Navigation Links
Enzymes from garden compost could favour bioethanol production
Date:3/8/2011

The researcher in question is Nadia Skorupa Parachin and the secret of her technique is enzymes that she extracted from garden soil. If ethanol can be successfully made from xylose then ethanol production could increase by over 20 per cent to the benefit of cheaper environmentally friendly fuel.

Ethanol is manufactured by fermenting sugars from plant material. At present, xylose is not used, despite being the second most common type of sugar found in nature. Succeeding with xylose requires good, quick enzymes that can get the yeast to also ferment the less appetising xylose.

Nadia Skorupa Parachin has tested her enzymes and the first results show that her enzymes bind xylose more efficiently than those that have been tested previously.

"In order for carbohydrates in forestry, plant and waste products to be used for ethanol production, enzymes are required in the yeast that 'eat up' the sugar and convert it into ethanol. If we just want to make use of the glucose then normal baker's yeast is sufficient. However, if the xylose is also to be converted to ethanol, then genetic modifications have to be made to the yeast", explains Ms Skorupa Parachin, who has recently patented her newly discovered enzymes.

Nadia Skorupa Parachin began by extracting DNA from a soil sample, then she cut it into small pieces. She was then able to build up a DNA library.

After that she identified the most appropriate genes by coupling enzyme activity to growth on xylose.

Ms Skorupa Parachin's decision to use soil is quite simply due to the fact that soil is considered the most diverse habitat on earth.

"One gram of soil contains ten billion bacteria! Enzymes and other proteins are found in almost unlimited numbers and can have all sorts of unexplored properties. I collected the soil sample from a garden in Hr, but any soil can be used", she points out.

The reason why no researcher has previously identified new enzymes for xylose in this way is because it is not all that easy. Marie Gorwa-Grauslund, who is Nadia Skorupa Parachin's supervisor, was the first person to realise that this genetic technique could work in this specific context. The technique, known as metagenomics, was originally used in environmental studies.

"The most interesting part is really the method itself. We have reasoned along entirely new lines. In fact, it has taken several months to develop the method for use in this area", explains Professor Gorwa-Grauslund.

The Lund researchers will now also take the chance to apply their modified metagenomics technique in other areas, for example, to isolate enzymes that allow microorganisms to cope with difficult industrial conditions, such as high temperatures and high acid levels.

"Robust microorganisms are very important if biological production is to be economically viable", says Marie Gorwa-Grauslund.

Ms Skorupa Parachin has now returned to her home country, Brazil. However, two or three other young researchers will continue to work on the technique. During the spring they will have chance to evaluate the new enzymes better.

"There are still a number of pieces of the jigsaw that must be put in place if ethanol production from xylose is to become financially viable. The process must be speeded up. But we hope that in the long term our method can help to make bioethanol production more efficient", says Marie Gorwa-Grauslund.


'/>"/>

Contact: Professor Marie Gorwa-Grauslund
Marie-Francoise.Gorwa-Grauslund@tmb.lth.se
46-462-220-619
Lund University
Source:Eurekalert

Related biology news :

1. 1 group of enzymes could have a positive impact on health, from cholesterol to osteoporosis
2. Team looks to the cow rumen for better biofuels enzymes
3. 2 bacterial enzymes confer resistanceto common herbicide, say MU researchers
4. Synthetic enzymes could help ID proteins
5. Dangerous plaques in blood vessels rupture by overproducing protein-busting enzymes
6. Newly identified enzymes help plants sense elevated CO2 and could lead to water-wise crops
7. Genencor Wins The American Institute of Chemical Engineers (AIChE) Sustainable Energy Award For Accellerase(R) Cellulosic Ethanol Enzymes
8. Developing enzymes to clean up pollution by explosives
9. Powe Award supports research on how enzymes enable the pathogenicity of 2 human disease organisms
10. New book, Untangling the Double Helix, explores enzymes responsible for maintaining genome integrity
11. New drug agent knocks out multiple enzymes in cancer pathway
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/19/2017)... The global military biometrics market ... by the presence of several large global players. The ... major players - 3M Cogent, NEC Corporation, M2SYS Technology, ... 61% of the global military biometric market in 2016. ... military biometrics market boast global presence, which has catapulted ...
(Date:4/17/2017)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or ... 2016 Annual Report on Form 10-K on Thursday April 13, 2017 ... ... Investor Relations section of the Company,s website at http://www.nxt-id.com  under ... http://www.sec.gov . 2016 Year Highlights: ...
(Date:4/13/2017)... India , April 13, 2017 According to ... Proofing, Identity Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, ... MarketsandMarkets™, the IAM Market is expected to grow from USD 14.30 Billion ... Growth Rate (CAGR) of 17.3%. ... MarketsandMarkets ...
Breaking Biology News(10 mins):
(Date:8/16/2017)... ... 2017 , ... Tunnell Consulting announced today that four of the ... Meeting and Expo , to be held October 29 through November 1 in San ... to advance patient therapies.” , The ISPE Annual Meeting and Expo will feature several ...
(Date:8/16/2017)... ... August 16, 2017 , ... ... a different cell type. Many treatments for specific cancers, such as breast, prostate, ... targeted treatment is androgen deprivation therapy for advanced prostate cancer. , This ...
(Date:8/16/2017)... ... August 16, 2017 , ... Today, ... announced it has secured $2M in funding from an impressive group of investors, ... and SVG Thrive Fund. With this investment, 3Bar is broadening availability of its ...
(Date:8/16/2017)... edition of the Inc. 5000 features a now-familiar name: BioPoint ( http://biopointinc.com/ ... list for the third year in a row. Now in its 36th ... a set of quantitative metrics. In addition, BioPoint was also named to ... Bay State . ... ...
Breaking Biology Technology: