الفهرس 
Acknowledgement
Effect of storage on the distribution of Aluminum in Milk and some Milk productsOnly 14 pages are availabe for public view
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Abstract
One hundred random samples of infants powdered milk based formulae and locally packaged milk powder (50 samples for each) were collected from different markets and pharmacies in Assiut Governorate, Egypt during the period from June 2013 to October 2013. These samples were collected in their original containers and packets, and transported to the laboratory for estimation of aluminum level. The digestion procedure of the samples was carried out in the Central Laboratory of Faculty of Veterinary Medicine, Assiut University, and metal analysis carried out in Analytical Chemistry Unit (ACAL), Department of Chemistry, Faculty of Science, Assiut University. All filtrated samples of milk powder and infant formula samples were analyzed for their aluminum concentration by using of HR-CS Atomic Absorption Spectrophotometer (High Resolution Continum Source Atomic Absorption Spectrophotometer).
The obtained results revealed that:
Incidence of Aluminum in infant formula and milk powder
The incidence of aluminum in infant formula samples was 45 (90%) out of 50 examined samples were, while 5 (10%) were below the detectable limit of the device). The minimum level was 0.001 mg/L, the maximum was 0.902 mg/L, and the average value was 0.145 mg/L. The incidence of aluminum in milk powder samples was 48 (96%) out of 50 examined samples contained aluminum, and ranged from 0.002 mg/L to 0.186 mg/L.
Comparison of Aluminum level with MPL in infant formula and milk powder samples
The examined infant formula showed that 4 (8%) out of 50 tested samples were above the MPL, while 46 (92%) were within the value of MPL. The examined milk powder samples were all lower the MPL value.
Comparison of standard Aluminum intakes with that estimated in infant formula and milk powder samples
The EDI value of aluminum for infant formula samples used for 0 - 6 months old age infants according to min, max, and average values were 1.11, 138.9, and 29.64 mg/kg b.w., respectively. For infants > 6 months old age EDI value according min, max, and average values were 0.13, 37.85, and 9.810 mg/kg b.w., respectively.
The EWI value of aluminum for infant formula samples used for 0 - 6 months old age infants according to min, max, and average values were 7.76, 972.5, and 207.4 mg/kg b.w., respectively. For infants > 6 months old age EWI value according min, max, and average values were 0.9,265, and 68.75 mg/kg b.w., respectively.
The EDI of aluminum for milk powder samples used for children and adults according to min, max, and average values were 0.01, 0.75, and 0.317 mg/kg b.w., respectively. The EWI of aluminum for milk powder samples according to min, max, and average values were 0.07, 4.67, and 2.135 mg/kg b.w., respectively.
Experimental part
Estimation of aluminum level in sample of boiled drinking tap water, another one of boiled mineral water, and in two samples of infant drinks prepared from such types of water was carried.
Aluminum level in boiled drinking tap water was 0.114 mg/L, while it was not detected in boiled mineral water. Consequently, aluminum level in infant drinks prepared from aforementioned diluents was 0.176 and 0.105 mg/L for drinking water prepared infant drink and in mineral water prepared infant drink , respectively. It was obvious that aluminum level increased by 54.7 % in infant drinks reconstituted by boiled drinking tap water and remained unchanged in the other prepared by boiled mineral water. Aluminum level increased by 68.14% in drinkig water prepared infant drink than that in mineral water prepared infant drink.
Finally, the public health effect and recommended precautions to avoid the aluminum contamination in infant formula and milk powder have been disscussed in this study.