Navigation Links
More efficient production of biofuels from waste with the help of modified yeasts
Date:8/29/2013

A significant portion of the petroleum consumed by the transport sector must be replaced in the long term by renewable energy. Therefore, it is of the utmost economic and ecological importance to optimise the production of biofuels from renewable raw materials. Researchers from VIB who are associated with KU Leuven have developed yeast strains that produce bio-ethanol from waste with an unprecedented efficiency. As a result, they are well placed to become important players on a global scale in this burgeoning industry.

Johan Thevelein (VIB/KU Leuven): "Our new yeast strains come at a good moment because the entire industry of second-generation biofuels has now clearly come quite a bit closer to becoming economically viable. We are working at full capacity to further improve our yeast strains in order to continue to increase the efficiency of the fermentations, and in this way we hope to further strengthen our leadership position in this burgeoning industrial sector."

Energy consumption of the transport sector

The production of bio-ethanol from waste streams, post-harvest waste (e.g., straw, wheat bran, empty corn husks or corn stalks) and wood (waste) is generally considered to be one of the most sustainable and climate-friendly technologies for producing fuels for the transport sector (road and air traffic). This sector is responsible for more than 10% of the energy consumed in Flanders. In 2011, the portion of energy that was renewable was only 4%, with bio-diesel as the predominant source (86%), followed by bio-ethanol (12%) and then green electricity (2%). In the future, the portion of renewable energy should increase even further to reach the minimum targeted level of 10% renewable energy by 2020.

Degrading all of the sugars in waste

Yeasts are used in the production of bio-ethanol from waste streams. Until recently, there were a number of important obstacles to making efficient bio-ethanol production attainable. One of these was the fact that no one single strain of yeast was capable of converting all of the sugars in the biomass into ethanol. The pentose sugars, in particular, posed a big problem. In recent years, a great deal of progress has been made with genetically modified yeast strains that are also able to ferment pentose sugars, but these laboratory strains did not prove to be entirely suitable for industrial fermentation processes.

Mekonnen Demeke and Johan Thevelein (VIB/KU Leuven) have now cleared this obstacle out of the way. They did this by changing the DNA of the best industrial strains of yeast used for bio-ethanol production in such a way that the modified yeast strains were also able to very easily ferment pentose sugars while at the same time becoming even more robust than they were. Their new yeast strains have also proved to efficiently and quickly ferment various types of biomass into bio-ethanol in real conditions, outside of the lab. The interest in this new strain from the industry itself is great, because the efficiency with which these yeast strains make bio-ethanol from waste is unprecedented.


'/>"/>

Contact: Sooike Stoops
info@vib.be
32-924-46611
VIB (the Flanders Institute for Biotechnology)
Source:Eurekalert

Related biology news :

1. New possibilities for efficient biofuel production
2. Recruiters matchen het efficiƫntst met CRMATCH en ELISE
3. Most Efficient Matching in Recruitment With CRMATCH and ELISE
4. Practice makes the brains motor cortex more efficient, Pitt researchers say
5. Bio-inspired design may lead to more energy efficient windows
6. New ultra-efficient HPC data center debuts
7. Researchers say sunlight yields more efficient carbon dioxide to methanol model
8. Engineering cells for more efficient biofuel production
9. Why some grasses evolved a more efficient photosynthesis and others didnt
10. Rice unveils super-efficient solar-energy technology
11. Dealing with power outages more efficiently
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/7/2016)...   Veridium , a leader in biometrics-based ... CEO James Stickland . Stickland, a seasoned ... has served in senior executive roles for HSBC, ... expanding a pipeline of venture capital and accelerating ... served as managing director of U.K.-based fintech firm ...
(Date:12/5/2016)...  The Office of Justice Programs, National Institute ... Enhance or Replace Medico Legal Autopsies?" on NIJ.gov.  ... replacing forensic autopsies with postmortem X-ray computed tomography, ... response to recommendations made by The National Academy ... as a potential component of medicolegal death investigations. ...
(Date:11/30/2016)... Nov. 30, 2016  higi SH llc (higi) ... initiative targeting national brands, industry thought-leaders and celebrity ... respective audiences for taking steps to live healthier, ... in 2012, higi has built the largest self-screening ... 38 million people who have conducted over 185 ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... , Dec. 8, 2016 Soligenix, Inc. (OTCQB: ... focused on developing and commercializing products to treat rare ... today that it will be hosting an Investor Webcast ... on the origins of innate defense regulators (IDRs) as ... of oral mucositis and the recently announced and published ...
(Date:12/8/2016)... Dec. 8, 2016 Savannah River Remediation ... and selected NewTechBio,s NT-MAX Lake & Pond ... beneficial bacteria, in conjunction with Hexa Armor/ Rhombo ... with National Pollutant Discharge Elimination System requirements. ... a steady history of elevated pH levels, above ...
(Date:12/8/2016)... , Dec. 8, 2016  Partnering to fuel ... Ben Franklin Technology Partners of Southeastern Pennsylvania ... ("IHG"), the parent company of Independence Blue Cross; and ... announced their intentions for a $6 million funding initiative ... healthcare startups. Responding to a burgeoning economic ...
(Date:12/7/2016)... ... December 07, 2016 , ... ... I/II dose escalation and expansion clinical trial for its lead drug candidate, AC0010, ... purpose of the trial was to determine the safety, antitumor activity, and recommended ...
Breaking Biology Technology: