The yeast used to make beer has yielded what may be the first gene for beer foam, CFG1, scientists are reporting in a new study. The discovery opens the door to new possibilities for improving the frothy "head" so critical to the aroma and eye appeal of the world's favorite alcoholic beverage, beer. And it gives Science 2.0 another reason to write about beer.
Tomás G. Villa and colleagues explain that proteins from the barley and yeast used to make beer contribute to the quality of its foam (read more about beer foam and foam-stabilizing materials and terms like proteolysis here). The foamy head consists of bubbles containing carbon dioxide gas, which yeast produces during fermentation.
Proteins gather around the gas, forming the bubbles in the foam. Studies have shown that polypeptides, chains of amino acids, in beer - proteins - from the yeast stabilize the foam, preventing the head from disappearing too soon.
But until now, no one knew which yeast gene was responsible for making the foam-stabilizing protein.
The researchers identified the gene, which they call CFG1. The gene is similar to those already identified in wine and sake yeasts that also are involved in foaming. "Taken together all the results shown in the present paper make … CFG1 gene a good candidate to improve the foam character in the brewing industry," they say.
Published in Journal of Agricultural and Food Chemistry
- PHYSICAL SCIENCES
- EARTH SCIENCES
- LIFE SCIENCES
- SOCIAL SCIENCES
Subscribe to the newsletter
Stay in touch with the scientific world!
Know Science And Want To Write?
- Part I: Bee Deaths Mystery Solved? Neonicotinoids (Neonics) May Actually Help Bee Health
- Smoking, Drinking And Eating: It's Not About Your Freedom
- Chronic Pain Isn't All In The Brain
- Part II: Bee Deaths And CCD - Flawed Chensheng Lu Harvard Studies Endanger Bees
- Violence, Sex And Taboo: The Original Brothers Grimm Fairy Tales Back In Print
- Like Collaboration And Intelligence In Humans? Thank War
- Diversity Fatigue: Why Businesses Struggle To Close The Gender Gap
- "There is no question they were created to cater to universities and are staffed by people from..."
- "And my second link should be not a copy of the first, but this: http://www.nature.com/news/half..."
- "Recently I saw The Conversation remove/censor legitimate comments arguing against an article written..."
- tags because there's no testing..." href="/robert_inventor/why_we_cant_backup_earth_on_mars_the_moon_or_anywhere_else_in_our_solar_system-148364#comment-182183">"Robert, you might want to reformat my post. I intended to highlight only the headlines for easy..."
- "My only complaint with good thinkers and writers has hither always been that they should produce..."
- Behavioral interventions to prevent progression to diabetes equally effective in men and women
- Gender differences in adaptation to space flight
- Long-term complication rate low in nose job using patient's own rib cartilage
- Survival differences seen for advanced-stage laryngeal cancer
- Effect of once-daily, low-dose aspirin on heart attack deaths and other outcomes