Food or edible material: processes – compositions – and products – Products per se – or processes of preparing or treating... – Hop derived ingredient – including hopping of wort
Patent
1980-05-19
1982-08-17
Yudkoff, Norman
Food or edible material: processes, compositions, and products
Products per se, or processes of preparing or treating...
Hop derived ingredient, including hopping of wort
426655, 426489, 426431, C12C 300
Patent
active
043449786
ABSTRACT:
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.degree. C. and subsequently at a higher temperature in the range -5.degree. C. to 31.degree. C.
REFERENCES:
patent: 3717472 (1973-02-01), Strobel
patent: 3911145 (1975-10-01), Marion
patent: 4104409 (1978-08-01), Vitzthun
patent: 4123559 (1978-10-01), Vitzthun
patent: 4158708 (1979-06-01), Chiovini
patent: 4218491 (1980-08-01), Laws
Perry's Handbook, McGraw Hill 1963, 14-42, 43.
Grimmett Christopher M.
Laws Derek R. J.
Sharpe Frederick R.
The Brewing Research Foundation
Yudkoff Norman
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