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    Methods for making tetrahydroisoalpha and hexahydroisoalpha acids
    1.
    发明公开
    Methods for making tetrahydroisoalpha and hexahydroisoalpha acids 失效
    Verfahren zur Herstellung von Tetrahydroisoalpha-和Hexahydroisoalphasäuren。

    公开(公告)号：EP0442621A1

    公开(公告)日：1991-08-21

    申请号：EP91300480.0

    申请日：1991-01-22

    申请人： PFIZER INC.

    发明人： Hay, Bruce Allan

    IPC分类号： C12C3/12

    CPC分类号： C12C5/026 ,  C12C3/10 ,  C12C3/12 ,  C12C9/025

    摘要： A method of converting alpha acids to hop flavors by exposing the alpha acids to an environment capable of substantially simultaneously isomerizing and reducing the alpha acids to form either THIAA or HHIAA. Another aspect of this invention is directed to a method of reducing hop flavors by exposing an isoalpha acid, a dihydroisoalpha acid or a mixture thereof to conditions suitable to reduce said acids to produce THIAA, HHIAA or a mixture thereof at a pH of about 5 to about 12 in a reaction inert, protic solvent. Yet another aspect of this invention is directed to a method of reducing hop flavors comprising exposing an isoalpha acid, a dihydroisoalpha acid or a mixture thereof to conditions suitable to reduce said acids to produce THIAA, HHIAA or a mixture thereof in a reaction inert, aprotic solvent.

    摘要翻译： 通过将α酸暴露于能够基本上同时异构化并还原α酸以形成THIAA或HHIAA的环境，将α-酸转变成啤酒香精的方法。 本发明的另一方面涉及通过将异α酸，二氢异山梨酸或其混合物暴露于适于减少所述酸以产生THIAA，HHIAA或其混合物的pH至约5至 约12个反应惰性质子溶剂。 本发明的另一方面涉及一种减少啤酒花味的方法，其包括将异α酸，二氢异山梨酸或其混合物暴露于适于在惰性，非质子的反应中还原所述酸以产生THIAA，HHIAA或其混合物的条件 溶剂。