| abstract |
(57) [Summary] [Object] To provide a method for producing a yeast extract containing a large amount of 5'-nucleotide without using yeast cells having almost no yeast odor and particularly having a high RNA content. . [Constitution] Treatment with acidic aqueous solution (pH 2-5, 30-90 At 10 ° C. for 10 to 60 minutes). After extracting NA and extract, 5′-phosphodiesterase and, if necessary, deaminase were allowed to act, -A 5'-nucleotide-rich yeast extract containing 10% or more of each of -guanylic acid, 5'-adenylic acid or 5'-inosinic acid, 5'-cytidylic acid, and 5'-uridylic acid is obtained. |