Hou Y.L.,Chongqing University |
Hou Y.L.,Chongqin Institute of Veterinary Drug and Feed Inspection |
Zhou J.,Chinese Academy of Agricultural Sciences |
Li Y.P.,Chongqin Institute of Veterinary Drug and Feed Inspection |
And 3 more authors.
Journal of AOAC International | Year: 2015
An accurate method was developed for determining ochratoxin A (OTA) in pig kidney using an immunoaffinity column for cleanup and ultra-HPLC/MS/MS for identification and quantification. Mean recoveries of OTA from kidney samples fortified at 0.10-5 μg/kg levels ranged from 74 to 92%, with RSDs of 4.6-7.5%. The LOD was estimated to be 0.03 μg/kg and the LOQ was 0.10 μg/kg based on an S/N in kidney of 3:1 and 10:1, respectively. The developed method was used for the determination of OTA in pig kidney. A survey of the OTA content of pig kidneys slaughtered in Chongqing, China, revealed that 35 out of 40 analyzed samples were contaminated; the OTA concentration in kidney ranged from trace level (0.03-0.1) to 0.323 μg/kg. This method was shown to be useful for accurately evaluating the intake of OTA from pig kidneys.