Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1972-01-10
1977-01-11
Morgenstern, Norman
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07C 4500
Patent
active
040026833
ABSTRACT:
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.
REFERENCES:
patent: 3044879 (1962-07-01), Koch et al.
patent: 3418135 (1968-12-01), Bayne
patent: 3686316 (1972-08-01), Verzele
Hueschen Gordon W.
KALSEC, Inc.
Morgenstern Norman
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