摘要:
The present invention relates to a method of producing yeast fermented beverages, which method comprises the following consecutive continuous processing steps: a. introducing wort into a series of one or more propagation vessels in which it is combined with a recirculated stream of yeast-containing residue and in which the yeast is allowed to propagate under aerobic conditions while being kept suspended; b. transferring the yeast-containing wort from the propagation vessel into a series of one or more fermentation vessels in which the yeast is kept suspended under anaerobic conditions and is allowed to metabolize carbohydrates present in the wort; c. transferring at least a part of the fermented wort from the series of one or more fermentation vessels to one or more separators to remove a yeast-containing residue; d. recirculating part of the yeast-containing residue to the series of one or more propagation vessels; and e. feeding the remainder of the fermented wort to subsequent processing steps; wherein the wet yeast content of the wort in the series of one or more fermentation vessels is maintained at more than 100 g/l. The utilization of very high yeast concentrations offers the advantage that fermentation times and/or fermenter volume can be reduced substantially. Furthermore, continuous fermentations conducted at high yeast concentrations are less vulnerable to microbial infections.
摘要:
The present invention relates to a continuous method of fermenting wort, said method comprising: -fermenting wort with a biologically active yeast to produce an alcohol containing fermented liquid; -introducing the fermented liquid containing at least 10 g/l of biologically active yeast into a maturation vessel; -separately removing yeast containing sediment and supernatant liquid from the vessel; and -optionally recirculating at least a part of the yeast containing sediment to the wort fermentation; wherein the residence time of the fermented liquid in the maturation vessel exceeds 6 hours. The present method offers the advantage that it combines maturation and yeast separation into one processing step, whereas conventional continuous processes require at least two separate processing steps, one for yeast separation and one for maturation. Secondly, the present method is very robust as the relatively high residence time that is needed for maturation ensures that effective sedimentation is achieved under virtually all conditions.
摘要:
The present invention relates to a method of producing yeast fermented beverages, which method comprises the following consecutive continuous processing steps: a. introducing wort into a series of one or more propagation vessels in which it is combined with a recirculated stream of yeast-containing residue and in which the yeast is allowed to propagate under aerobic conditions whilst being kept suspended; b. transferring the yeast-containing wort from the propagation vessel into a series of one or more fermentation vessels in which the yeast is kept suspended under anaerobic conditions and is allowed to metabolise carbohydrates present in the wort; c. transferring at least a part of the fermented wort from the series of one or more fermentation vessels to one or more separators to remove a yeast-containing residue; d. recirculating part of the yeast-containing residue to the series of one or more propagation vessels; and e. feeding the remainder of the fermented wort to subsequent processing steps; wherein the wet yeast content of the wort in the series of one or more fermentation vessels is maintained at more than 100 g/l. The utilisation of very high yeast concentrations offers the advantage that fermentation times and/or fermenter volume can be reduced substantially. Furthermore, continuous fermentations conducted at high yeast concentrations are less vulnerable to microbial infections.
摘要:
The present invention relates to a continuous method of fermenting wort, said method comprising: —fermenting wort with a biologically active yeast to produce an alcohol containing fermented liquid; —introducing the fermented liquid containing at least 10 g/l of biologically active yeast into a maturation vessel; —separately removing yeast containing sediment and supernatant liquid from the vessel; and —optionally recirculating at least a part of the yeast containing sediment to the wort fermentation; wherein the residence time of the fermented liquid in the maturation vessel exceeds 6 hours. The present method offers the advantage that it combines maturation and yeast separation into one processing step, whereas conventional continuous processes require at least two separate processing steps, one for yeast separation and one for maturation. Secondly, the present method is very robust as the relatively high residence time that is needed for maturation ensures that effective sedimentation is achieved under virtually all conditions.
摘要:
The invention provides a continuous method for the production of a yeast fermented beverage, comprising consecutive continuous processing steps; wherein the gravity of a mash extract is maintained at more than 22° P; the gravity of the wort produced from the mash extract is maintained at more than 22° P until said wort is diluted with additional water; and the gravity of the diluted wort is within the range of 10-35° P; 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 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:
One aspect of the present invention relates to a method of producing a mash extract, said method comprising: a. mashing particulate, starch-containing and optionally malted raw materials with a recirculated aqueous stream; b. heating the mash and enzymatically hydrolysing the starch; c. transferring the heat-treated mash into a first separator for separation into mash extract and spent grain; d. transferring the spent grain into a first mixing vessel and mixing it with sparging water; e. transferring the mixture of spent grain and sparging water into a second separator to remove spent grain; f. recirculating an aqueous stream from the second separator to the mashing step, wherein the gravity of the fermentable mash extract obtained from the first separator is maintained at above 15° P. The present method offers the advantage that it is highly efficient in terms of energy consumption and extraction yields. Furthermore, the present method achieves extremely high productivity in the operation of the brewhouse.The invention also provides an apparatus for carrying out the aforementioned method.
摘要:
One aspect of the present invention relates to a method of producing a mash extract, said method comprising: a. mashing particulate, starch-containing and optionally malted raw materials with a recirculated aqueous stream; b. heating the mash and enzymatically hydrolysing the starch; c. transferring the heat-treated mash into a first separator for separation into mash extract and spent grain; d. transferring the spent grain into a first mixing vessel and mixing it with sparging water; e. transferring the mixture of spent grain and sparging water into a second separator to remove spent grain; f. recirculating an aqueous stream from the second separator to the mashing step, wherein the gravity of the fermentable mash extract obtained from the first separator is maintained at above 15° P. The present method offers the advantage that it is highly efficient in terms of energy consumption and extraction yields. Furthermore, the present method achieves extremely high productivity in the operation of the brewhouse.The invention also provides an apparatus for carrying out the aforementioned method.