Results 11 to 20 of about 713,742 (183)
Breeding of flavour hops in the Czech Republic [PDF]
Kvasný průmysl, 2020 Hop breeding in the Czech Republic develops a number of flavour hops. The Kazbek hop variety was registered in 2008 and the Mimosa variety in 2019. The best 7 hop genotypes were selected from breeding materials between the years 2014 and 2019.
Vladimír Nesvadba +2 more
doaj +2 more sources
Hop resins and Czech hops essential oils composition. [PDF]
Kvasny Prumysl, 1995 Metodou vysokoucinne kapalinove chromatografie, plynove chromatografie a važkových stanoveni byly zkoumany u vsech povolených odrůd ceskeho chmele kvantitativni a kvalitativni analyticke znaky (poměr a-hořkých kyselin / b-frakce, relativni podily kohumulonu a kolupulonu u jednotlivých hořkých kyselin, celkový obsah chmelove silice a jeji složen, ktere ...
F. Kroupa
semanticscholar +2 more sources
HOP RESINS AND BEER FLAVOUR IV. OBSERVATIONS CONCERNING HARD RESIN [PDF]
Journal of the Institute of Brewing, 1965 Various autoxidation products of hop resins are described and compared with hard resin fractions. Changes in the resin contents of stored hops and the potential importance of certain hard resin components in the analysis of hops and beer are discussed.
P. Ashurst, A. L. Whitear
semanticscholar +2 more sources
Green Antimicrobials: Innovative Applications of Hops Extracts as Biocontrol Agents [PDF]
PathogensNatural compounds represent a fundamental source of antimicrobial agents with applications in numerous industries. This study investigates the antimicrobial properties of different fractions of extracts obtained from six hop varieties, as well as of ...
Ana I. Paniagua-García +2 more
doaj +2 more sources
THE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY OF HOP RESINS [PDF]
Journal of the Institute of Brewing, 1978 Hop resins are eluted from a specially developed weak anion exchange bonded phase silica using citric acid, methanol, water, mixtures as eluent. Fresh and deteriorated hops and isomerized extracts have been examined. The ratio of the humulone congeners in different hop varieties and the conversion of α-acid to iso-α-acid during the hop boil have been ...
G. Otter, L. Taylor
semanticscholar +2 more sources
FURTHER STUDIES ON THE OXIDATION OF HOP RESINS [PDF]
Journal of the Institute of Brewing, 1966 The autoxidation of humulone, isohumulone, colupulone and cohulupone has been studied using chromatography on an ion-exchange resin. Humulone gave a mixture of products which were largely insoluble in light petroleum whereas most of the products obtained by autoxidation of colupulone were soluble in that solvent.
P. Ashurst, D. Laws, M. A. Pinnegar
semanticscholar +2 more sources
FRACTIONATION OF THE β FRACTION OF HOP RESINS [PDF]
Journal of the Institute of Brewing, 1961 Products of oxidation of lupulones and humulones have been fractionated by the chromatostrip method and by column chromatography; lupulones are not readily transformed to hexane-insoluble material, but fractions corresponding to δ resin have been obtained from humulones.
Y. Kuroiwa, Hiroshi Hashimoto
semanticscholar +2 more sources
Fermentation, 2021 The aim of the study was to assess the yield of cones and the quality of six hop varieties (“Iunga”, “Lubelski”, “Sybilla”, “Magnum”, “Lomik”, “Marynka”) in terms of their suitability for beer production, under the conditions of the Małopolska Vistula ...
Barbara Sawicka +6 more
doaj +2 more sources
Mapping Metabolomic Relationships of Hop Cultivars in an Ancestral Lineage Context. [PDF]
ACS OmegaHops (Humulus lupulus) are one of the most valuable raw materials in the global brewing industry as they provide resins and essential oils highly relevant to beer production.
Dias GS, Gallon ME, Gobbo-Neto L.
europepmc +2 more sources
DETERMINATION OF THE COHUMULONE CONTENT OF HOP RESINS [PDF]
Journal of the Institute of Brewing, 1961 A rapid method for the determination of the cohumuione content of hops is described, depending on pyrolysis of the α acids and direct gas chromatography of the products; typical results are given for a number of hop samples of different varieties.
J. Roberts
semanticscholar +2 more sources