Kvasny Prum. 1996; 42(10): 310-314 | DOI: 10.18832/kp1996024

Actual properties of hop ethanol extracts compared to CO2-extracts.Peer-reviewed article

M. BIENDL

The paper summarises basic data relevant to ethanol hop extracts and CO₂-extracts preparation and their properties. A special attention is being given to new products with respect to ethanol extracts production since 1989. A mutual comparison of hops, pellets (90 and PUC - types), ethanol and CO₂-extracts is presented with respect to their summary resin, α-acids, ß-fraction contents and their mutual proportion, all concerning Hallertauer Northern Brewer, Hallertauer Perle and Hallertauer Hersbmcker Spät species, harvest year 1995. The highest α-acids to ß-fraction ratio was found at CO₂-extracts: the remaining compared preparations posessed a 0,1-0,2 lower ratio. From the presented work can be concluded that the ethanol process application during the new age extracts preparation is not linked with any disadvantages in comparison to carbon dioxide extraction.
(In Czech, English summary only)

Keywords: hops, CO2 extract, ethanol extract, bitter substances, hop oils

Published: October 1, 1996