Premium
ION‐EXCHANGE CHROMATOGRAPHY OF HOP RESINS AND ITS APPLICATION TO THE PREPARATION OF EXTRACTS FOR BITTERING BEER
Author(s) -
Howard G. A.,
Slater C. A.
Publication year - 1960
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1960.tb01717.x
Subject(s) - chemistry , xanthohumol , hop (telecommunications) , ion exchange resin , acetic acid , aqueous solution , brewing , elution , ion exchange , humulus lupulus , alkali metal , ion chromatography , organic chemistry , synthetic resin , chromatography , ion , computer network , food science , pepper , computer science , fermentation
Substantial quantities of the acidic components of hop resins are adsorbed from solution in organic solvents by basic ion‐exchange resins from which they may be eluted in various groups, including the α and β acids, by means of aqueous methanolic acetic acid. Similar chromatography of the hard resin of hops reveals xanthohumol together with other flavone derivatives. Alternatively, the hop acids may be desorbed from basic ion‐exchange resins by aqueous methanolic sodium chloride. The mixture of compounds thus obtained has been converted by treatment with alkali into a preparation of iso‐compounds which has been used successfully to bitter unhopped beer with excellent over‐all utilization of the hop resins. *