PREPARATION OF HOP EXTRACTS RICH IN PARTICULAR CONSTITUENTS

PREPARATION OF HOP EXTRACTS RICH IN PARTICULAR CONSTITUENTS

PREPARATION OF HOP EXTRACTS RICH IN PARTICULAR CONSTITUENTS Hop extract containing a high proportion of a desired constituent, hop oil, .alpha.-acids or .beta.-acids, is formed by extracting hops with pressurized fluid carbon dioxide, collecting separate fractions of the extract obtained at differen...

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Bibliographische Detailangaben
Hauptverfasser: LAWS, DEREK R.J, GRIMMETT, CHRISTOPHER M, SHARPE, FREDERICK R
Format: Patent
Sprache:eng ; fre
Schlagworte:
BEER
BIOCHEMISTRY
BREWING OF BEER
CHEMISTRY
ENZYMOLOGY
METALLURGY
MICROBIOLOGY
MUTATION OR GENETIC ENGINEERING
SPIRITS
VINEGAR
WINE
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Zusammenfassung:PREPARATION OF HOP EXTRACTS RICH IN PARTICULAR CONSTITUENTS Hop extract containing a high proportion of a desired constituent, hop oil, .alpha.-acids or .beta.-acids, is formed by extracting hops with pressurized fluid carbon dioxide, collecting separate fractions of the extract obtained at different times, and selecting the fraction having a high proportion of the desired constituent. Fractions containing a) at least 70% of the available hop oil at at least 10% concentration, and b) at least 25% of the available .alpha.-acids at at least 55% concentration, may be obtained in a single process by extracting initially at a lower temperature in the range 0.degree.C to 57 C and subsequently at a higher temperature in the range -5.degree.C to 31.degree.C.