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The inhomogeneity of corn stover and its effects on bioconversion
Chen Hongzhang; Li Hongqiang; Liu Liying; Chen, HZ
Source PublicationBIOMASS & BIOENERGY
AbstractCompared with wood, corn stover (CS) is a low-value raw material. Traditionally, CS is used in whole. To develop a CS high-value utilization process, the inhomogeneity of CS and its effects on bioconversion were investigated. The results showed that the chemical compositions of parts from CS had a remarkable difference. The Standard Deviation of cellulose, hemicellulose, Klason lignin, ash of CS parts (leaf, shell, core, node) were 3.09, 9.29, 3.32 and 4.58, respectively. The percents of fiber cell, parenchyma cell, epidermis cell and vessel cell were 30%, 30%, 10%, 30% (in leaf), 50%, 20%, 25%, 5% (in shell), 30%, 60%, 10% and 0% (in core), respectively. The inhomogeneity of CS chemical compositions and cell types affects its enzymatic hydrolysis and fermentation performances. The cellulose enzymatic hydrolysis ratio of corn core at 48 h was 130% higher than the leaf. After 7 d solid state fermentation, the filter paper activity of shell fiber, leaf fiber, core fiber, shell mixed cells, leaf mixed cells and core mixed cells were 40.6, 62.9, 64.1, 67.3, 194.2 and 154.0 IU g(-1) dry medium, respectively. The differences proved that the whole utilization process was unsatisfactory and suggested the potential of CS fractionation. Based the results, a pilot scale CS fractionation process (CS- Steam explosion-Water washing-Mechanical fiber fractionation-fiber cell and miscellaneous cells) was tested and divided corn stover into fiber cell and miscellaneous cells in the ratio of 1:1 approximately. The study showed the essentiality of CS fractionation and feasibility of fractionation by a simple method. (C) 2011 Elsevier Ltd. All rights reserved.
KeywordCorn (Zea Mays L.) Stover Fractionation Steam Explosion Enzymatic Hydrolysis Ethanol Cellulase
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
Indexed BySCI
WOS Research AreaAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS SubjectAgricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS IDWOS:000290238200040
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Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorChen, HZ
AffiliationChinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Chen Hongzhang,Li Hongqiang,Liu Liying,et al. The inhomogeneity of corn stover and its effects on bioconversion[J]. BIOMASS & BIOENERGY,2011,35(5):1940-1945.
APA Chen Hongzhang,Li Hongqiang,Liu Liying,&Chen, HZ.(2011).The inhomogeneity of corn stover and its effects on bioconversion.BIOMASS & BIOENERGY,35(5),1940-1945.
MLA Chen Hongzhang,et al."The inhomogeneity of corn stover and its effects on bioconversion".BIOMASS & BIOENERGY 35.5(2011):1940-1945.
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20131106-942-复件 1-s2(883KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
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