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Production of isomerized hop extracts

阅读：982发布：2021-01-22

专利汇可以提供Production of isomerized hop extracts专利检索，专利查询，专利分析的服务。并且To an aqueous alkali extract containing iso- Alpha -acids, prepared by subjecting hops to extraction of Alpha -acids therefrom and isomerization thereof in an aqueous alkali, an acid is added to adjust the pH value of the extract to a value of from 4.0 to 5.7 thereby to cause precipitation of coexisting impurity materials existing in dissolved state, whereas the iso- Alpha acids remaining in dissolved state, and the resulting precipitate is removed, whereupon an isomerized hop extract of high isoAlpha -acid utilization is produced without any harmful organic solvent.，下面是Production of isomerized hop extracts专利的具体信息内容。

权利要求

2. A process for producing isomerized hop extracts as set forth in claim 1 including a step of dissolving said precipitate once in an aqueous alkali of a concentration which is sufficient to cause the precipitate to dissolve and again adding an acid to adjust the pH value of the resulting solution to a pH value in the range of from 4.0 to 5.7 thereby to precipitate the contaminants while maintaining the iso- Alpha -acids in solution and recovering an aqueous solution which contains the iso- Alpha -acids dissolved therein and which is free of the precipitate.

3. A process for producing isomerized hop extracts as set forth in claim 1 in which said pH value is in the range of from 4.0 to the pH value of a malt beverage to which the isomerized hop extract thus produced is to be added.

4. A process for producing isomerized hop extracts as set forth in claim 2 in which said pH value is in the range of from 4.0 to the pH value of a malt beverage to which the isomerized hop extract thus produced is to be added.

5. A process for producing isomerized hop extracts as set forth in claim 2 in which said aqueous alkali solution of the iso-Alpha -acid obtained is used for said aqueous alkali in the process step of dissolving said Precipitate once in an aqueous alkali.

6. A process for producing isomerized hop extracts as set forth in claim 1 in which a supernatant resulting after removal of the precipitate of the contaminants from the aqueous alkali extract obtained is concentrated or dried under conditions that will effectively prevent decomposition of iso- Alpha -acids contained in the supernatant.

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