FIELD: biotechnology. SUBSTANCE: invention describes microbiological method of preparing 5-hydroxypyrazine carboxylic acid and/or their salts from pyrazine carboxylic acid and its salts as substrate using microorganisms grown with nicotinic acid and/or their salts as a single carbon source. The following bacteria were used: Pseudomonas acidovorans, Achromobacter xylosoxydans. Biotransformation process is carried out at pH = 4-10 and 10-60 C. EFFECT: improved method of preparing. 6 cl, 2 tbl
Authors
Dates
1997-10-27—Published
1992-06-19—Filed