Beer yeast cell bodies containing high ribonucleic acid content and their production method

Abstract

By using a medium containing an ingredient for activating brewer's yeast, a brewer's yeast cell body is immersed in the medium in the presence of an added inorganic salt; and the immersion is stirred at a predetermined temperature to concurrently carry out an aerobic activation treatment, resulting in the formation of a brewer's yeast cell body containing a high ribonucleic acid content comprising 10% by weight or more of ribonucleic acid based on the weight of the cell body.

1 . A brewer's yeast cell body containing a high ribonucleic acid content comprising 10% by weight or more of ribonucleic acid based on the weight of the cell body.  
   
   
       2 - 7 . (canceled)  
   
   
       8 . A brewer's yeast cell body produced by a method comprising: 
 using a medium containing an ingredient for activating the brewer's yeast;    immersing the brewer's yeast cell body in the medium in the presence of an added inorganic salt; and    stirring the immersion at a predetermined temperature to concurrently carry out an aerobic activation treatment;    wherein said brewer's yeast cell body contains a high ribonucleic acid content comprising 10% by weight or more of ribonucleic acid based on the weight of the cell body.    
   
   
       9 . The brewer's yeast cell body according to  claim 8 , wherein the inorganic salt is an inorganic salt of a metal selected from an alkali metal, an alkaline earth metal or a transition metal.  
   
   
       10 . The brewer's yeast cell body according to  claim 9 , wherein the inorganic salt is sodium chloride.  
   
   
       11 . The brewer's yeast cell body according to  claim 8 , wherein the step of adding an inorganic salt to the immersion is carried out prior to the start of the aerobic activation treatment.  
   
   
       12 . The brewer's yeast cell body according to  claim 8 , wherein the step of adding an inorganic salt to the immersion is carried out after the lapse of a predetermined period from the start of the aerobic activation treatment.  
   
   
       13 . The brewer's yeast cell body according to  claim 8 , wherein the predetermined temperature is in the range of from 10 to 30° C.