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BICYCLIC ISOMERISATION PRODUCTS OF HUMULONE AND COHUMULONE IN BEER
Author(s) -
Verzele M.,
Velde N. Van de
Publication year - 1987
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.2050-0416.1987.tb04497.x
Subject(s) - bicyclic molecule , isomerization , chemistry , stereochemistry , medicinal chemistry , organic chemistry , catalysis
Separation of five‐ and six‐membered ring hop acids can be obtained selectively by High Performance Liquid Chromatography (HPLC) on anthracene‐bonded silica gel. Photo‐diode array detection combined with high resolution HPLC of the six‐membered compounds of beer reveals the presence of I and II in Fig. 1. These compounds are formed by reaction of the respective α‐acids, humulone (III) and cohumulone (IV), in brewing conditions. 1,2 Their concentration in beer is a few μgl −1 .