A Rapid Method with UPLC for the Determination of Fusaric Acid inFusariumStrains and Commercial Food and Feed Products.
A rapid, sensitive and validated method for the determination of fusaric acid (FA) in severalFusariumstrains and different commercial food and feed products is reported based on ultra-performance liquid chromatography. This method requires only crude sample by a simple extraction with methanol, and requires a very short time of 8 min for completion. Separation of FA was performed at injection volume of 1 μl with a 20:80 (v/v) water/acetonitrile mobile phase containing 0.1 % formic acid at a flow rate of 0.05 ml/min and detected with UV at 220 nm. Nice linearity and good correlation coefficient (R2> 0.99) were obtained in the concentration range of 1-200 μg/ml. Validation was demonstrated using blank samples spiked at three different concentrations with standard solution, and the method yielded more than 98.2 % recovery efficiencies and below 2.56 % R.S.D. when applied in the analysis of FA produced byFusarium verticillioidesand a set of transgenic strains of this fungus. Satisfactory recoveries in the range of 79.1-105.8 % and R.S.D lower than 10 % were also obtained for the tested commercial food and feed products. The concentration FA detection in the transgenic strains ranged from 9.65 to 135 μg/kg (0.29-4.05 μg per gram of biomass). However, FA was not detected in most of the commercial products with the exception of niblet, oatmeal, red kidney bean and soybean, for which the concentrations of FA ranged from 2.5 to 18 μg/kg (below the permitted maximum). These results show that the proposed method has a great potential application to analyze FA from different sources rapidly.
College of Life Sciences, Fujian Normal University, 350117 Fuzhou, China.
Zhihong
Z
Chen
College of Life Sciences, Fujian Normal University, 350117 Fuzhou, China.
Qingqing
Q
Luo
College of Life Sciences, Fujian Normal University, 350117 Fuzhou, China.|Engineering Research Center of Industrial Microbiology of Ministry of Education, Fujian Normal University, 350117 Fuzhou, China.|Center of Fujian Modern Fermentation Technology and Engineering, 350117 Fuzhou, China.
Mingzi
M
Wang
College of Life Sciences, Fujian Normal University, 350117 Fuzhou, China.|Engineering Research Center of Industrial Microbiology of Ministry of Education, Fujian Normal University, 350117 Fuzhou, China.|Center of Fujian Modern Fermentation Technology and Engineering, 350117 Fuzhou, China.
Bilian
B
Chen
Food and feed products; Fusaric acid (FA); Fusarium; Mycotoxin; UPLC