Method for producing beer

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 65/06 (2006.01) C12C 13/00 (2006.01) C12H 1/07 (2006.01) G01N 27/60 (2006.01)

Patent

CA 2286267

The present invention provides a method for producing beer comprising filtering beer through a porous membrane until such time that the porous membrane is in need of cleaning, contacting the porous membrane with an enzyme selected from the group consisting of cellulases, amylases, and combinations thereof, particularly a cellulase having a crystalline: soluble cellulose activity ratio at 60 minutes of at least about 0.1, to clean the porous membrane, and then reusing the porous membrane to continue filtering beer. The present invention further provides a method for producing beer comprising filtering beer through a porous membrane that progressively clogs during filtration, monitoring the streaming or zeta potential of the porous membrane as a measure of the extent of clogging of the porous membrane, halting filtration of the beer through the porous membrane before the porous membrane becomes fully clogged as determined by the streaming or zeta potential of the porous membrane, cleaning the porous membrane, and then reusing the porous membrane to continue filtering beer.

Cette invention a trait à un procédé de production de bière consistant à filtrer ladite bière au moyen d'une membrane poreuse et ce jusqu'au moment où il faut nettoyer la membrane, à mettre cette membrane en contact, aux fins de nettoyage, avec une enzyme choisie dans le groupe constitué par des cellulases, des amylases et leurs combinaisons, notamment une cellulase dont le rapport des activités, activité de la cellulose cristalline/activité de la cellulose soluble, est d'au moins 0,1 environ à 60 minutes, puis à réutiliser cette membrane poreuse afin de poursuivre la filtration de la bière. L'invention concerne, en outre, un procédé de production de bière consistant à filtrer ladite bière au moyen d'une membrane poreuse se colmatant progressivement durant le processus de filtration, à surveiller l'écoulement ou le potentiel zêta de la membrane, cette évaluation permettant de mesurer l'évolution du colmatage, à interrompre le processus de filtration de la bière avant que la membrane ne soit complètement colmatée, comme déterminé par l'évaluation de l'écoulement ou du potentiel zêta de la membrane, à nettoyer la membrane et enfin à la réutiliser afin de poursuivre la filtration.

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