Interlaboratory comparison for determination of ochratoxin A by ELISA in maize (running title: Determination of ochratoxin A in maize)
2013
Jakšić, Sandra M. | Jajić, Igor M. | Nešić, Ksenija D. | Stojanov, Igor M. | Živkov-Baloš, Milica M. | Mihaljev, Željko A. | Abramović, Biljana F.
Participation in interlaboratory comparison and proficiency testing schemes is important for laboratories to control the work quality. In this study, a sample of naturally contaminated maize was analyzed for the content of ochratoxin A (OTA) in three laboratories in Serbia. Participating laboratories used enzymatic immunoaffinity method (ELISA) for the determination of OTA and selection of the ELISA kit was free. Between-laboratory precision was acceptable as evidenced by Cochran’s C test. Moreover, z-scores for all three laboratories were z < ± 2, which is considered acceptable. Used OTA confirmation methods were thin-layer chromatography (TLC) and high-pressure liquid chromatography (HPLC), with fluorescence detector. The results of different methods were comparable. [Projekat Ministarstva nauke Republike Srbije, br. TR 031071 i br. OI 172042]
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