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:11/16/2016)... Sensory Inc ., a Silicon ... consumer electronics, and VeriTran , a technology ... today announced a global partnership that will provide ... users of mobile banking and mobile payments solutions.  ... which requires no specialized biometric scanners, yet provides ...
(Date:11/14/2016)... SANTA CLARA, Calif. , Nov. 14, ... of the biometric identification market, Frost & ... Global Frost & Sullivan Award for Visionary ... leading player in the biometric identification market ... a multi-modal verification solution for instant, seamless, ...
(Date:6/22/2016)... 2016 On Monday, the Department of Homeland ... share solutions for the Biometric Exit Program. The Request ... Protection (CBP), explains that CBP intends to add biometrics ... the United States , in order to deter ... Logo - http://photos.prnewswire.com/prnh/20160622/382209LOGO ...
Breaking Biology News(10 mins):
(Date:12/8/2016)... ... December 08, 2016 , ... The ability to ... — is key to exciting advances in the study and mapping of the ... via free-space optics stimulates small, transparent organisms and excites neurons within superficial layers ...
(Date:12/8/2016)...  Anaconda BioMed S.L., a pre-clinical stage medical device ... neuro-thrombectomy system for the treatment of Acute Ischemic Stroke ... to join its Scientific Advisory Board (SAB). The SAB ... scientific and clinical experts to Anaconda BioMed S.L., as ... ® to its clinical phase. The SAB is ...
(Date:12/8/2016)... ... 2016 , ... This CAST literature review and report looks at problems caused ... the economic effects in countries that are major global commodity exporters and importers, which ... risk of low level presence (LLP) puts large volumes of trade worth billions of ...
(Date:12/8/2016)... HOWELL, N.J. , Dec. 8, 2016 /PRNewswire/ ... aquatic augmentation remediation technologies and selected NewTechBio,s NT-MAX ... , a microbial based beneficial bacteria, in conjunction ... Inc., to correct deficiencies with National Pollutant Discharge ... basin 281-8H has experienced a steady history of ...
Breaking Biology Technology: