Title: Ethanol production in fermentation of mixed sugars containing xylose

Abstract

Xylose-utilizing Z. mobilis strains were found to have improved ethanol production when grown in medium containing mixed sugars including xylose if sorbitol or mannitol was included in the medium. The effect was seen in concentrations of mixed sugars where no growth lag period occurs, as well as in higher sugars concentrations.

Inventors:

Viitanen, Paul V. ^[1]; McCutchen, Carol M. ^[2]; Li, Xu ^[3]; Emptage, Mark ^[2]; Caimi, Perry G. ^[4]; Zhang, Min ^[5]; Chou, Yat-Chen ^[5]; Franden, Mary Ann ^[6]

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+ Show Inventor Affiliations

1. West Chester, PA
2. Wilmington, DE
3. Newark, DE
4. Kennett Square, PA
5. Lakewood, CO
6. Centennial, CO

Issue Date:

2009-12-08

Research Org.:

E.I. du Pont de Nemours and Company (Wilmington, DE) Alliance For Sustainable Energy, LLC (Golden, CO)

Sponsoring Org.:

USDOE

OSTI Identifier:

1013855

Patent Number(s):

7629156

Application Number:

US Patent Application 11/862,522

Assignee:

E.I. du Pont de Nemours and Company (Wilmington, DE); Alliance For Sustainable Energy, LLC (Golden, CO)

Patent Classifications (CPCs):

C - CHEMISTRY C12 - BIOCHEMISTRY C12N - MICROORGANISMS OR ENZYMES

C - CHEMISTRY C12 - BIOCHEMISTRY C12P - FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE {

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C - CHEMISTRY C12 - BIOCHEMISTRY C12N - MICROORGANISMS OR ENZYMES

C12N1/20 - Bacteria {

C - CHEMISTRY C12 - BIOCHEMISTRY C12P - FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE {

C12P7/065 - {with microorganisms other than yeasts}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E50/10 - Biofuels

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DOE Contract Number:  

FC36-03GO13146

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

60 APPLIED LIFE SCIENCES