Document Detail


Pretreatment of Siam weed stem by several chemical methods for increasing the enzymatic digestibility.
MedLine Citation:
PMID:  20349449     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Siam weed [Chromolaena odorata (L.) King & Robinson], an invasive exotic weed in China, was proposed as a feedstock for bioethanol production. This would be a promising way of using for an invasive weed that needs management and control. It was found that the glucan content of the weed stem was similar to that of sugarcane bagasse, but higher than those of corn stover and wheat straw. Several chemical pretreatment methods were applied to the weed stem to increase its enzymatic digestibility. Mild sulfuric acid (<120 degrees C) or alkali pretreatment did not markedly increase the enzymatic digestibility. However, peracetic acid (PAA) pretreatment dramatically enhanced the enzymatic hydrolysis of the weed stem. Compared to some other common agricultural residues, the weed stem was more difficult to pretreat and digest by cellulase. Fourier transform infrared (FTIR) spectra analysis indicated that the cellulose-related bands became more intensive after pretreatment, especially for PAA-pretreated samples. According to X-ray diffraction spectra, the biomass solids had higher crystallinity indices after pretreatment, although these indices were similar for all of the pretreated samples.
Authors:
Xuebing Zhao; Lihua Zhang; Dehua Liu
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biotechnology journal     Volume:  5     ISSN:  1860-7314     ISO Abbreviation:  Biotechnol J     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-10     Completed Date:  2010-08-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101265833     Medline TA:  Biotechnol J     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  493-504     Citation Subset:  IM    
Affiliation:
Institute of Applied Chemistry, Department of Chemical Engineering, Tsinghua University, Beijing, China. zhaoxb04@mails.tsinghua.edu.cn
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MeSH Terms
Descriptor/Qualifier:
Bioelectric Energy Sources*
Biomass*
Chromolaena / chemistry*
Glucose / metabolism
Lignin / chemistry,  metabolism*
Peracetic Acid / chemistry
Sodium Hydroxide / chemistry
Spectroscopy, Fourier Transform Infrared
Sulfuric Acids / chemistry
Temperature
X-Ray Diffraction
Xylose / metabolism
Chemical
Reg. No./Substance:
0/Sulfuric Acids; 0/Xylose; 11132-73-3/lignocellulose; 1310-73-2/Sodium Hydroxide; 50-99-7/Glucose; 7664-93-9/sulfuric acid; 79-21-0/Peracetic Acid; 9005-53-2/Lignin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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