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Keeping Beer Fresher

Date:
June 7, 2008
Source:
American Chemical Society
Summary:
Scientists in Venezuela are reporting an advance in the centuries-old effort to preserve the fresh taste that beer drinkers value more than any other characteristic of that popular beverage. Their study identifies key substances involved in giving beer an aged or "oxidized" flavor.

Researchers have identified alpha-carbonyls as important compounds that reduce beer's flavor.
Credit: iStockphoto

Scientists in Venezuela are reporting an advance in the centuries-old effort to preserve the fresh taste that beer drinkers value more than any other characteristic of that popular beverage.

Their study identifies key substances involved in giving beer an aged or "oxidized" flavor.

In the new study, Adriana Bravo and colleagues point out that past efforts to keep beer fresh have focused on protecting beer from contact with the air throughout the brewing process. That focus, however, has resulted in only a relatively small improvement in flavor stability.

The research identified a group of poorly understood substances called alpha-carbonyls as important culprits in the decline in fresh flavor that occurs as beer ages. It also showed that levels of some of these substances could be reduced by adding ingredients that block their formation, thus making beer taste fresher longer.


Story Source:

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


Journal Reference:

  1. Adriana Bravo et al. Formation of alpha-Dicarbonyl Compounds in Beer during Storage of Pilsner. Journal of Agricultural and Food Chemistry, May 28, 2008 [link]

Cite This Page:

American Chemical Society. "Keeping Beer Fresher." ScienceDaily. ScienceDaily, 7 June 2008. <www.sciencedaily.com/releases/2008/06/080602091414.htm>.
American Chemical Society. (2008, June 7). Keeping Beer Fresher. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2008/06/080602091414.htm
American Chemical Society. "Keeping Beer Fresher." ScienceDaily. www.sciencedaily.com/releases/2008/06/080602091414.htm (accessed July 31, 2014).

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