Navigation Links
After the yeast is gone bacteria continue to develop flavor of sparkling wine

Researchers at the University of Barcelona, Spain, show for the first time that bacteria, in addition to yeast, are involved in the secondary fermentation of the sparkling wine known as Cava. They report their findings today at the 105th General Meeting of the American Society for Microbiology.

"Bacteria found in Cava samples could have a distinctive impact upon sparkling wine quality in terms of aroma, flavor, bubble size and bubble persistence, especially for premium quality wines," says Núria Rius, a researcher on the study.

The traditional Champenoise method of sparkling wine production requires addition of sucrose and yeast strains to the base wine for a second fermentation in the bottle in which the wine is sold. The secondary fermentation produces carbon dioxide which dissolves in the wine and is perceived as bubbles when the bottle is opened, hence the term "sparkling". After the fermentation is completed the Cava wine is aged in the bottles with the yeast for at least nine months, or longer for premium quality wines. During aging, substantial chemical changes take place due to cell lysis which contributes to the sensory characteristics of Cava.

The researchers isolated 617 microbial strains from two Cavas, after 9 to 17 months of bottling. No yeasts were isolated after 10 months of bottling. Gram-negative and Gram-positive bacteria were isolated from both wines. Different phases of the aging process are dominated by different bacteria. Gram-negative bacteria were quickly replaced by Gram-positive bacteria, and after 17 months only Gram-positive bacteria were detected in both sparkling wines.

"The products released by the yeast cells affect wine flavor and serve as nutrients for the growth of bacteria. Although yeasts have the dominating influence on the chemical composition of wine, some changes which influence the sensory quality and consumer acceptability of the wine could be due to growth and lysis of bacteria," says Rius.<
'"/>

Source:American Society for Microbiology


Page: 1 2

Related biology news :

1. Bone Density Recovers After Teens Stop Injected Contraceptive
2. Youth With HIV Take More Risks After New Meds Introduced
3. After a time-shift, mixed signals from the circadian clock
4. Drug Offers Alternative to Surgical Treatment After Miscarriage
5. Menopause Symptoms May Come Back After Stopping Menopausal Hormone Therapy
6. Researchers Find Drug May Give Some Cardiac Protection 24 Hours After Heart Attack
7. Examination of internal wiring of yeast, worm, and fly reveals conserved circuits
8. Navigating an integrated yeast network
9. GlycoFi announces the first production of antibodies with human glycosylation in yeast
10. From a lowly yeast, researchers divine a clue to human disease
11. GlycoFi and Dartmouth report full humanization of yeast glycosylation pathway in Science
Post Your Comments:
(Date:10/16/2014)... infections and worldwide claims the lives of 160,000 ... University have succeeded in developing a promising vaccination ... , Xavier Saelens (VIB/UGent): "We discovered a new ... development of a novel approach to vaccination against ... small children and elderly people." , RSV: ...
(Date:10/15/2014)... the pandemic risk from strains of influenza virus increases ... ourselves to become complacent that the most substantial threats ... , Influenza pandemics arise when a new virus strain ... immunity – spreads in the human population. There have ... the worst of which – the 1918 Spanish Flu ...
(Date:10/15/2014)... bacterial pneumonia in female mice to an enzyme activated ... naturally more resistant to respiratory infections than males. Now, ... resistance to bacterial pneumonia in female mice is linked ... also show that this enzyme is ultimately activated by ... The team, lead by Professor Lester Kobzik at the ...
Breaking Biology News(10 mins):New perspectives for development of an RSV vaccine 2Scientists 'must not become complacent' when assessing pandemic threat from flu viruses 2
... method to identify DNA mutations may shepherd in an ... screening and identification of genes that harbor disease. , ... Biosensors at the Biodesign Institute at ASU, led a ... of biosensors, electronics, and nanotechnology to fashion nanocrystals that ...
... provide for study of human immune responses, scientists have ... rapid immune response by two separate armies of defensive ... microbes like the leprosy bug, this initial defense sometimes ... yields to a dangerous, spreading infection. , Led by ...
... University of North Carolina at Chapel Hill is one ... the National Institutes of Health to study why good ... the next seven years, the Drug-Induced Liver Injury Network, ... liver injury caused by prescription and over-the-counter medications, nutritional ...
Cached Biology News:Bioelectronic ‘signatures?hold key to DNA mutations 2Leprosy microbes lead scientists to immune discovery 2UNC launches study of liver injury caused by drugs 2
(Date:10/20/2014)... 2014 Local veterinary surgeon, Dr. Tim ... study of donor stem cells for dogs with osteoarthritis. ... and has performed clinical stem cell therapy for 7 ... determine if a single injection of donor stem cells ... reduce pain and inflammation in the treated joints. ...
(Date:10/19/2014)... 20, 2014 OCTOBER 20-22, ... (ABIM). ABIM will take place at ... about ABIM 2014 is now available at ... representing companies and organizations from all over ... information on the latest products and developments ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 The ... bromine market in Asia-Pacific with analysis and forecast ... the Asia Pacific Bromine Market report, to get ... also provides a glimpse of the segmentation in ... various tables and figures. , http://www.micromarketmonitor.com/market/asia-pacific-bromine-6741503144.html ...
(Date:10/19/2014)... The Asia-Pacific Speech Analytics market report defines and segments ... forecast of revenue. This market is estimated to grow ... 2019, at a Compound Annual Growth Rate (CAGR) of ... TOC of the Asia-Pacific Speech Analytics market report to ... also provides a glimpse of the segmentation in the ...
Breaking Biology Technology:Cascade Veterinary Referral Center Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific Bromine Market is estimated to grow to $4,080.1 million by 2018 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4
... CHAPEL HILL, N.C., Aug. 22 Quality and ... year in light of,demands for higher efficiencies fueled ... issues on multiple fronts --,smaller pipelines are affecting ... increasing and harsher FDA regulations brought more scrutiny ...
... non-profit, faith-based and community organizations to ... proactively get the job done, ... agreement with a non-profit organization to utilize its,Ogiene(TM) FE technology to ... safely used by those families so desperately in need,of biohazard-free housing., ...
... Cellular Platform Utilizing Cord, Blood and Menstrual Blood Derived Stem ... ... Vascular Structures, OLDSMAR, Fla., Aug. 21 Cryo-Cell,International, ... research collaboration to co-develop a combined cellular,platform therapeutic for rapidly ...
Cached Biology Technology:Leading Biopharmas Will Deliver Case Studies on Achieving Productivity Excellence through Engagement, Technology, Other Tools 2BioNeutral Signs Agreement With a Non-profit for Long-Term Removal of Formaldehyde to Save 10,000 Mobile Homes in Louisiana 2Cryo-Cell International and EndGenitor Technologies Announce Research Collaboration 2Cryo-Cell International and EndGenitor Technologies Announce Research Collaboration 3Cryo-Cell International and EndGenitor Technologies Announce Research Collaboration 4
... Sheep polyclonal to Decorin ( Abpromise ... Antigen: Synthetic peptide: ... amino acids 6-19 of Human Decorin ... bone proteoglycan II). ...
...
... NEW VSOS-4P, all Programmable and Digital Orbital Shaker. ... been redesigned to make every day use even ... memory for up to 4 different programs. Its ... your program. Furthermore, the VSOS-4P has a pulse ...
... plus,for Reliable Sterile Filtration of Tissue Culture ... pump or tube pump, quickly and,reliably sterilize ... aqueous solutions. The combination of a ... de-aeration,ensures high flow rates and optimal total,throughputs. ...
Biology Products: