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US 2010/0075015 A1Published application
Method for Preparing Alpha Acid-Enriched Hop Compositions
AssigneeBetal, LLC
InventorsMitsunori Ono, Naoto Yamaguchi
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Abstract
This invention relates to a method of preparing an alpha acid-enriched hop composition that contains a low level of beta acids.
Claims24
A method of preparing an alpha acid-enriched hop composition, comprising:
- dissolving in water a hop extract comprising alpha acids and beta acids to obtain a first aqueous solution, wherein the content of the alpha acids in the hop extract is about 50-85% by weight,
- adjusting the pH value of the first aqueous solution to 7-9 to precipitate the beta acids;
- and
- removing the precipitated beta acids to obtain an alpha acid-enriched hop composition, which, when in dry form, contains at least about 70-95% by weight alpha acids and about 0.05-0.5% by weight beta acids.
1 more element
A method of preparing an alpha-acid enriched hop composition, comprising:
- dissolving in water a hop extract comprising alpha and beta acids to obtain a first aqueous solution, wherein the content of the alpha acids in the hop extract is 50-85% by weight;
- adjusting the pH value of the first aqueous solution to 7-9 to allow precipitation of the beta acids;
- removing the precipitated beta acids to form a second aqueous solution;
- mixing the second aqueous solution with a sugar or a sugar alcohol to allow formation of precipitates,
- removing the precipitates to form an alpha-acid enriched hop composition, which, when in dry form, contains at least about 25-50% by weight alpha acids and about 0.02-0.2% by weight beta acids.
2 more elements
A method of preparing an alpha-acid enriched hop composition, comprising:
- dissolving in water a hop extract comprising alpha and beta acids to obtain a first aqueous solution, wherein the content of the alpha acids in the hop extract is 50-85% by weight,
- adjusting the pH value of the first aqueous solution to about 7-9 to allow precipitation of the beta acids,
- removing the precipitated beta acids to form a second aqueous solution,
- mixing the second aqueous solution with a water insoluble polymeric adsorbent,
- removing the water insoluble polymeric adsorbent to form an alpha acid-enriched hop composition, which, when in dry form, contains at least about 70-95% by weight alpha acids and about 0.05-0.5% by weight beta acids.
2 more elements
A method of preparing an alpha-acid enriched hop composition, comprising:
- Preheating a hop composition comprising about 80% by weight alpha acids and about 3% beta acids to 60-65° C. with water to form a solution;
- adjusting the pH of the solution to 8.0 to 8.4 and removing insoluble materials to obtain a first solution;
- contacting the first solution with a polymeric adsorbent and obtaining a second aqueous solution comprising about 16% alpha acids;
- Contacting the second aqueous solution with a modified starch to produce an alpha acid containing mixture comprising about 30% by weight of the modified starch and maltodextrin and adjusting pH to 8.4;
- Drying the alpha acid containing mixture to obtain a powder comprising about 30-33% by weight alpha acids, 2-3% isoalpha acids, and less than about 0.2% beta acids.
2 more elements
An alpha-acid enriched hop composition comprising at least about 30% alpha acids and less than about 0.5% beta acids.
Dependencies are inferred from the claim text.