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    • 7. 发明授权
    • Hop extracts and method of preparation
    • Hop提取物及其制备方法
    • US4324810A
    • 1982-04-13
    • US154577
    • 1980-05-29
    • Henry GoldsteinWalter FlyPatrick TingEtzer Chicoye
    • Henry GoldsteinWalter FlyPatrick TingEtzer Chicoye
    • C12C3/00C12C3/08C12C3/12C12C9/02
    • C12C3/12C12C3/00C12C3/08
    • Hop extracts useful in the preparation of anactinic or light stable malt beverages are obtained by a method which does not use organic solvents. The extracts are obtained by first treating a crude hop extract containing humulone with an aqueous reducing solution, heating the resulting mixture to form reduced isohumulone, acidifying the reaction mixture to form an aqueous phase and an organic phase, and then adjusting the temperature to facilitate the separation of the two phases. The organic phase which is obtained contains the desired isomerized and reduced humulone and it can be used per se as an anactinic brew kettle flavoring additive for beer or ale. In a preferred embodiment, the organic phase is further treated with an amount of an aqueous KOH solution sufficient to neutralize the reduced isohumulone and to form both an aqueous phase and a solid phase. The aqueous phase which contains reduced isohumulone of about 90+% purity can be used as an anactinic post-kettle additive and the solid phase which contains the remainder of the reduced isohumulone and other hop constituents can be used as an anactinic brew kettle additive.
    • 通过不使用有机溶剂的方法获得用于制备不稳定或不稳定的麦芽饮料的Hop提取物。 通过首先用还原水溶液处理含有葎草酮的粗啤酒花提取物,加热所得混合物以形成还原异葎草酮,酸化反应混合物以形成水相和有机相,然后调节温度以促进 分离两相。 获得的有机相包含所需的异构化和还原的葎草酮,并且其本身可以用作啤酒或啤酒的不确定性酿造壶调味添加剂。 在优选的实施方案中,有机相进一步用一定量的KOH水溶液进行处理,该溶液足以中和还原异葎草酮并形成水相和固相。 含有约90 +%纯度的还原异葎草酮的水相可以用作不活泼的后釜添加剂,并且含有剩余的还原异葎草酮和其它啤酒花组分的固相可以用作非活性酿造壶添加剂。