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South Asian Journal of Life Sciences

Research Article
S. Asian J. Life Sci. 6(1): 14-21
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Amina Arif1 , Bushra Khan2 , Khizra Majeed2 , Muhammad Saqib Shahzad1, Muhammad Shahid Nadeem3, Rafique Ahmed4

1Faculty of Life Sciences, University of Central Punjab 1-Khayaban-E-Jinnah Road, Johar Town, Lahore 54000 Pakistan; 2Lahore College for Women University, Lahore 54000 Pakistan; 3Department of Biochemistry, Faculty of Science, Building No. A-90, King Abdulaziz University Jeddah 21589, Saudi Arabia; 4Govt. Kot Khawaja Saeed Teaching Hospital, Lahore, Pakistan.

Abstract | The present study describes the concentrations of contaminating trace metals like iron, copper, zinc, cobalt, nickel and magnesium; toxic metals including cadmium and lead, micro nutrients including sodium and potassium among 27 different infant milk and baby foods. The samples were analyzed by atomic absorption spectrometer prior to acid digestion. The levels of elements in analyzed samples were found to be under legal limits. Nickel concentration was found to be higher in some infant food that ranged 0.008-0.09 mg/g and in infant cereals ranged 0.005-0.01mg/g. The range of investigated metals zinc, iron, copper, cadmium, lead, sodium, potassium and magnesium, was 0.0005-0.12 mg/g, 0.002-0.13 mg/g, 0.0005-0.45 mg/g, 0.001-0.04 mg/g, 0.001-0.21 mg/g and 0.01-1-2.82 mg/g, 0.03-9.9 mg/g, and 0.01-0.046 mg/g in infant foods and cereals. The estimated intake of these metals were within recommended tolerable levels of these elements. Protein content was determined by Lowry’s method that ranged 0.02-2.1 mg/ g. Moreover, infant formulas were analyzed for the bacterial load (probiotics) and it was found that most of the products analyzed in this study contained a sufficient amount of probiotic bacteria in them. Our data can guide the parents and physicians in the selection of baby foods in Pakistan.

Keywords | Atomic absorption spectroscopy, Flame photometry, Infant formulae, Baby food, Heavy metals