Document Detail


Enhancing alfalfa conversion efficiencies for sugar recovery and ethanol production by altering lignin composition.
MedLine Citation:
PMID:  21474304     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Alfalfa (Medicago sativa L.) biomass was evaluated for biochemical conversion into ethanol using dilute-acid and ammonia pretreatments. The two alfalfa lines compared were a reduced S-lignin transgenic cultivar generated through down regulation of the caffeic acid O-methyltransferase gene and a wild-type control. Both were harvested at two maturities. All the samples had similar carbohydrate contents including a mean composition of 316g glucan and 497g total neutral carbohydrates per kg dry biomass, which corresponds to a theoretic ethanol yield of 382l/ton. Ethanol yields for alfalfa stems pretreated with dilute-acid were significantly impacted by harvest maturity and lignin composition, whereas when pretreated with dilute-ammonia, yield was solely affected by lignin composition. Use of a recombinant xylose-fermenting Saccharomyces strain, for converting the ammonia pretreated alfalfa samples, further increased ethanol yields. Ethanol yields for the xylose-fermenting yeast were 232-278l/ton and were significantly enhanced for the reduced S lignin cultivars.
Authors:
Bruce S Dien; David J Miller; Ronald E Hector; Richard A Dixon; Fang Chen; Mark McCaslin; Peter Reisen; Gautam Sarath; Michael A Cotta
Related Documents :
1141434 - Bile alcohol metabolism in man. conversion of 5beta-cholestane-3alpha, 7alpha,12alpha, ...
19156264 - Identification of metabolites in human hepatic bile using 800 mhz 1h nmr spectroscopy, ...
7303034 - Rapid analysis of human fecal bile acids.
6650204 - The importance of bile and pancreatic juice for fat-induced release of neurotensin-like...
18007394 - Facile synthesis of 5, 6, 7, 8-tetrahydropyrimido [4, 5-b]-quinoline derivatives.
16581234 - Characterisation and foaming properties of hydrolysates derived from rapeseed isolate.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-15
Journal Detail:
Title:  Bioresource technology     Volume:  -     ISSN:  1873-2976     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-4-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Published by Elsevier Ltd.
Affiliation:
Bioenergy Research Unit, United States Department of Agriculture, Agricultural Research Service, National Center for Agricultural Utilization Research, Peoria, IL 61604, United States.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

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


Previous Document:  Waste molasses alone displaces glucose-based medium for microalgal fermentation towards cost-saving ...
Next Document:  Alkyl-methylimidazolium ionic liquids affect the growth and fermentative metabolism of Clostridium s...