Document Detail

Enhanced enzymatic saccharification of barley straw pretreated by ethanosolv technology.
MedLine Citation:
PMID:  20614256     Owner:  NLM     Status:  In-Data-Review    
The fermentable sugars in lignocellulosic biomass are derived from cellulose and hemicellulose, which are not readily accessible to enzymatic saccharification because of their recalcitrance. An ethanosolv pretreatment method was applied for the enzymatic saccharification of barley straw with an inorganic acid. The effects of four process variables (temperature, time, catalyst dose, and ethanol concentration) on the barley straw pretreatment were analyzed over a broad range using a small composite design and a response surface methodology. The yield of the residual solid and composition of the solid fraction differed as ethanosolv conditions varied within the experimental range. A glucan recovery, xylan recovery, and delignification were 85%, 14%, and 69% at center point conditions (170°C, 60 min, 1.0% (w/w) H(2)SO(4), and 50% (w/w) ethanol), respectively. Ethanosolv pretreatment removed lignin effectively. Additionally, the highest enzymatic digestibility of 85.3% was obtained after 72 h at center point conditions.
Youngran Kim; Anna Yu; Minhee Han; Gi-Wook Choi; Bongwoo Chung
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Publication Detail:
Type:  Journal Article     Date:  2010-07-08
Journal Detail:
Title:  Applied biochemistry and biotechnology     Volume:  163     ISSN:  1559-0291     ISO Abbreviation:  Appl. Biochem. Biotechnol.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-01-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8208561     Medline TA:  Appl Biochem Biotechnol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  143-52     Citation Subset:  IM    
Department of Bioprocess Engineering, Chonbuk National University, 664-14 1ga, Deokjin-Dong, Deokjin-Gu, Jeonju, 561-756, Korea.
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