Natural and stable solutions of alpha-acids and their use for the improvement of foam quality of beer
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United States of America Patent
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Oct 24, 2017
Grant Date -
Nov 24, 2011
app pub date -
May 23, 2011
filing date -
May 24, 2010
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Abstract
This invention describes natural hop products that are stable solutions of alpha-acids, as well as their preparation and their use for post-fermentation addition to beer for the purpose of improving the foam quality, as measured by foam stability and foam cling. Improvements in the stability (both physical and chemical) of the alpha-acids are described by incorporation of iso-alpha-acids and tetrahydroiso-alpha-acids as well as various brewery-acceptable co-solvents. The alpha-acids also improve the physical stability of the reduced iso-alpha-acids, including tetrahydroiso-alpha-acids.
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