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Title: Treatment of biomass to obtain fermentable sugars

Patent ·
OSTI ID:1018212

Biomass is pretreated using a low concentration of aqueous ammonia at high biomass concentration. Pretreated biomass is further hydrolyzed with a saccharification enzyme consortium. Fermentable sugars released by saccharification may be utilized for the production of target chemicals by fermentation.

Research Organization:
US Department of Energy (USDOE), Washington, DC (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
04-03-CA-70224
Assignee:
E. I. du Pont de Nemours and Company (Wilmington, DE); Alliance For Sustainable Energy LLC (Golden, CO)
Patent Number(s):
7,932,063
Application Number:
11/402,757
OSTI ID:
1018212
Country of Publication:
United States
Language:
English

References (50)

New insights and novel developments in clostridial acetone/butanol/isopropanol fermentation journal June 1998
Production of Acetic Acid by Clostridium thermoaceticum book January 1997
Propanol as an end product of threonine fermentation journal September 2004
Improving Digestibility of Straws for Ruminant Feed by Aqueous Ammonia journal July 1972
Ammonia recycled percolation process for pretreatment of herbaceous biomass journal March 1996
A Gluconobacter oxydans mutant converting glucose almost quantitatively to 5-keto-d-gluconic acid journal September 2004
Cellulose Hydrolysis Under Extremely Low Sulfuric Acid and High-Temperature Conditions book January 2001
Development of an industrially stable process for l-threonine fermentation by an l-methionine-auxotrophic mutant of Escherichia coli journal January 2000
Pretreatment and fractionation of corn stover by ammonia recycle percolation process journal December 2005
Optimization of the ammonia fiber explosion (AFEX) treatment parameters for enzymatic hydrolysis of corn stover journal December 2005
Enhancement of enzymatic cellulose hydrolysis using a novel type of bioreactor with intensive stirring induced by electromagnetic field journal February 1996
Ethanol production from corn cob pretreated by the ammonia steeping process using genetically engineered yeast journal September 1996
Efficient pyruvate production by a multi-vitamin auxotroph of Torulopsis glabrata : key role and optimization of vitamin levels journal June 2001
Production of Optically Pure D-Lactic Acid in Mineral Salts Medium by Metabolically Engineered Escherichia coli W3110 journal January 2003
Combined sugar yields for dilute sulfuric acid pretreatment of corn stover followed by enzymatic hydrolysis of the remaining solids journal December 2005
Alkaline and Peracetic Acid Pretreatments of Biomass for Ethanol Production book January 1999
Recommended Name: Aminopeptidase B journal November 1997
Corn-Milling Pretreatment with Anhydrous Ammonia journal January 2003
Bioconversion of waste cellulose by using an attrition bioreactor journal January 1983
Features of promising technologies for pretreatment of lignocellulosic biomass journal April 2005
Use of Dinitrosalicylic Acid Reagent for Determination of Reducing Sugar journal March 1959
Acetic acid production by Dekkera/Brettanomyces yeasts journal January 2002
Microbial Cellulose Utilization: Fundamentals and Biotechnology journal September 2002
Enhanced propionic acid fermentation byPropionibacterium acidipropionici mutant obtained by adaptation in a fibrous-bed bioreactor journal January 2005
Production of 2,3-Butanediol from Pretreated Corn Cob by Klebsiella oxytoca in the Presence of Fungal Cellulase book January 1997
Nomenclature Committee of the International Union of Biochemistry andMolecular Biology (NC‐IUBMB) journal September 1999
Kinetics of the enzymatic hydrolysis of cellulose: 1. A mathematical model for a batch reactor process journal July 1985
Fermentation of barley straw by anaerobic rumen bacteria and fungi in axenic culture and in co-culture with methanogens journal November 1989
Pretreatment with Ammonia Water for Enzymatic Hydrolysis of Corn Husk, Bagasse, and Switchgrass journal January 2001
Enzymatic Evaluation of Processes for Improving Agricultural Wastes for Ruminant Feeds journal July 1971
The saccharification of corn stover by cellulase from Penicillium funiculosum journal January 1991
Fractionation of corn stover by hot-water and aqueous ammonia treatment journal January 2006
Benzene-Free Synthesis of Adipic Acid journal April 2002
Xylitol production from high xylose concentration: evaluation of the fermentation in bioreactor under different stirring rates journal August 2003
Metabolic engineering of aerobic succinate production systems in Escherichia coli to improve process productivity and achieve the maximum theoretical succinate yield journal March 2005
Effect of cysteine on methionine production by a regulatory mutant of Corynebacterium lilium journal February 2005
Technologies for butanol recovery integrated with fermentations journal March 1992
Optimization of nitrogen for enhanced citric acid productivity by a 2-deoxy -glucose resistant culture of NG-280 journal March 2005
Ammonia-recycled percolation process for pretreatment of biomass feedstock journal September 1995
Complete and efficient enzymic hydrolysis of pretreated wheat straw journal April 2002
Development of a Process for the Biotechnological Large-Scale Production of 4-Hydroxyvalerate-Containing Polyesters and Characterization of Their Physical and Mechanical Properties journal March 2001
Acetone-butanol fermentation revisited. journal January 1986
Extractive fermentation for butyric acid production from glucose byClostridium tyrobutyricum journal February 2003
Pyruvic Acid Production by an F 1 -ATPase-defective Mutant of Escherichia coli W1485 lip2 journal January 1994
Production ofL(+)-lactic acid from glucose and starch by immobilized cells ofRhizopus oryzae in a rotating fibrous bed bioreactor journal August 2002
Ethanol production by Kluyveromyces marxianus IMB3 during growth on straw-supplemented whiskey distillery spent wash at 45 °C journal November 1997
Process optimization of continuous gluconic acid fermentation by isolated yeast-like strains ofAureobasidium pullulans journal January 2005
Alkaline peroxide delignification of agricultural residues to enhance enzymatic saccharification journal January 1984
Enhanced production of itaconic acid from corn starch and market refuse fruits by genetically manipulated Aspergillus terreus SKR10 journal October 2002
Fermentative Production of l -Arginine journal October 1972