam irradiation pretreatment

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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