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82 条记录 (耗时 0.014 秒)

    Process for isomerizing alpha acids to iso-alpha acids
    5.
    发明授权
    Process for isomerizing alpha acids to iso-alpha acids 失效
    将α-酸异构化成异α酸的方法

    公开(公告)号：US4002683A

    公开(公告)日：1977-01-11

    申请号：US216757

    申请日：1972-01-10

    申请人： Paul H. Todd, Jr.

    发明人： Paul H. Todd, Jr.

    IPC分类号： C07B20060101 ,  C07C45/00 ,  C07C49/743 ,  C07C63/00 ,  C12C3/12

    CPC分类号： C12C3/12 ,  C12C3/08

    摘要： The present invention provides a process for transforming an alpha acid into an iso-alpha acid, involving contact of the alpha acid with an aqueous solution of a metal ion, comprising the steps of contacting an aqueous solution of the metal ion with a water-immiscible organic solvent solution of the alpha acid under conditions whereunder the alpha acid is dissolved or remains dissolved in said organic solvent and effecting the desired isomerization in the water-immiscible organic solvent, with or without prior separation of said solvent containing said alpha acid from the aqueous phase.Numerous advantages accrue to the employment of this process over prior-art procedures. Humulones are readily isomerized to isohumulones, and hop extracts are readily isomerized to "preisomerized" hop extracts. The products have utility as flavoring additives.

    摘要翻译： 本发明提供了一种将α酸转化成异α酸的方法，包括使α酸与金属离子的水溶液接触，包括使金属离子的水溶液与水不混溶的步骤 在α酸溶解或保持溶解在所述有机溶剂中并在水不混溶的有机溶剂中进行所需的异构化的条件下，在或不将所述含有所述α酸的溶剂从水溶液中预先分离的条件下，将α-酸的有机溶剂溶液 相。

    Preparation of hot extracts and use in beer making operation
    8.
    发明授权
    Preparation of hot extracts and use in beer making operation 失效
    热提取物的制备和在啤酒中的使用操作

    公开(公告)号：US3798332A

    公开(公告)日：1974-03-19

    申请号：US3798332D

    申请日：1972-01-10

    申请人： MILLER BREWING

    发明人： WESTERMANN D ,  CHICOYE E ,  HOFFMANN D

    IPC分类号： C07C49/743 ,  C12C3/12 ,  C12C9/02

    CPC分类号： C12C3/12 ,  C12C3/08 ,  C12C7/205 ,  C12C7/287 ,  C12C11/11

    摘要： HOP EXTRACT IN, E.G., HEXANE, PREISOMERIZED, OPTIONALLY PREREDUCED, IS EXTRACTED WITH AQUEOUS KOH TO GIVE POTASSIUM ISOHUMULATE OF 80& + AND PREFERABLY 90%+ PURITY. ISOHUMULONES IS STRIPPED OF SOLVENT AND IS SUITABLE FOR KETTLE ADDITION. IN ORDER TO PREVENT FOAMING DURING SUBSEQUENT CONCENTRATION, THE AQUEOUS EXTRACT CONTAINING ABOUT 6% SOLIDS IS ACIDIFIED TO A PH LESS THAN THE PKA OF ISOHUMULONE AND IS CONCENTRATED UNDER REDUCED PRESSURE. AFTER CONCENTRATION, THE MATERIAL IS TREATED WITH KOH TO FORM THE WATER SOLUBLE ISHOUMULONE SALT WHICH IS ADDED TO BEER POSTKETTLE. AT A CRITICAL OPTINIUM PH RANGE, DEPENDENT UPON THE RATIO OF WATER TO HEXANE PHASE USED IN THE INITIAL EXTRACTION, FROM 0.1 TO 0.75 OF THE ISOHUMULONES MAY BE EXTRACTED IN THE HIGHLY PURIFIED FORM. A GENERALIZED TECHNIQUE FOR ESTABLISHING CONDITIONS THAT WILL GIVE SUCH A DESIRED FRACTIONS AND RESIDUES IS DISCLOSED.

    Production of isomerized hop extracts
    9.
    发明授权
    Production of isomerized hop extracts 失效
    异构HOP提取物的生产

    公开(公告)号：US3751266A

    公开(公告)日：1973-08-07

    申请号：US3751266D

    申请日：1970-07-22

    申请人： KIRIN BREWERY ,  KIRIN BREWERY

    发明人： KUROIWA Y ,  UEHARA H ,  KOKUBO E ,  ARAMAKI K

    IPC分类号： C12C7/00 ,  C12C3/12 ,  C12C9/02

    CPC分类号： C12C3/12

    摘要： 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.

    摘要翻译： 向含有异α-酸的含水碱性提取物中，通过使啤酒花从其中提取α-酸及其在碱性水溶液中异构化制备，加入酸以将提取物的pH值调节至4.0至 5.7，从而使存在于溶解状态的共存杂质沉淀，而异α-酸保持溶解状态，并将所得沉淀物除去，由此产生具有高异α-酸 - 酸的异构化啤酒花提取物，无任何 有害有机溶剂。