Spatial Monitoring of Pyrethroid Residues by RP-HPLC in Raw Bovine Milk in West Delta Region of Egypt

The massive implementation of pesticides in agronomy, public health series, manufacturing, and production can increase pesticides in the environment leading to tremendous effects on human health. Hence, the current study aimed to evaluate the concentration and frequency of pyrethroid residues in raw bovine milk sourced from local producers at West Delta of Egypt carefully chosen from three cities on High-Performance Liquid Chromatography system. A total of 200 of raw bovine milk samples (Alexandria 75, El- Behera 75, and Matrouh 50) were analyzed. The achieved results indicated that Cypermethrin, Cyhalothrin, and Deltamethrin residues were respectively screened at frequencies of 18.66%, 17.33%, and 14.66% in Alexandria, 21.33%, 17.33%, and 16% in El- Behera, and 44%, 28%, and 24 % in Matrouh. Cypermethrin was detected in a mean concentration level of 6.63, 5.98, and 10.74 in Alexandria, El- Behera, and Matrouh, respectively. However, Cyhalothrin and Deltamethrin had lower mean values of 4.66 and 2.45 in Alexandria, 5.14 and 3.05 in El- Behera, and finally 2.84 and 2.69 in Matrouh. There was no α- Cypermethrin in all the investigated samples while Cypermethrin was present with the highest mean concentration and frequency levels in Matrouh, compared to other cities. Concerning the compatibility of examined samples with maximum residue levels (MRLs) set by the European Commission and Codex regulation, indicated only 2.66%, 1.33%, and 0.00 % for Cyhalothrin, and 1.33%, 4%, and 2% for Deltamethrin examined samples in Alexandria, El- Behera, and Matrouh cities exceeded MRLs, respectively. As for Cypermethrin, its concentrations did not exceed MRLs. These results indicated a significant amount of these chemical pollutants in raw bovine milk offered by local producers in the West Delta of Egypt, which can threaten human life. Accordingly, continual assessment of pyrethroid residues in milk is of utmost importance to guarantee Egyptian consumers’ health.