Navigation Links
New yeast can ferment more sugar, make more cellulosic ethan
Date:6/7/2010

WEST LAFAYETTE, Ind. - Purdue University scientists have improved a strain of yeast that can produce more biofuel from cellulosic plant material by fermenting all five types of the plant's sugars.

Nathan Mosier, an associate professor of agricultural and biological engineering; Miroslav Sedlak, a research assistant professor of agricultural and biological engineering; and Nancy Ho, a research professor of chemical engineering, used genes from a fungus to re-engineer a yeast strain Ho developed at Purdue. The new yeast can ferment the sugar arabinose in addition to the other sugars found in plant material such as corn stalks, straw, switchgrass and other crop residues.

"Natural yeast can ferment three sugars: galactose, manose and glucose," Ho said. "The original Ho yeast added xylose to that, and now the fifth, arabinose, has been added."

The addition of new genes to the Ho yeast strain should increase the amount of ethanol that can be produced from cellulosic material. Arabinose makes up about 10 percent of the sugars contained in those plants.

In addition to creating this new arabinose-fermenting yeast, Mosier, Sedlak and Ho also were able to develop strains that are more resistant to acetic acid. Acetic acid, the main ingredient in vinegar, is natural to plants and released with sugars before the fermentation process during ethanol production. Acetic acid gets into yeast cells and slows the fermentation process, adding to the cost of ethanol production.

"It inhibits the microorganism. It doesn't produce as much biofuel, and it produces it more slowly," Mosier said. "If it slows down too much, it's not a good industrial process."

Mosier, Sedlak and Ho compared the genes in the more resistant strains to others to determine which genes made the yeast more resistant to acetic acid. By improving the expression of those genes, they increased the yeast's resistance.

Mosier said arabinose is broken down i
'/>"/>

Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Discovery: Yeast make plant hormone that speeds infection
2. You had me at hello: Frisky yeast know who to shmoo after 2 minutes
3. Genetic patterns rise from huge yeast samples
4. Scientists find new genes for cancer, other diseases in plants, yeast and worms
5. Sugar-hungry yeast to boost biofuel production
6. 2010 Yeast Genetics and Molecular Biology Meeting
7. Charles Drew cancer studies with yeast yield excellent results
8. Helpful yeast battles food-contaminating aflatoxin
9. Yeast missing sex genes undergo unexpected sexual reproduction
10. Jungle yeast
11. New study reveals the protein that makes phosphate chains in yeast
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/11/2014)... stem cells can stimulate neurogenesis in the brain of ... and improve tissue and function injury under the condition ... therapeutic effect of adipose-derived stem cells (ADSCs) transplantation in ... injury and neurogenesis in the brain of AD mice. ... Sciences, Tsinghua University, China transplanted ADSCs into the hippocampus ...
(Date:7/11/2014)... that let nerve cells send out electrical signals, Johns ... tactic that may offer a new way to protect ... responsible way. , Their findingthat naturally occurring insect ... for a closely related onesuggests that insecticides can be ... like bees. A summary of the research, led by ...
(Date:7/10/2014)... BEDFORD, Mass. , June 30, 2014  Aware, ... of biometrics software and services, previously announced on June ... a special cash dividend of $1.75 per share, or ... record date of July 10, 2014 and a payment ... notified by NASDAQ that it had set an ex-dividend ...
Breaking Biology News(10 mins):Potent spider toxin 'electrocutes' German, not American, cockroaches 2Potent spider toxin 'electrocutes' German, not American, cockroaches 3NASDAQ Sets Ex-Dividend Date for Aware, Inc.'s Special Cash Dividend of $1.75 Per Share 2
... 10 years has seen a huge increase in the popularity ... kept in our homes are monkeys, tarantulas, iguanas, salamanders, snakes, ... around the world develop their conservation and captive breeding programmes ... of exotic animals. To help develop that ...
... have argued that environmental regulations can negatively impact ... by George Mason University researcher Nicole Darnall shows ... not only offset the costs of regulations, but ... which looked at more than 2,600 manufacturing facilities ...
... give birth to offspring who become even heavier, resulting ... of Medicine researchers in Houston who found that chemical ... phenomenon called epigenetics -- could affect successive generations of ... United States and it,s increasingly recognized as a worldwide ...
Cached Biology News:The exotic side of veterinary science 2The exotic side of veterinary science 3Corporations can profit from being environmentally friendly 2The epigenetics of increasing weight through the generations 2
(Date:7/10/2014)... Montreal, QC (PRWEB) July 10, 2014 ... comfort and convenience. This rejuvenating device now comes with a ... that develops over time. , The new cup is thinner ... This design works to target rough, thin and uneven surfaces ... original firm cup for a stimulating treatment on areas such ...
(Date:7/10/2014)... , July 10, 2014  Kainos Capital, a ... brands, today announced that it has acquired the Slim-Fast ... in the business. Terms of the transaction were not ... and meal replacement business that markets ready-to-drink shakes, powders, ... North America and in the ...
(Date:7/10/2014)... April 15, 2014 -- According to the International ... nuclear security comes from terrorists acquiring sufficient quantities ... construct a crude nuclear explosive device. The IAEA ... trafficking have involved gram-level quantities, which can be ... According to a new study appearing this week ...
(Date:7/10/2014)... basis of psychiatric disorders has been extremely challenging because ... but are insufficient to cause disease. Now investigators reporting ... journal Cell Stem Cell describe a strategy ... interact with other risk factors or environmental exposures to ... pinpoints a genetic variant that may predispose individuals to ...
Breaking Biology Technology:Introducing a New Bonus Treatment Cup for EvoDerma’s NOOME Anti-Aging Motion 2Kainos Capital Acquires Slim-Fast From Unilever 2Sensitive detection method may help impede illicit nuclear trafficking 2New strategy could uncover genes at the root of psychiatric illnesses 2
... THE WOODLANDS, Texas, July 18, 2011 One of ... how to achieve Meaningful Use requirements in the coming ... in learning more about Meaningful Use requirements and how ... attend a free webinar at 1 p.m. EDT (10 ...
... A sort of Holy Grail for physicists and ... computer, operating on the highly complex principles of quantum ... capabilities far beyond even the most advanced modern supercomputers. ... as well as for incredibly detailed, data-heavy simulations of ...
... breath test, measuring the immune response to the H1N1 flu ... the people who have already been infected with the flu ... 2011, in IOP Publishing,s Journal of Breath Research , ... biomolecules that accumulate in response to the H1N1 strain. ...
Cached Biology Technology:Medicare HIT Incentive Update for the Oncology Practice - Free Educational Webinar 2Medicare HIT Incentive Update for the Oncology Practice - Free Educational Webinar 3U.Va.'s Pfister accomplishes breakthrough toward quantum computing 2U.Va.'s Pfister accomplishes breakthrough toward quantum computing 3U.Va.'s Pfister accomplishes breakthrough toward quantum computing 4'Swine flu' breath test could reduce future vaccination shortages, research suggests 2
Tris-EDTA Buffer Solution, 1X, pH 8.0, sterile, Molecular Biology Grade...
Rabbit polyclonal to Quinolinic acid ( Abpromise for all tested applications). Antigen: Synthetic quinolinic acid conjugated to bovine serum albumin....
... Signets FAST RED Chromogen ... chromogen,tablets and substrate buffer. FAST ... of alkaline phosphatase to produce ... noise. The ...
Chicken polyclonal to YebU ( Abpromise for all tested applications). Antigen: Full length YebU (Escherichia coli)...
Biology Products: