Yeast stage tank incorporated fermentation system and method
AssigneeLee Tech LLC
InventorChie Ying Lee
Life of this patent
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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.
Claims13
A method of converting a continuous fermentation system to a batch fermentation system comprising:
- a. supplying a first yeast solution to a yeast stage tank from each of multiple yeast tanks in an alternating manner, wherein the first yeast solution has a yeast content less than 5 g weight per liter;
- and
- b. providing a second yeast solution from the yeast stage tank to a first fermenter tank, wherein the second yeast solution has a yeast cell count>250*10{circumflex over ( )}6/ml.
Dependencies are inferred from the claim text.