摘要:
A hybrid continuous fermentation system and related process for fermenting sugars to produce alcohol containing liquors. The system includes a fermentor arranged with a packed bed region and a fluidized bed region. A yeast bed is retained in the packed bed region using a retention matrix and flocculation. A sugar supply is directed through the yeast bed with sufficient dwell time for satisfactory sugar conversion. The fluidized bed region is arranged to allow fermented product to pass through the fermentor while allowing yeast cell growth and retention. A nutrient may be added to the fermentor to aid in yeast flocculation. The fermentor is sized and shaped to allow sufficient dwell time of the sugar supply in the packed bed region and in the fluidized bed region to maximize sugar conversion to ethanol by fermentation.
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:
This invention relates to apparatus for fermenting liquid particularly on a domestic scale, the apparatus comprising a first and a second chamber, the said first chamber having a support for yeast, a closable inlet for charging said first chamber with liquid to be fermented and a gas outlet to which is attached a valve the first said chamber being connected in series with the second said chamber for liquid flow, the second said chamber having a closable outlet for liquid and a gas outlet to which is attached a valve.
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 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%.