摘要:
A method of producing beer having a tailored flavour profile is provided comprising the successive steps of: (a) fermenting wort containing fermentable sugars with yeast to produce beer containing 1-10 vol. % ethanol and flavour substances diacetyl; acetaldehyde; dimethyl sulfide; ethyl acetate; isoamyl acetate; ethyl valerate; ethyl hexanoate; iso-amyl alcohol and 2-methylbutan-1-ol; (b) contacting the fermenting wort or beer with porous adsorbent particles, selectively adsorbing the beer flavour esters ethyl acetate, ethyl hexanoate, ethyl valerate and isoamyl acetate; (c) separating the adsorbent particles; (d) desorbing a portion of the beer flavour esters from the adsorbent particles; and (e) adding a fraction of the desorbed beer flavour esters to the flavour adjusted beer or to another beer, wherein the amount of beer flavour esters added is 5-95 wt. % of the amount of beer flavour esters removed by the adsorbent particles.
摘要:
In a clarification method for a beverage liquid, in particular for producing beer, the beverage liquid, after it passes through a fermentation stage, is subjected to a clarification which serves for removing active haze components from the beverage liquid, and fed to a maturation vessel in which the beverage liquid is stored for a maturation time. In a further method step, the beverage liquid is charged with at least one pectin-containing clarification agent for increasing a filtration performance. In this case it is provided that the pectin-containing clarification agent is introduced into the beverage liquid on the path from the fermentation stage to the maturation vessel and the pectin present therein, before the feed to the maturation vessel, is at least for the most part removed again from the beverage liquid.
摘要:
Caffeine-adsorbing materials, caffeine-adsorbing systems, and decaffeination system suitable for removing caffeine from a solution; methods for removing caffeine from a solution; and methods of making the caffeine-adsorbing materials are described.
摘要:
A method for treating a fluid is provided using a particulate material in the form of a deposited layer having an upstream side and a downstream side wherein a flow of the fluid is directed through the deposited layer from the upstream to the downstream side at a first temperature. The method includes reconditioning the deposited layer and then resuming treatment of the fluid, wherein reconditioning comprises heating the deposited layer to a second temperature; and cooling the deposited layer to a third temperature at an average cooling rate in the range of up to about 20° C./min.
摘要:
A method of preparing a yeast fermented beverage is disclosed, comprising: (a) fermenting wort with yeast to produce a fermented liquid; (b) optionally removing the yeast; (c) mixing the fermented liquid with polyvinylpolypyrrolidone (PVPP) particles; (d) filtering the fermented liquid over a first membrane filter without employing a filter aid; (e) combining a first retentate with an aqueous regeneration liquid to desorb polyphenols and/or protein from the PVPP particles, wherein the aqueous regeneration liquid has a pH of at least 10.0; (f) filtering the combination retentate and regeneration liquid over a second membrane filter without employing a filter aid; and (g) after, optional further refining the regenerated PVPP particles from the second retentate, and recirculating the particles to step (c); wherein macromolecular components contained in the first retentate and/or retained on the second filter are degraded using a degradative agent selected from oxidants, enzymes and combinations thereof.
摘要:
A method of preparing a yeast fermented beverage is provided, which method comprises (a) fermenting wort with a biologically active yeast to produce a fermented liquid; (b) combining the fermented liquid with polyvinylpolypyrrolidone (PVPP) particles to bind at least a fraction of the polyphenols and/or proteins contained in the fermented liquid; (c) removing a slurry containing the PVPP particles and yeast from the fermented liquid; (d) separating said slurry into a yeast-enriched fraction and a PVPP-enriched fraction a technique selected from flotation separation, settling separation and separation using a hydrocyclone; (e) regenerating the PVPP particles before, during and/or after the separation by desorbing polyphenols and/or protein from said PVPP-particles; and (f) recirculating the regenerated PVPP particles to step (b). The method can be operated with single use PVPP as well as regenerable PVPP and does not require sophisticated filter hardware for regenerating the PVPP.
摘要:
The present disclosure relates to agents and methods for reducing calcium in beverages, in particular alcoholic and fermented beverages such as wine, beer, lager, ale, cider and perry. The agent comprises a pectin in a powder form or a salt thereof.
摘要:
The present invention corresponds to a method for the removal of unwanted phenolic compounds from foodstuffs, more particularly beverages. The method comprising contacting a selected polymer with the foodstuff. In a particular embodiment, the polymers are selected among polyaniline (PANI), polyaniline emeraldine base (PANI-EB) and polyaniline emeraldine salt (PANI-ES) polymers, or the polymers are selected among polyamidoamine (PAMAM) dendrimers functionalized with polyaniline (PANI), polyaniline emeraldine base (PANI-EB) and polyaniline emeraldine salt (PANI-ES) polymers.