Study on the method performances for screening and confirmatory analysis of aflatoxin M1 in raw milk according to the mycotoxin regulative requirements

Authors

  • Elizabeta Dimitrieska-Stojkovik Faculty for Veterinary Medicine, Food Institute Ss. Cyril and Methodius University Skopje, Republic of Macedonia
  • Gordana Ilievska Faculty for Veterinary Medicine, Food Institute Ss. Cyril and Methodius University Skopje, Republic of Macedonia
  • Biljana Stojanovska-Dimzoska Faculty for Veterinary Medicine, Food Institute Ss. Cyril and Methodius University Skopje, Republic of Macedonia
  • Risto Uzunov Faculty for Veterinary Medicine, Food Institute Ss. Cyril and Methodius University Skopje, Republic of Macedonia
  • Zehra Hajrulai-Musliu Faculty for Veterinary Medicine, Food Institute Ss. Cyril and Methodius University Skopje, Republic of Macedonia

DOI:

https://doi.org/10.20450/mjcce.2014.486

Keywords:

Aflatoxin M1, raw milk, Immunoenzimatic assay, HPLC-FD, 657/2002/EC,

Abstract

Screening and confirmatory methods for Aflatoxin M1 (AFM1) analysis were optimized and studied regarding the European Decision 2002/657/EC requirements. The recoveries of AFM1 from the spiked samples at levels between 0.025 and 0.075 µg kg-1 were 99.6-110.3 % with obtained precision 10.5-13.4 %, confirming the immunochemical method precision and reliability for intensive surveillance studies. According to the regulatory requirements, for confirmation of the obtained positives from the screening, the reference high-performance liquid chromatographic method was evaluated in reference to the performance criteria. The obtained between-day recovery was in the range 67.2-72.8 %, and the precision range 5.4-9.1 %. 205 positives from the screening were subjected to confirmatory analysis. The comparison of the data obtained from the immunoassay and chromatographic method (R2=0.764) revealed a slight overestimation of the screening method, but no cases of false-negative determinations occurred.

Author Biography

Elizabeta Dimitrieska-Stojkovik, Faculty for Veterinary Medicine, Food Institute Ss. Cyril and Methodius University Skopje, Republic of Macedonia

Head of the laboratory for rezidues and contaminants

 

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Published

2014-12-01

How to Cite

Dimitrieska-Stojkovik, E., Ilievska, G., Stojanovska-Dimzoska, B., Uzunov, R., & Hajrulai-Musliu, Z. (2014). Study on the method performances for screening and confirmatory analysis of aflatoxin M1 in raw milk according to the mycotoxin regulative requirements. Macedonian Journal of Chemistry and Chemical Engineering, 33(2), 217–226. https://doi.org/10.20450/mjcce.2014.486

Issue

Vol. 33 No. 2 (2014)

Section

Food Chemistry

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