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Cellulase deactivation based kinetic modeling of enzymatic hydrolysis of steam-exploded wheat straw
Zhang, Yu1,2; Xu, Jing-Liang1; Xu, Hui-Juan1; Yuan, Zhen-Hong1; Guo, Ying1,2
2010-11-01
Source PublicationBIORESOURCE TECHNOLOGY
ISSN0960-8524
Volume101Issue:21Pages:8261-8266
Contribution Rank[Zhang, Yu; Xu, Jing-Liang; Xu, Hui-Juan; Yuan, Zhen-Hong; Guo, Ying] Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China; [Zhang, Yu; Guo, Ying] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Corresponding Authoryuanzh@ms.giec.ac.cn
AbstractApplying mass action law and quasi-steady-state theory, two cellulase kinetic models namely Eqs. (5) and (8) were developed on the basis of the first and second order reactions of enzyme deactivation, respectively. The two models are compared according to analysis of experimental data from enzymatic hydrolysis steam-exploded wheat straw. Both simulation and prediction results show Eq. (8) has much higher accuracy than Eq. (5). Analysis of initial hydrolysis rate is also in accordance with Eq. (8) and against Eq. (5). Fitted values of k(2) (the rate constant of product formation), k(de2) (the rate constant of enzyme deactivation) and K(e) (the equilibrium constant) determined from Eq. (8) are 0.4732 h(-1), 0.4011 L/(h g), and 16.8597 g/L, respectively. The higher the enzyme concentration is, the larger the deactivation rate. (C) 2010 Elsevier Ltd. All rights reserved.
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Other AbstractApplying mass action law and quasi-steady-state theory, two cellulase kinetic models namely Eqs. (5) and (8) were developed on the basis of the first and second order reactions of enzyme deactivation, respectively. The two models are compared according to analysis of experimental data from enzymatic hydrolysis steam-exploded wheat straw. Both simulation and prediction results show Eq. (8) has much higher accuracy than Eq. (5). Analysis of initial hydrolysis rate is also in accordance with Eq. (8) and against Eq. (5). Fitted values of k(2) (the rate constant of product formation), k(de2) (the rate constant of enzyme deactivation) and K(e) (the equilibrium constant) determined from Eq. (8) are 0.4732 h(-1), 0.4011 L/(h g), and 16.8597 g/L, respectively. The higher the enzyme concentration is, the larger the deactivation rate.
KeywordCellulase Kinetics Enzyme Deactivation Mathematical Model Enzymatic Hydrolysis Of Cellulose Simulation And Prediction
Subject AreaAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
DOI10.1016/j.biortech.2010.06.015
WOS Subject ExtendedAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
URL查看原文
WOS KeywordCOTTON GIN WASTE ; INDUCED INACTIVATION ; CORN STOVER ; OPTIMIZATION ; ETHANOL ; PRETREATMENT ; REACTOR
Indexed BySCI
Language英语
Funding OrganizationChinese Academy of Sciences [KSCX-YW-11-A3, KGCX2-YW-335, KSCX2-YW-G-075-9]; National High Technology Research and Development Program of China (863 program) [2007AA05Z406, 2009AA05Z436]
WOS SubjectAgricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS IDWOS:000280570900035
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/8471
Collection中国科学院广州能源研究所
生物质能源生化转化实验室
Affiliation1.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Yu,Xu, Jing-Liang,Xu, Hui-Juan,et al. Cellulase deactivation based kinetic modeling of enzymatic hydrolysis of steam-exploded wheat straw[J]. BIORESOURCE TECHNOLOGY,2010,101(21):8261-8266.
APA Zhang, Yu,Xu, Jing-Liang,Xu, Hui-Juan,Yuan, Zhen-Hong,&Guo, Ying.(2010).Cellulase deactivation based kinetic modeling of enzymatic hydrolysis of steam-exploded wheat straw.BIORESOURCE TECHNOLOGY,101(21),8261-8266.
MLA Zhang, Yu,et al."Cellulase deactivation based kinetic modeling of enzymatic hydrolysis of steam-exploded wheat straw".BIORESOURCE TECHNOLOGY 101.21(2010):8261-8266.
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