Navigation Links
Cellulosic ethanol: Expanding options, identifying obstacles
Date:4/9/2010

This release is available in Spanish.

Agricultural Research Service (ARS) scientists are figuring out how to turn wheat straw into ethanol "gold," and learning more about the bacteria that can "infect" ethanol plants and interfere with fuel production.

At the ARS National Center for Agricultural Utilization Research (NCAUR) in Peoria, Ill., ARS chemist Badal Saha conducted a 5-year study that examined whether wheat straw--a crop residue left over after the grain has been harvested--could have commercial potential for cellulosic ethanol production.

Saha found he could access and ferment almost all the plant sugars in the biofeedstock when it was pretreated with alkaline peroxide and then broken down by enzymes. This process released even hard-to-reach sugars in plant cell walls, which significantly boosted the overall ethanol output to around 93 gallons per ton of wheat straw.

But the same environments that facilitate fermentation can also nurture microorganisms that "infect" ethanol production facilities and disrupt output. ARS geneticist Tim Leathers collected bacteria from samples at commercial ethanol facilities, including a wet-mill facility that had never been dosed with antibiotics and a dry-grind facility that periodically dosed with antibiotics after bacterial outbreaks. He found that most of the bacterial isolates he collected from both facilities were different types of lactic acid bacteria.

Meanwhile, ARS microbiologist Ken Bischoff developed a model for simulating bacterial contamination and infection. He found that when test cultures were inoculated with Lactobacillus fermentum--one of the most common sources of bacterial infections in ethanol plants--ethanol yields decreased by 27 percent. Sometimes the "infection" could be cured with antibiotics, but he also found one bacterial strain that was already resistant to treatment.

Results from this research have been published in several journals, including Biotechnology and Bioengineering, the Journal of Biobased Materials and Bioenergy, and the Journal of Industrial Microbiology and Biotechnology.


'/>"/>

Contact: Ann Perry
ann.perry@ars.usda.gov
301-504-1628
United States Department of Agriculture-Research, Education, and Economics
Source:Eurekalert

Related biology news :

1. Genencor Wins The American Institute of Chemical Engineers (AIChE) Sustainable Energy Award For Accellerase(R) Cellulosic Ethanol Enzymes
2. Cellulosic biofuel technology will generate low-cost green fuel, says major study
3. Concordia University leads academic team for national Cellulosic Biofuels Network
4. Process can cut the cost of making cellulosic biofuels
5. Model microbial community for studying expanding dead zones characterized
6. GEN reports on expanding NextGen sequencing applications
7. Expanding cell girth indicates seriousness of breast cancer
8. European Union forests expanding, absorbing carbon at surprisingly high rate: study
9. Identifying molecular targets for diabetes-related ED
10. University of the Basque Country develops system for identifying illnesses in Paraguay
11. A sticky solution for identifying effective probiotics
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/2/2016)... The Department of Transport Management (DOTM) of ... project, for the , Supply and Delivery of ... Infrastructure , to Decatur , ... Management Solutions. Numerous renowned international vendors participated in the tendering ... selected for the most compliant and innovative solution. The contract ...
(Date:5/24/2016)... superior patient care by providing unparalleled technology to leaders of the medical imaging industry. ... recently added to the range of products distributed by Ampronix. Photo - ... ... ... ...
(Date:5/9/2016)... DUBAI , UAE, May 9, 2016 ... choice when it comes to expanding freedom for high ... Even in today,s globally connected world, there ... online conferencing system could ever duplicate sealing your deal ... are obtaining second passports by taking advantage of citizenship ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... Charm Sciences, Inc. ... test has received AOAC Research Institute approval 061601. , “This is another AOAC-RI ... stated Bob Salter, Vice President of Regulatory and Industrial Affairs. “The Peel Plate ...
(Date:6/23/2016)... , ... June 23, 2016 , ... STACS DNA Inc., ... Leader at the Arkansas State Crime Laboratory, has joined STACS DNA as a Field ... DNA team,” said Jocelyn Tremblay, President and COO of STACS DNA. “In further expanding ...
(Date:6/23/2016)... On Wednesday, June 22, 2016, the NASDAQ Composite ... Jones Industrial Average edged 0.27% lower to finish at 17,780.83; ... has initiated coverage on the following equities: Infinity Pharmaceuticals Inc. ... NKTR ), Aralez Pharmaceuticals Inc. (NASDAQ: ARLZ ), ... more about these stocks by accessing their free trade alerts ...
(Date:6/23/2016)... ReportsnReports.com adds 2016 global ... pharmaceuticals section with historic and forecast data along ... Complete report on the Cell Culture ... companies and supported with 261 tables and figures ... The Global Cell Culture Media Industry ...
Breaking Biology Technology: