EVALUATION OF HOPS: NEW APPROACH TO THE DETAILED ANALYSIS OF HOP RESINS

Abstract
Gas-liquid partition chromatography of the mixture of fatty acids obtained by oxidizing the α-soft resin of hops constitutes a rapid and accurate method for the determination of the cohumulone, humulone and adhumulone contents of the resin. The proportions of the corresponding colupulone, lupulone and adlupulone in the “β-acids” may be determined similarly or, alternatively, by the use of liquid-liquid partition chromatography.