Process for the extraction of bitter substances from a hop...

Details Process for the extraction of bitter substances from a hop... Process for the extraction of bitter substances from a hop...

C - Chemistry, Metallurgy

12

C

195/15

C12C 3/00 (2006.01) C07C 45/00 (2006.01)

Patent

CA 1061729

ABSTRACT OF THE DISCLOSURE The present invention provides a method of processing hops to obtain bitter substances, comprising subjecting a pur- ified hop extract to direct isomerisation of the alpha acids using the ethoxide of an alkaline earth metal in suspension in anhydrous ethanol, separating the iso-alpha and beta acids using a pulsating column, isolating the resultant iso-alpha acids, transforming the beta acids into alpha acids, and then treating the solution by isomerisation to finally obtain iso- alpha acids or the salts thereof.

249488

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