Continuous production of fermented liquids
AssigneeGroupement d'Interet Economique
InventorsManfred Moll, Gilbert Durand, Henri Blachere
Life of this patent
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Abstract
Production of fermented liquids such as beer is continuously carried out under sterile conditions by flash sterilizing a mixture of wort and bitter substances by direct steam injection, boiling the mixture to complete transformation of bitter substances incorporated in the wort, decanting a precipitate formed in the wort under aeration of the wort by sterile air or oxygen, fermenting the wort by bringing the wort under sterile conditions into contact with yeast immobilized on an inert support, storing the fermented wort in the presence of yeast under sterile conditions and passing the fermented wort under sterile conditions into contact with a protease fixed on a support.
Claims13
A process for the continuous production of a fermented liquid wherein all constituents participating in said production are sterilized prior to being introduced into said process comprising the steps of flash sterilizing a mixture of wort and bitter substances by direct injection of steam into said mixture, boiling said mixture so as to complete the transformation of the bitter substances incorporated in said wort, decanting the precipitates formed in said wort under aeration of said wort by sterile compressed air or oxygen, fermenting said wort by bringing said wort into contact with yeast fed from an external supply in sterile condition, said yeast being fixed on an inert support by physical-chemical bonds, storing the fermented wort in the presence of yeast under sterile conditions and passing said fermented wort through a treatment zone in contact wit sterile protease fixed on a support, all steps of said process being carried out in zones provided with means for avoiding the introduction of foreign microorganism therein so that a permanently sterile medium is provided throughout said process.
A process for the continuous manufacture of a fermented liquid, using a sterile wort comprising the steps of
- flash sterilizing a mixture of concentrated wort and bitter substances by direct injection of steam in a sterilization zone,
- transferring said mixture to a boiler and boiling said mixture to complete the transformation of said bitter substances in said mixture,
- removing said mixture from said boiler,
- injecting sterile air or oxygen into said mixture in order to effect the transfer of said mixture into a separator and to aerate said mixture,
- decanting and removing precipitate formed in said mixture from said separator,
- feeding said mixture thus freed of said precipitate into a fermentation zone into contact with yeast fed from an external supply in sterile condition, said yeast being fixed on an inert support by physical-chemical bonds,
- tranferring the thus-fermented mixture into a storage zone where said mixture is stored in the presence of yeast fixed on an inert support and then
- passing said mixture through a treatment zone into contact with sterile protease fixed on a support, each of said steps being carried out under sterile condition.
Dependencies are inferred from the claim text.