Abstract:
Pesticides occupy one of the most dangerous chemicals worldwide. Most pesticides
which are highly resistance to microbial (organochlorines and organophosphorusare
degradation). During their lipophilicity and persistence, these petiscides and its
residues are concentrated in the adipose tissues and also in the serum of the animal
blood; leading to bio-concentration, bio-magnification and environmental perisitence
through the food chain. Upon reaching to human, it results in many symptoms and can
lead to severe diseases. Furthermore, pesticides have the ability to cause three specific
types of hurtful effects;acute, chronic or delayed, and allergic effects. Acute result in
tingling sensations, lack of coordination and diffuculty of breathing, chronic result in
impaired memory and concentration, disorientation and severe depression, and finally,
allegeric results in systemic effects ,such as; asthma, skin irritation, such as; blisters,
eye and nose irritation, such as; itchy, sneezing and water eye. On the other hand,
milk represent one of the most signficatnt foods used in the worldwide. According to
the food chain, various types of pesticides are exisiting in commercial milk. This
projects aim is to determine the pestcides residues in unprocessed milk by using
QuEChERS method on 30 samples colleced from diffrenet locations in Old cairo,
Cairo, Egypt. The results shows that majority of samples are -ve to pesticides,
however; the minoroty are +ve to pesticides. Therefore; it's recommended to use
pasteurized milk (especially skimmed or 0% fats; because as illustrated before;
pesticides are concentrated in milk fats) rather than unprocessed milk/ commercial
milk. According to this study, the results confirm that many of pesticides ingredients
are unstable as a result of milk processing during pasteurization process UHT (ultra-
high temperature and pressure). Finally, this confirms the correct of this opinion
