Determination of Itaconic Acid in Culture Broth by High Performance Liquid Chromatography
高效液相色谱法测定发酵醪液中的衣康酸

An HPLC method for the determination of itaconic acid and other components in the culture broth of Aspergillus terreus was developed. The operating conditions were Aminex HPX-87H column (300 mm x 7.8 mm) at 30 degrees C, mobile phase of sulfuric acid (4 mmol/L) and refractive index detector at 30 degrees C. The linear relationship of calibration curve was good in the range of 0-50 g/L for itaconic acid (r = 0.9997). The detection limit was 5.7 micrograms, and the relative standard deviation was 1.37% (n = 7). Other components in the culture broth were SO(4)2-, sucrose, glucose and fructose. The method is simple, sensitive, rapid and accurate.