Featured Research

from universities, journals, and other organizations

Taking The Stress Off Yeast Produces Better Wine

Date:
September 9, 2009
Source:
Society for General Microbiology
Summary:
Turning grape juice into wine is a stressful business for yeasts. A researcher in Spain has identified the genes in yeast that enable it to respond to stress and is investigating ways to improve yeast performance by modifying its stress response mechanism.

Turning grape juice into wine is a stressful business for yeasts. Dr Agustin Aranda from the University of Valencia, Spain has identified the genes in yeast that enable it to respond to stress and is investigating ways to improve yeast performance by modifying its stress response mechanism.

Speaking at the Society for General Microbiology meeting at Heriot-Watt University, Edinburgh, Sept. 9, Dr Aranda described the stresses that wine yeasts undergo in the fermentation process. Industrial wine making involves adding dried yeast starter cultures to the juice; both the drying and reactivating processes cause stress damage to the yeast cells. As the juice is fermented into wine the rising ethanol (alcohol) levels also damage the yeast cells and oxidation causes further damage.

By manipulating the genes that control the stress response of the yeast, the researchers found that they could improve its performance in industrial fermentation processes. They found that a family of enzymes called sirtuins had an important role in controlling wine yeast lifespan.

"Our research aimed to improve winemaking techniques but our findings on oxidative stress and ageing in yeast could be potentially useful in understanding the positive roles of antioxidants present in grapes and grape juice," said Dr Aranda.


Story Source:

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


Cite This Page:

Society for General Microbiology. "Taking The Stress Off Yeast Produces Better Wine." ScienceDaily. ScienceDaily, 9 September 2009. <www.sciencedaily.com/releases/2009/09/090908203429.htm>.
Society for General Microbiology. (2009, September 9). Taking The Stress Off Yeast Produces Better Wine. ScienceDaily. Retrieved September 22, 2014 from www.sciencedaily.com/releases/2009/09/090908203429.htm
Society for General Microbiology. "Taking The Stress Off Yeast Produces Better Wine." ScienceDaily. www.sciencedaily.com/releases/2009/09/090908203429.htm (accessed September 22, 2014).

Share This



More Plants & Animals News

Monday, September 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Cat Lovers Flock to Los Angeles

Cat Lovers Flock to Los Angeles

AFP (Sep. 22, 2014) The best funny internet cat videos are honoured at LA's Feline Film Festival. Duration: 00:56 Video provided by AFP
Powered by NewsLook.com
Washed-Up 'Alien Hairballs' Are Actually Algae

Washed-Up 'Alien Hairballs' Are Actually Algae

Newsy (Sep. 22, 2014) Green balls of algae washed up on Sydney, Australia's Dee Why Beach. Video provided by Newsy
Powered by NewsLook.com
Raw: San Diego Zoo Welcomes Cheetah Cubs

Raw: San Diego Zoo Welcomes Cheetah Cubs

AP (Sep. 20, 2014) The San Diego Zoo has welcomed two Cheetah cubs to its Safari Park. The nearly three-week-old female cubs are being hand fed and are receiving around the clock care. (Sept. 20) Video provided by AP
Powered by NewsLook.com
Chocolate Museum Opens in Brussels

Chocolate Museum Opens in Brussels

AFP (Sep. 19, 2014) Considered a "national heritage" in Belgium, chocolate now has a new museum in Brussels. In a former chocolate factory, visitors to the permanent exhibition spaces, workshops and tastings can discover derivatives of the cocoa bean. Duration: 01:00 Video provided by AFP
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:
from the past week

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