Featured Research

from universities, journals, and other organizations

Beating the fuel prices: Using yeast for economic production of bioethanol

Date:
July 18, 2012
Source:
BioMed Central Limited
Summary:
Finding renewable and economic sources of energy are one of the most important concerns for the continuation of the human species. New research has produced a novel strain of yeast with improved xylose tolerance and metabolism, and consequently improved ethanol production.

Finding renewable and economic sources of energy are one of the most important concerns for the continuation of the human species. New research, published in BioMed Central's open access journal Biotechnology for Biofuels, has produced a novel strain of yeast with improved xylose tolerance and metabolism, and consequently improved ethanol production.

Related Articles


Bioethanol is considered one of cleanest renewable replacements for fossil fuel. However using glucose from crops, such as sugar cane or starch crops, uses up resources which could otherwise be used to produce food. Xylose is the second most abundant sugar in plants (after glucose) and is plentiful in agricultural and wood waste. However the yeast which are most efficient at producing ethanol cannot ferment pentose sugars, such as xylose, and yeast which can ferment xylose are not very good at producing ethanol.

Researchers from Ngee Ann Polytechnic, Singapore, used the process of gene shuffling to integrate the genomes of xylose tolerant P. Stipitis and the glucose loving, ethanol tolerant (but xylose intolerant) S. Cerevisiae. In the first round of shuffling the P. Stipitis genome was transferred into S. Cerevisiae. Recombinant strains were selected for their ability to grow on xylose and then for their ability to produce ethanol. In a second round of gene shuffling the S. Cerevisiae genome was transferred into the best of these strains and the resulting strains tested for ethanol tolerance.

Anli Geng who led this study explained, "We produced a hybrid yeast, capable of producing bioethanol from xylose, which was also able to survive in high concentrations of ethanol. The main by-product of xylose fermentation was xylitol and by measuring this, along with ethanol production, we found that our hybrid was more efficient at using xylose and in producing ethanol than either of the parent strains. This yeast is only a prototype and further improvement is possible before scale up. However our results show that there is a future in recycling waste vegetation into bioethanol."


Story Source:

The above story is based on materials provided by BioMed Central Limited. Note: Materials may be edited for content and length.


Journal Reference:

  1. Wei Zhang, Anli Geng. Improved ethanol production by a xylose-fermenting recombinant yeast strain constructed through a modified genome shuffling method. Biotechnology for Biofuels, 2012; 5 (1): 46 DOI: 10.1186/1754-6834-5-46

Cite This Page:

BioMed Central Limited. "Beating the fuel prices: Using yeast for economic production of bioethanol." ScienceDaily. ScienceDaily, 18 July 2012. <www.sciencedaily.com/releases/2012/07/120718073814.htm>.
BioMed Central Limited. (2012, July 18). Beating the fuel prices: Using yeast for economic production of bioethanol. ScienceDaily. Retrieved November 22, 2014 from www.sciencedaily.com/releases/2012/07/120718073814.htm
BioMed Central Limited. "Beating the fuel prices: Using yeast for economic production of bioethanol." ScienceDaily. www.sciencedaily.com/releases/2012/07/120718073814.htm (accessed November 22, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Saturday, November 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

AFP (Nov. 21, 2014) Toyota presented its hydrogen fuel-cell compact car called "Mirai" to US consumers at the Los Angeles auto show. The car should go on sale in 2015 for around $60.000. It combines stored hydrogen with oxygen to generate its own power. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com
Google Announces Improvements To Balloon-Borne Wi-Fi Project

Google Announces Improvements To Balloon-Borne Wi-Fi Project

Newsy (Nov. 21, 2014) In a blog post, Google said its balloons have traveled 3 million kilometers since the start of Project Loon. Video provided by Newsy
Powered by NewsLook.com
NSA Director: China Can Damage US Power Grid

NSA Director: China Can Damage US Power Grid

AP (Nov. 20, 2014) China and "one or two" other countries are capable of mounting cyberattacks that would shut down the electric grid and other critical systems in parts of the United States, according to Adm. Michael Rogers, director of the National Security Agency and hea Video provided by AP
Powered by NewsLook.com
Latest Minivan Crash Tests Aren't Pretty

Latest Minivan Crash Tests Aren't Pretty

Newsy (Nov. 20, 2014) Five minivans were put to the test in head-on crash simulations by the Insurance Institute for Highway Safety. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins