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?
- Double Mastectomy: 'Angelina Effect' Has Been Long-lasting
- Hurricane Polo
- M60-UCD1: Tiny Galaxy, Supermassive Black Hole
- Mysterious 1808 Eruption - The Real Cause Of The Coldest Decade Of The Last 500 Years
- The Wealth Under Afghanistan
- 'Sleep Node' In The Brain Discovered
- Fracking Blamed For Too Many Hotel Rooms
- "According to Wikipedia:So that theory is no longer in town? I had imagined a great voice..."
- "You can find the slides on the indico page of the event: https://indico.cern.ch/event/328735/overview..."
- "Now, now, boys. I attempted to be politically neutral in this column. Even if I didn't totally..."
- "Aether has mass. Aether physically occupies three dimensional space. Aether is physically displaced..."
- "Really, since dark matter is not supposed to interact with normal matter, except gravitationally..."
- Monster galaxies gain weight by eating smaller neighbors
- The 'Angelina Effect' was not only immediate, but also long-lasting
- Experts issue plea for better research and education for advanced breast cancer
- Gun deaths twice as high among African-Americans as white citizens in US
- Cooling of dialysis fluids protects against brain damage