Process for the production of hulupones

Details Process for the production of hulupones Process for the production of hulupones

1975-09-03

1976-08-31

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

426248, 426600, B01J 110

Patent

active

039779530

ABSTRACT:
Lupulones, which form a constituent of hop resins which have hitherto been separated and discarded because of their poor solubility, are converted into a hulupone-containing beer-soluble bitter-tasting product by photo-sensitized oxidation in a liquid alkaline medium. However, the oxidation, which is effected by means of oxygen or an oxygen-containing gas in the presence of one or more sensitizing dyes and under the action of visible light, is only partial; it is discontinued when the oxygen consumption resulting from the reaction exhibits a substantial decline, or when the fall in pH occurring during the reaction substantially ceases.

REFERENCES:
patent: 1945067 (1934-01-01), Nozicka
patent: 2652333 (1953-09-01), Nilsson
patent: 3839588 (1974-10-01), Sweett et al.

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