Pesticide residues in cow's milk

Kvaliteta mlijeka igra ključnu ulogu u širokoj potrošnji, ali i u sudjelovanju u velikom nizu derivata, kao što su jogurt, sir, maslac i sladoled. Utvrđena je učinkovita LC-MS/MS metoda za određivanje 81 različitog ostatka pesticida u uzorcima mlijeka. Analize su obuhvatile 44 uzorka mlijeka prikupljenih tijekom 2019. godine. Od svih pregledanih pesticida u 2,27 % analiziranih uzoraka otkriveni su samo metalaksil (prisutan u 11,36 % uzoraka), bifentrin i metolaklor (9,09 %), dimetoat (4,55 %), prokloraz i tiakloprid. Detekcije trifloksistrobina i bifentrina bile su iznad maksimalnih razina ostataka (MRL). Uredba Evropske komisije (EU) 2017/1135 standardizira MRL za dimetoat i ometoat u određenim proizvodima, ali nije utvrđena MRL za ostatke dimetoata u mlijeku. Svi ostali pesticida bila su ispod granica MRL-a.
Quality of milk plays a key role in its wide consumption but also of its involvement in a large series of derived products, such as yogurt, cheese, butter, and ice cream. An effective LC-MS/MS method has been validated for the determination of 81 different pesticide residues in milk samples. The analyses comprised 44 milk samples collected during 2019. From all inspected pesticides, only metalaxyl (present in 11.36% samples), bifenthrin and metolachlor (9.09%), dimethoate (4.55%), prochloraz and thiacloprid were detected in 2.27% of analysed samples. The detections of trifloxystrobin and bifenthrin were above the maximum residue levels (MRLs). The Commission Regulation (EU) 2017/1135 standardizes the MRLs for dimethoate and omethoate in certain products, but a MRL for dimethoate residues in milk has not been established jet. All the other pesticide detections were below the MRLs.