Determination of Penicillium roqueforti toxin by reversed-phase high-performance liquid chromatography.
A method for the detection and quantification of Penicillium roqueforti toxin (PRT) using reversed-phase high-performance liquid chromatography has been established. The limit of quantitation of this method was 3 ng of PRT, while the limit of detection was 2 ng of toxin. The precision of the analysis based on numerous runs was good. Retention times for PRT were highly reproducible with an average coefficient of variation of about 1.6%. Analysis of PRT in liquid and solid samples showed no interference of the sample matrix. The accuracy of the method was 98.6%, with mean PRT recoveries of 96.8%, and 100.4% for the spiked culture medium and blue cheese extracts, respectively.
Siemens
K
K
Manitoba Research Council, University of Manitoba, Food Science Department, Winnipeg, Canada.
Zawistowski
J
J
D002611:Cheese / Q000032:analysis; D002851:Chromatography, High Pressure Liquid / Q000379:methods* / Q000706:statistics & numerical data; D009284:Naphthols / Q000032:analysis*
D009284:Naphthols; C015483:PR Toxin