Featured Research

from universities, journals, and other organizations

Environmentally Friendly Beer Brewing: Repaired Gene Improves Commercial Lager Fermentation

Date:
April 22, 2009
Source:
American Society for Microbiology
Summary:
A recent study shows that beer fermentation conducted with genetically modified brewer's yeast may result in more efficient lager brewing and a lower environmental footprint.

A recent study shows that beer fermentation conducted with genetically modified brewer's yeast may result in more efficient lager brewing and a lower environmental footprint.

Related Articles


Researchers are from VTT Technical Research Center of Finland.

The use of more concentrated, high gravity and very high gravity (VHG) brewer's worts for the manufacture of beer has economic and environmental advantages. By using a special strain of brewer's yeast and adding more sugar, commercial brewers can create a beer with a higher alcohol percentage using the same amount of ingredients.

The resulting concentrated beer can be diluted with water to create a beer with the desired alcohol content. Current strains of brewer's yeasts, however, ferment VHG worts slowly and incompletely, leaving undesirable byproducts in the final beers.

Current research suggests that lager yeast strains possess a faulty gene that causes the brewing problems. Researchers repaired the lager yeast's genes by using DNA sequenced from an ale strain. The new yeast fermented VHG lager wort faster and more completely than unmodified strains, producing beers containing more ethanol and less unwanted byproducts.

"They [the transformed yeasts] fermented VHG wort faster and more completely, producing beers containing more ethanol and less residual maltose and maltotriose," say the researchers.


Story Source:

The above story is based on materials provided by American Society for Microbiology. Note: Materials may be edited for content and length.


Journal Reference:

  1. Vidgren et al. Improved Fermentation Performance of a Lager Yeast after Repair of Its AGT1 Maltose and Maltotriose Transporter Genes. Applied and Environmental Microbiology, 2009; 75 (8): 2333 DOI: 10.1128/AEM.01558-08

Cite This Page:

American Society for Microbiology. "Environmentally Friendly Beer Brewing: Repaired Gene Improves Commercial Lager Fermentation." ScienceDaily. ScienceDaily, 22 April 2009. <www.sciencedaily.com/releases/2009/04/090421101635.htm>.
American Society for Microbiology. (2009, April 22). Environmentally Friendly Beer Brewing: Repaired Gene Improves Commercial Lager Fermentation. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2009/04/090421101635.htm
American Society for Microbiology. "Environmentally Friendly Beer Brewing: Repaired Gene Improves Commercial Lager Fermentation." ScienceDaily. www.sciencedaily.com/releases/2009/04/090421101635.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) — The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Kids Die While Under Protective Services

Kids Die While Under Protective Services

AP (Dec. 18, 2014) — As part of a six-month investigation of child maltreatment deaths, the AP found that hundreds of deaths from horrific abuse and neglect could have been prevented. AP's Haven Daley reports. (Dec. 18) Video provided by AP
Powered by NewsLook.com
When You Lose Weight, This Is Where The Fat Goes

When You Lose Weight, This Is Where The Fat Goes

Newsy (Dec. 17, 2014) — Can fat disappear into thin air? New research finds that during weight loss, over 80 percent of a person's fat molecules escape through the lungs. Video provided by Newsy
Powered by NewsLook.com
The Hottest Food Trends for 2015

The Hottest Food Trends for 2015

Buzz60 (Dec. 17, 2014) — Urbanspoon predicts whicg food trends will dominate the culinary scene in 2015. Mara Montalbano (@maramontalbano) has the story. Video provided by Buzz60
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

 

Plants & Animals

Earth & Climate

Fossils & Ruins

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