摘要:
The invention relates to a method of producing a bright, yeast fermented beverage, said method comprising the continuous production of wort from mash. More particularly, the present method comprises: a. mashing in a particulate, starch-containing raw material with water and enzymatically hydrolysing the starch to fermentable sugars; b. continuously producing a fermentable wort from the heated mash; c. introducing the wort into a fermenter to ferment the wort with the help of biologically active yeast; d. removing yeast from the fermentate by means of sedimentation; and e. clarifying the low-yeast fermentate to produce a bright, yeast fermented beverage by: processing the low-yeast fermentate in one or more separators to remove suspended material, said one or more separators being selected from the group consist ing of centrifuges and decanter centrifuges; and filt ering the processed fermentate. The efficiency with which the low-yeast fermentate is clarified to a bright beverage can be maintained during a very long period of time (e.g. for several weeks), which is particularly beneficial in case of a continuous brewing operation in which both wort production and yeast fermentation are carried out in a continuous fashion.
摘要:
In the production of potable alcohols, a continuous fermentation stage is employed to pitch and/or initially ferment a wort containing fermentable sugars. An exemplary continuous stage involves the use of a gas lift bioreactor employing superflocculant yeast and stringent oxygen control. The continuous stage can then be followed by sending an at least partially fermented discharge from the continuous process is delivered to a batch processing stage for finishing.
摘要:
The ALDC derivative is produced by treating ALDC in an aqueous medium with glutaraldehyde in defined proportions with optional subsequent immobilization. The ALDC derivative which is used in beer fermentation exhibits a satisfactory stability at low pH.
摘要:
The present invention provides a continuous method for the production of a yeast fermented beverage, comprising the following consecutive continuous processing steps: a. mashing starch-containing and optionally malted raw materials with aqueous liquid; b. heat ing the mash and enzymatically hydrolysing the starch to fermentable sugars; c. removing spent grain from the heated mash to produce a mash extract, d. convert ing the mash extract into wort; e. removing organic volatiles from the hot wort; f. dilut ing the wort with additional water; g. feeding the diluted wort into a propagation vessel in which it is combined with a recirculated stream of yeast-containing residue and in which oxygen is supplied to initiate yeast growth; h. feeding the wort from the propagation vessel into a sequence of one or more fermentation vessels in which the yeast is kept suspended; i. feeding the fermented wort into one or more separators to remove a yeast- containing residue; j. recirculat ing part of the yeast-containing residue to the propagation vessel; and k. feeding the remainder of the fermented wort to subsequent processing steps; wherein the gravity of the mash extract is maintained at more than 22 ºP; the gravity of the wort is maintained at more than 22 ºP until said wort is diluted with additional water; and the gravity of the diluted wort is within the range of 10-35 ºP; and wherein less than 30 wt.% of the fermentable sugars in the mash extract and wort are derived from fermentable sugars added after hydrolysis of the starch contained in the mash. The present method offers the advantage that it is highly efficient in terms of energy consumption and extraction yields. Furthermore, it achieves extremely high productivity, especially in the operation of the brewhouse.
摘要:
The invention relates to a cell immobilising carrier, which can be used in a novel continuous fermentation process. More particularly, this fermentation process is used in the continuous production of beer. The immobilising carrier comprises a porous medium of fibers. The medium has a porosity of at least 70 %.
摘要:
The object of the present invention is to provide a fermentation product excellent in flavoring quality by a method in which the fermentation time can be reduced and the long-term operation is feasible in producing the fermentation product such as alcoholic beverages in the fluidized-bed reactor. The present invention relates to a process for producing a fermentation product wherein an immobilized microorganism is arranged in a fluidized bed reactor provided with a fluidized bed part, a liquid circulating part and a gas exhaust part, and a raw-material solution is fed to the reactor to conduct fermentation, characterized in that a part of a fermented solution is drawn out from the fluidized bed part and the fermented solution is returned again to the reactor whereby a fluidized bed is formed while fermentation is conducted, and the fermentation product is put out from the reactor while new raw-material solution is fed to the reactor so that the above fermentation is repeatedly carried out.
摘要:
The object of the present invention is to provide a fermentation product excellent in flavoring quality by a method in which the fermentation time can be reduced and the long-term operation is feasible in producing the fermentation product such as alcoholic beverages in the fluidized-bed reactor. The present invention relates to a process for producing a fermentation product wherein an immobilized microorganism is arranged in a fluidized bed reactor provided with a fluidized bed part, a liquid circulating part and a gas exhaust part, and a raw-material solution is fed to the reactor to conduct fermentation, characterized in that a part of a fermented solution is drawn out from the fluidized bed part and the fermented solution is returned again to the reactor whereby a fluidized bed is formed while fermentation is conducted, and the fermentation product is put out from the reactor while new raw-material solution is fed to the reactor so that the above fermentation is repeatedly carried out.
摘要:
This invention relates to a method for pasteurisation and fermentation in the production of an alcoholic beverage. The method involves taking a fermentable soluble extract from a processed brewer's mash, mixing it in a mixing zone with a fermented fermentable extract containing an alcohol content of at least 4 % alcohol by volume together with other products formed during fermentation, processing this mixture by heating the mixture to a temperature of at least 51 DEG C (124 DEG F) holding the mixture at that temperature for ten to twenty minutes and then cooling the mixture to a minimum of 10 DEG C (50 DEG F) before fermenting the mixture according to known fermentation processes. In order to produce a continuous flow process and better control the specific gravity of the unfermented fermentable extract, the liquid extract from the brewer's mash may be converted to a soluble powder product which can then be provided in a continuous flow of powder product for dissolving with a continuous flow of water to produce a continuous flow of fermentable soluble extract for mixing with a continuous flow of fermented fermentable extract taken from an outlet of a continous fermenting plant, the mixture being processed as above before entering the continuous fermenting plant for fermentation to produce an alcoholic beverage.
摘要:
One aspect of the invention concerns a method comprising: a. mashing particulate, starch-containing and optionally malted raw materials with water; b. heat ing the mash and enzymatically hydrolysing the starch; c. passing the heat-treated mash across a first sieve for separation into a fermentable mash extract and wet spent grain; d. transferring the wet spent grain, optionally after said wet spent grain has been subjected to a washing and sieving operation, to a first press and pressing said wet spent grain to obtain dewatered spent grain and additional fermentable mash extract. The present method offers the advantages of (i) being very robust, (ii) enabling the production of high gravity mash extracts (iii) consuming very little electricit y and (iv) achieving high extraction yields. The invention also provides an apparatus for carrying out the aforementioned method.
摘要:
In the production of potable alcohols, a continuous fermentation stage is employed to pitch and/or initially ferment a wort containing fermentable sugars. An exemplary continuous stage involves the use of a gas lift bioreactor employing superflocculant yeast and stringent oxygen control. The continuous stage can then be followed by sending an at least partially fermented discharge from the continuous process to a batch processing stage for finishing.