Navigation Links
Engineered bacteria make fuel from sunlight
Date:1/7/2013

Chemists at the University of California, Davis, have engineered blue-green algae to grow chemical precursors for fuels and plastics -- the first step in replacing fossil fuels as raw materials for the chemical industry.

"Most chemical feedstocks come from petroleum and natural gas, and we need other sources," said Shota Atsumi, assistant professor of chemistry at UC Davis and lead author on the study published Jan. 7 in the Proceedings of the National Academy of Sciences.

The U.S. Department of Energy has set a goal of obtaining a quarter of industrial chemicals from biological processes by 2025.

Biological reactions are good at forming carbon-carbon bonds, using carbon dioxide as a raw material for reactions powered by sunlight. It's called photosynthesis, and cyanobacteria, also known as "blue-green algae," have been doing it for more than 3 billion years.

Using cyanobacteria to grow chemicals has other advantages: they do not compete with food needs, like corn's role in the creation of ethanol.

The challenge is to get the cyanobacteria to make significant amounts of chemicals that can be readily converted to chemical feedstocks. With support from Japanese chemical manufacturer Asahi Kasei Corp., Atsumi's lab at UC Davis has been working on introducing new chemical pathways into the cyanobacteria.

The researchers identified enzymes from online databases that carried out the reactions they were looking for, and then introduced the DNA for these enzymes into the cells. Working a step at a time, they built up a three-step pathway that allows the cyanobacteria to convert carbon dioxide into 2,3 butanediol, a chemical that can be used to make paint, solvents, plastics and fuels.

Because enzymes may work differently in different organisms, it is nearly impossible to predict how well the pathway will work before testing it in an experiment, Atsumi said.

After three weeks growth, the cyanobacteria yielded 2.4 grams of 2,3 butanediol per liter of growth medium -- the highest productivity yet achieved for chemicals grown by cyanobacteria and with potential for commercial development, Atsumi said.

Atsumi hopes to tune the system to increase productivity further and experiment with other products, while corporate partners explore scaling up the technology.


'/>"/>

Contact: Andy Fell
ahfell@ucdavis.edu
530-752-4533
University of California - Davis
Source:Eurekalert

Related biology news :

1. Production of 5-aminovaleric and glutaric acid by metabolically engineered microorganism
2. Engineered immune cells produce complete response in child with an aggressive pediatric leukemia
3. Leukemia patients remain in remission more than 2 years after engineered T cell therapy
4. Bioengineered marine algae expands environments where biofuels can be produced
5. Soft Robotics: A groundbreaking new journal on engineered soft devices that Interact with Living Systems
6. Engineered bacteria can make the ultimate sacrifice
7. Ecologist: Genetically engineered algae for biofuel pose potential risks that should be studied
8. Success of engineered tissue depends on where its grown
9. Lab-engineered kidney project reaches early milestone
10. Engineered robot interacts with live fish
11. Engineered microvessels provide a 3-D test bed for human diseases
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/14/2016)... March 14, 2016 NXTD ) ("NXT-ID" ... commerce market, announces the airing of a new series of ... week of March 21 st .  The commercials will air ... popular Squawk on the Street show. --> NXTD ... growing mobile commerce market, announces the airing of a new ...
(Date:3/11/2016)... 11, 2016 --> ... report "Image Recognition Market by Technology (Pattern Recognition), by ... by Deployment Type (On-Premises and Cloud), by Industry Vertical ... by MarketsandMarkets, the global market is expected to grow ... Billion by 2020, at a CAGR of 19.1%. ...
(Date:3/9/2016)... March 9, 2016 This BCC Research report ... of the RNA Sequencing (RNA Seq) market for the ... instruments, tools and reagents, data analysis, and services. ... of the RNA-Sequencing market such as RNA-Sequencing tools and ... main factors affecting each segment and forecast their market ...
Breaking Biology News(10 mins):
(Date:4/29/2016)... ... April 29, 2016 , ... Summit for Stem Cell has ... development of a patient-specific stem cell therapy for the treatment of Parkinson’s disease. The ... Jeanne Loring at The Scripps Research Institute in San Diego, CA. , ...
(Date:4/28/2016)... ... April 28, 2016 , ... ... support for Connecticut's innovative, growing companies, today announced the launch of VentureClash ... technology (fintech) companies. , “VentureClash looks to attract the best early-stage ...
(Date:4/27/2016)... ... April 27, 2016 , ... ... testing technology at the Spring 2016 Marijuana Business Conference and Expo. Shimadzu’s high-performance ... solvents, heavy metals, and more. Expo attendees can stop by booth 1021 to ...
(Date:4/27/2016)... ... April 27, 2016 , ... The Board of ... appointment of John Tilton as Chief Commercial Officer.  Mr. Tilton joined Biohaven from ... founding commercial leaders responsible for the commercialization of multiple orphan drug indications. ...
Breaking Biology Technology: