Ion-exclusion chromatography determination of organic acid in uridine 5'-monophosphate fermentation broth.
Simultaneous determination of organic acids using ion-exclusion liquid chromatography and ultraviolet detection is described. The chromatographic conditions are optimized when an Aminex HPX-87H column (300 × 7.8 mm) is employed, with a solution of 3 mmol/L sulfuric acid as eluent, a flow rate of 0.4 mL/min and a column temperature of 60°C. Eight organic acids (including orotic acid, α-ketoglutaric acid, citric acid, pyruvic acid, malic acid, succinic acid, lactic acid and acetic acid) and one nucleotide are successfully quantified. The calibration curves for these analytes are linear, with correlation coefficients exceeding 0.999. The average recovery of organic acids is in the range of 97.6% ∼ 103.1%, and the relative standard deviation is in the range of 0.037% ∼ 0.38%. The method is subsequently applied to obtain organic acid profiles of uridine 5'-monophosphate culture broth fermented from orotic acid by Saccharomyces cerevisiae. These data demonstrate the quantitative accuracy for nucleotide fermentation mixtures, and suggest that the method may also be applicable to other biological samples.
State Key Laboratory of Materials-Oriented Chemical Engineering, College of Life Science and Pharmaceutical Engineering, Nanjing University of Technology, Nanjing 210009, People's Republic of China.
Huanqing
H
Niu
Yong
Y
Chen
Jingjing
J
Xie
Xiaochun
X
Chen
Jianxin
J
Bai
Jinglan
J
Wu
Dong
D
Liu
Hanjie
H
Ying
D002264:Carboxylic Acids / Q000032:analysis* / Q000302:isolation & purification / Q000378:metabolism; D002852:Chromatography, Ion Exchange / Q000379:methods*; D003470:Culture Media / Q000737:chemistry* / Q000378:metabolism; D005285:Fermentation; D057230:Limit of Detection; D009963:Orotic Acid / Q000378:metabolism; D015203:Reproducibility of Results; D012441:Saccharomyces cerevisiae / Q000737:chemistry / Q000378:metabolism; D013464:Sulfuric Acids / Q000737:chemistry; D013696:Temperature; D014542:Uridine Monophosphate / Q000032:analysis* / Q000378:metabolism
D002264:Carboxylic Acids; D003470:Culture Media; D013464:Sulfuric Acids; D009963:Orotic Acid; D014542:Uridine Monophosphate; C033158:sulfuric acid