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Heady discovery for beer fans: The first gene for beer foam could improve froth

Date:
October 31, 2012
Source:
American Chemical Society
Summary:
The yeast used to make beer has yielded what may be the first gene for beer foam, 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, they say.
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The yeast used to make beer has yielded what may be the first gene for beer foam.
Credit: © Lsantilli / Fotolia

The yeast used to make beer has yielded what may be the first gene for beer foam, scientists are reporting in a new study. Published in ACS' Journal of Agricultural and Food Chemistry, 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, they say.

Tomás G. Villa and colleagues explain that proteins from the barley and yeast used to make beer contribute to the quality of its foam. 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 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.


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The above post is reprinted from materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Journal Reference:

  1. Lucía Blasco, Patricia Veiga-Crespo, Angeles Sánchez-Pérez, Tomás G. Villa. Cloning and Characterization of the Beer Foaming GeneCFG1from Saccharomyces pastorianus. Journal of Agricultural and Food Chemistry, 2012; 60 (43): 10796 DOI: 10.1021/jf3027974

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American Chemical Society. "Heady discovery for beer fans: The first gene for beer foam could improve froth." ScienceDaily. ScienceDaily, 31 October 2012. <www.sciencedaily.com/releases/2012/10/121031125041.htm>.
American Chemical Society. (2012, October 31). Heady discovery for beer fans: The first gene for beer foam could improve froth. ScienceDaily. Retrieved August 31, 2015 from www.sciencedaily.com/releases/2012/10/121031125041.htm
American Chemical Society. "Heady discovery for beer fans: The first gene for beer foam could improve froth." ScienceDaily. www.sciencedaily.com/releases/2012/10/121031125041.htm (accessed August 31, 2015).

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