Ajinomoto Co., Ltd.

Tadao Kobayashi

Shigeru Yamanaka

Takashi Utagawa

Shin-Ichiro Otsuka

Akio Yamanoi

The production of a 1-.beta.-D-ribofuranosyl-1,2,4-triazole of the formula ##STR1## wherein R is hydroxy, amino, or alkoxy, is carried out by reacting a 1,2,4 triazole of formula ##STR2## wherein R is hydroxy, amino, or alkoxy group, with a greater than equimolar amount of a ribofuranosyl group donor in the presence of a nucleoside phosphorylase preparation at a temperature in the range from 40.degree. to 65.degree. C. for more than 10 minutes, and recovering a 1-.beta.-D-ribofuranosyl-1,2,4-triazole from the reaction solution. The temperature is preferably from 55.degree. to 65.degree. C. and the time is preferably 10 minutes to 20 hours. An elevated temperature higher than the usual enzyme reaction temperature isused to prevent undesirable enzymatic reactions.

Production of 1-.beta.-D-ribofuranosyl-1,2,4-triazole

Certain yeasts are capable of growing in a culture medium containing soybean whey as the main carbon source. The yeast cells have a high protein content, and they are suitable for feed food, and so on.

Growing community of inventors

Saga, Japan

Tadao Kobayashi