Yeast stage tank incorporated fermentation system and method
AssigneeLee Tech LLC
InventorChie Ying Lee
Life of this patent
Estimating the term…
Abstract
Methods of and system for growing and maintaining an optimized/ideal active yeast solution in the yeast tank and fermenter tank during the fermentation filling cycle are provided. A new yeast stage tank is used between the yeast tank and the fermenter tank allowing yeast to rapidly produce a huge amount of active young yeast cells for a fermenter during the filling period. A measurable and useful controlling factor, % DT/% Yeast by weight ratio (or “food” to yeast ratio), is used (e.g., % DT=glucose), which offers information on the health status of the yeast. The controlling factor is used to control the status of the yeast throughout the entire process.
Claims15
A fermentation process with a propagated active yeast solution comprising:
- a. transferring a first yeast solution having a yeast content less than 5 g weight per liter from a yeast tank to a first fermenter tank, wherein the first fermenter tank serves as a yeast stage tank for performing a yeast propagating process;
- b. propagating the first yeast solution in the first fermenter tank to a propagated active yeast solution and maintaining a maximized yeast cell count in the first fermenter tank greater than 250*10{circumflex over ( )}6 cells/nil;
- c. continuously transferring the propagated active yeast solution from the first fermenter tank to more than one fermenter tanks;
- and
- d. filling up the first fermenter tank, so that the first fermenter tank contains a first filled active yeast solution.
Dependencies are inferred from the claim text.