Back to results
US 3,933,590 AGranted
Method of continuously culturing yeast
AssigneeSanyo-Kokusaku Pulp Co., Ltd.
InventorsTakeshi Oguma, Shunji Shiba, Nobuo Moritani, Yoichi Takeuchi
Life of this patent
Estimating the term…
Abstract
Yeast is continuously cultured in a vapor condensate by adding a neutralizing agent and nutritive agents to the vapor condensate produced from the evaporation of spent sulfite liquor; inoculating said vapor condensate with Candida, Pichia or Hansenula yeast; continuously culturing said yeast in said inoculated vapor condensate; and continuously supplying unsterilized vapor condensate to control the sulfurous acid concentration and the pH of said inoculated vapor condensate.
Claims3
A method of continuously culturing yeast in a vapor condensate, comprising:
- adding a neutralizing agent and nutritive agents to the vapor condensate produced from the evaporation of spent sulfite liquor;
- inoculating said vapor condensate with a sulfurous acid resistant strain of Candida, Pichia or Hansenula yeast;
- continuously culturing said yeast in said inoculated vapor condensate at a pH of 4.5 to 5.5;
- and
- continuously supplying unsterilized vapor condensate to control the sulfurous acid concentration and the pH of said inoculated vapor condensate, wherein the concentration of sulfurous acid in said vapor condensate is from 0.02 to 0.20%.
2 more elements
Dependencies are inferred from the claim text.