专利汇可以提供Process for the extraction of hops专利检索,专利查询,专利分析的服务。并且Process for extracting from hops the essential brewing ingredients thereof, viz., neutral substances, bitter substances and tannin, which process comprises subjecting a primary extract solution of hops, e.g., in alcohol or hydrocarbon solvents, said solution containing as ingredients the neutral substances, bitter substances and tannin, to a first liquid-liquid extraction, wherein either (i) the tannins or (ii) the neutral substances are separated off, leaving a solution of (i) neutral and bitter substances or (ii) tannins and bitter substances, and subjecting the latter solution to a second liquid-liquid extraction to separate said solution into its components; the first extractant is desirably an aliphatic, cycloaliphatic or aromatic hydrocarbon when the primary extract solvent is an alcohol or aqueousalcoholic solution, to result in extraction of the neutral and bitter substances in a hydrocarbon phase and leaving of the tannin in the alcoholic phase, whereafter the neutral and bitter substances are separated from each other by treating the extract with a second extractant, desirably aliphatic alcohol containing water.,下面是Process for the extraction of hops专利的具体信息内容。
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