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.
Claims11
A method comprising:
- a. receiving a yeast solution from a yeast tank, wherein the yeast solution has a yeast content less than 5 g weight per liter;
- b. propagating the yeast solution to a propagated active yeast solution;
- and
- c. transferring the propagated active yeast solution to a first fermenter tank, wherein the propagated active yeast solution has a yeast cell count >250*10{circumflex over ( )}6 cells/ml.
A method of providing a yeast solution in a fermenting process comprising:
- a. propagating a yeast solution in a yeast stage tank, wherein the yeast solution has a yeast content less than 5 g weight per liter;
- and
- b. transferring the yeast solution propagated to a first fermenter, wherein the yeast solution is propagated until the yeast solution has a yeast cell count >250*10{circumflex over ( )}6 cells/ml before transferring the yeast solution to the first fermenter.
Dependencies are inferred from the claim text.